Спутник ФКИ. COROT. [Редактировать]

COROT (англ. COnvection ROtation and planetary Transits) — космический телескоп, созданный усилиями Национального центра космических исследований Франции (CNES), при участии Европейского Космического Агентства, а также научно-исследовательских центров Австрии, Испании, Германии, Бельгии и Бразилии. Основной задачей телескопа является поиск экзопланет, в том числе и планет земного типа. Другой задачей телескопа является изучение внутреннего строения звезд.
Спутник изготовлен на базе платформы Proteus, впервые опробованной в составе КА Jason-1. На орбиту COROT вывела модернизированная ракета-носитель «Союз 2-1Б» с разгонным блоком «Фрегат». Аппарат был запущен с космодрома Байконур 27 декабря 2006 года в 17:23 по московскому времени.
Полезная нагрузка:

  • Телескоп: Афокальный телескоп состоит из двух параболических зеркал с фокусным расстоянием 1,1 м (диаметр входного зрачка 27 см)
  • Широкоугольная камера. Датчики: четыре ПЗС-матрицы с разрешением 2048x4096. Объектив: фокусирует свет (фокусное расстояние 1200 мм) и корректирует геометрические аберрации телескопа
  • Бортовой компьютер

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1COnvection ROtation and planetary TransitНайтиНайти
229678НайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - Европа
2Страна производитель - Франция
3Тип оператора(владельца) - государственный
4Тип орбиты - НОО

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг630

Характеристики орбиты

#ХарактеристикаЗначение
1Наклонение, град90.0
2Апогей, км903.6
3Перигей, км608.6
4Период, минут99.8
5Длинный диаметр эллипса, км7127

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2006-063A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Оператор Космическое агентство Франции
2Оператор Европейское космическое агентство

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Байконур
2Дата пуска2006-12-27 at 14:23:00 UTC
3Полезная нагрузка 1xCOROT
4Ракета-носитель 1xСоюз-2.1б

Найдено 635 документов по запросу «COROT». [Перейти к поиску]


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0.48/5
... giant HR 7349 measured by CoRoT F. Carrier1 , J. De Ridder1 , F. Baudin2 , C. Barban3... over 5 months obtained with the CoRoT satellite. Mode parameters were estimated... using high-accuracy spectrographs. The CoRoT (COnvection ROtation and planetary Transits... number of stars simultaneously. The CoRoT satellite continuously collects white-light... as 3-color photometry for The CoRoT space mission has been developed... in the exofield data of CoRoT, which is an important breakthrough... the red giants observed by CoRoT. HR 7349 (HD 181907) is... first long run of the CoRoT mission. In this paper, we thus report on photometric CoRoT observations of HR 7349 resulting... are presented in Sect. 2, the CoRoT data and frequency analysis in... of L = 69 ± 6 L . Fig. 1. The total CoRoT light curve (top) and a zoom... expected. 3. CoRoT observations HR 7349 was observed with the CoRoT satellite for 5 consecutive months. CoRoT was launched on... data acquired with CoRoT were reduced by the CoRoT team. A detailed description... al. (2008). In the seismofield, CoRoT obtains one measurement every 32... mainly to the passage of CoRoT across the South Atlantic Page... computed the power spectra of CoRoT light curves with both gaps... giant HR 7349 measured by CoRoT Fig. 3. Power density spectrum of.... Fig. 4. Power spectrum of the CoRoT observations of HR 7349. Only... giant HR 7349 measured by CoRoT Fig. 7. Top: Lorentzian fit (thick... al. (2009), who derived the CoRoT response for radial modes, radial... about 156 days by the CoRoT satellite. These observations have yielded... HR 7349 measured by CoRoT contract C90309: CoRoT Data Exploitation, and from..., A. 2006, ESA SP-1306, The CoRoT mission, ed. M. Fridlund, A. Baglin, J. Lochard...



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0.11/5
... Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3 Space missions 19 3.1 COROT on its way . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.2 Planetary... of the clusters.” 3 Space missions 3.1 COROT on its way Source: ESA... Kazakhstan, the unique astronomy mission COROT is on its way. Its... stellar interiors as never before. COROT is a French national space agency... adding a particularly strong international flavour. COROT was launched by a SoyuzFregat from... CNES at: [20] What is COROT? COROT stands for ’Convection Rotation and... achieve its twin scientific objectives, COROT will monitor some 120 000... by COROT and analysis of the scientific data to COROT will lead... ESA’s ground-based observatories. The COROT space telescope technical centre ESTEC... planets. Many of the planets COROT will detect are expected to... also be given access to COROT data. those detected are expected... Earth (or smaller, even). If COROT Status reports on the mission... it is looking at a star, COROT will also be able to... and chemical composition. COROT’s European dimension The COROT mission was first proposed... Figure 15: Artist impression of COROT. Image credit: ESA stimulate greater....cnes.fr/corot en/ [21] http://www.cnes.fr/corot en/ [22...



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0.45/5
... rights reserved. Printed in the U.S.A. CoRoT-7b: SUPER-EARTH OR SUPER...; published 2010 January 11 ABSTRACT CoRoT-7b, a planet about 70% larger... which received less insolation. Moreover, CoRoT-7b could be tidally heated... extreme volcanism. In this case, CoRoT-7b is a “super-Io” that... value could be driven by CoRoT-7c if its own eccentricity is larger than ∼10−4 . CoRoT-7b may be the first... to be revealed by the CoRoT and Kepler spacecraft. Key words... mechanics – planets and satellites: individual (CoRoT-7b) the surface. Here, we... decay. If the orbit of CoRoT-7b is sufficiently eccentric, then... that do not (a superEarth). If CoRoT-7b orbited in isolation, then... tidal heating, and suggest that CoRoT-7b could be the first... discovered by CoRoT and Kepler. 1. INTRODUCTION The discovery of CoRoT-7b (L´eger.... 2007; Seager et al. 2007). CoRoT-7b is clearly not habitable... vapor atmosphere (Schaefer & Fegley 2009). CoRoT-7b may be such a world... distance from the star. However, CoRoT-7b is so close to... of Q∗ is unexpectedly large. Alternatively, CoRoT-7b could be on the... range of surface temperatures of CoRoT-7b (LRS09; Schaefer & Fegley 2009... of the star (5275 K for CoRoT-7). We assumed A = 0 and g = 1 (no albedo.... The radiogenic heat flux of CoRoT-7b is of order 0.4 W m−2 (A. L´eger... (if such a layer exists) of CoRoT-7b probably cannot respond to...://janus.astro.umd.edu/HNBody/ CoRoT-7b: SUPER-EARTH OR SUPER... present day) 2.5 Figure 1. History of CoRoT-7b’s semimajor axis (top) and... Q∗ = 105 . Figure 2. Tidal heating of CoRoT-7b as a function of its... to determine which cases predict CoRoT-7b is a super-Io and... of the physical properties of CoRoT-7b. Consideration of tidal migration... surface and interior properties of CoRoT-7b (and close-in terrestrial... of the surface properties of CoRoT-7b (L´eger et al. 2009... eccentricity in the orbit of CoRoT-7b can result in enough... an external agent. Perturbations from CoRoT-7c are a likely mechanism to... eccentricity. Depending on CoRoT-7c’s mass and orbit, CoRoT-7b could be... of the current eccentricity of CoRoT-7b, most models of planet... orbit. We have assumed that CoRoT-7b has been a terrestrial-like... atmosphere, surface and interior of CoRoT-7b. This planet is the... terrestrial planet discovered, but the CoRoT and Kepler spacecrafts are likely... less than 10 days. Like CoRoT-7b, these planets can be...



Дата загрузки: 2016-12-24
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... the age and distance of CoRoT-2. Furthermore, our UVES data confirm... a late-type stellar companion to CoRoT-2a that is gravitationally bound... of high-energy radiation. Surprisingly, CoRoT-2a’s likely coeval stellar companion... for CoRoT-2b’s slightly eccentric orbit. Key words. stars: individual: CoRoT-2a...-type – X-rays: stars 1. Introduction The CoRoT-2 system stands out of the... of CoRoT-2a provided by the CoRoT telescope span 152 days. CoRoT-2a.... ID 10989). brightness distribution of CoRoT-2a: Lanza et al. (2009... eclipses of CoRoT-2b were observed in the optical with CoRoT (Alonso... a stratospheric thermal-inversion layer in CoRoT-2b caused by the strong...) and determined precise estimates of CoRoT-2a’s spectral properties such as... system, if not caused by CoRoT-2a’s potential stellar companion. Guillot... (2011) investigated the matter of CoRoT-2a’s anomalously inflated planet on... cover a full planetary transit of CoRoT-2b including a reasonable time span... and yielded a highresolution spectrum of CoRoT-2a with a signal-to-noise... high-resolution UVES spectrum of CoRoT-2a, we measured equivalent widths... parameters and iron abundance of CoRoT-2a determined from the analysis... (Sect. 2.5) Table 2. Elemental abundances for CoRoT-2a relative to the Sun... a value of T eff = 5513 ± 111 K for CoRoT-2a’s effective temperature, using 322... and the surface (e.g., Pinsonneault 1994). CoRoT-2a shows a strong Li line...,b,c, 1999), additionally, the location of CoRoT-2a is marked in the... et al. (2003) together with CoRoT-2a’s apparent magnitude corrected for... obtain a distance estimate for the CoRoT-2 system. Pace et al. find....4 ± 2.1 4020 Wavelength [Å] Fig. 2. Region of CoRoT-2a’s spectrum containing the Ca... A&A 532, A3 (2011) Normalized Flux 1 0.8 0.6 0.4 CoRoT−2A LTE model Residuals 0.2 0 8490... s−1 . 2.9. Evidence for a gravitationally bound companion CoRoT-2a has a close neighbor, 2MASS... 7088 7090 7092 7094 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 E 04 CoRoT-2a 02 01:23:00... 23.9 ± 0.4 km s−1 , a value close to CoRoT-2a’s radial velocity of 23... pc the projected distance between CoRoT-2a and the companion amounts... CoRoT-2a for energies above 0.3 keV. The nominal 2MASS positions of CoRoT... that 2MASS J19270636+0122577 and CoRoT-2a are gravitationally bound and... the Chandra X-ray data 3.1. Observations CoRoT-2a was observed by Chandra...] 2 Table 5. Spectral-fit results for CoRoT-2a derived from Chandra ACISS... erg s−1 ] 0 3 Fig. 8. ACIS-S spectrum of CoRoT-2a with applied spectral model... investigate the X-ray variability of CoRoT-2a, we constructed background-subtracted... 8 of 12 To check whether CoRoT-2a’s potentially physical companion, 2MASS... companion of CoRoT-2a. Insights from X-rays and optical spectroscopy 4.1. CoRoT-2a’s atmosphere and activity We studied the photosphere of CoRoT-2a... the photometry observed by the CoRoT observatory. The light curve shows... by enhanced chromospheric heating. Indeed, CoRoT-2a shows strong chromospheric emissionline... index, which again demonstrates that CoRoT-2a is a highly active star... with a temperature of 1 keV. Combining CoRoT-2a’s X-ray luminosity of 1.9 × 1029... covers no more than 4% of CoRoT-2a’s rotation period and a virtually... a representative picture of CoRoT-2a’s corona. 4.2. The age of CoRoT-2 One of... if (B − V) > 0.6, which is true for CoRoT-2a, owing to the sparseness... properties of the CoRoT-2 system: first, a solution in which CoRoT-2a is... 300 Ma for CoRoT-2a. This suggests that CoRoT-2a is a young... et al. 2000). 4.3. Distance to CoRoT-2a Photometric colors are often... excess of E(B − V) = 0.15 mag. Thus, CoRoT-2a appears redder than expected.... According to our spectroscopic analysis, CoRoT-2a can be classified as... likely value. 4.4. X-rays eroding CoRoT-2b Because CoRoT-2b orbits its host... CoRoT-2a’s X-ray luminosity, the X-ray flux at the distance of CoRoT... the distance of CoRoT-2b. Substituting the parameters for CoRoT-2b (Alonso... remains a coarse estimate, but places CoRoT-2b clearly above the erosion... assumptions for the extent of CoRoT-2b’s atmosphere (Sanz-Forcada et... the CoRoT-2 system may extend far beyond the planetary orbit. CoRoT-2a..., forming a wide binary pair with CoRoT-2a. We obtained and analyzed....9 ± 0.4 km s−1 , which is close to CoRoT-2a’s radial velocity. By modeling... gravitationally bound to CoRoT-2a. This would make CoRoT-2 one of about... challenge our understanding of the CoRoT-2 system, in particular, the age... than CoRoT-2a. From our spectral analysis, we concluded that CoRoT-2a...fficiently inactive, while the G-star CoRoT-2a remained more active, maybe... influences the dynamics of the CoRoT-2 system. In particular, it slightly... the latter scenario. 5. Conclusion The CoRoT-2 system may be a key to... potentially physical stellar companion of CoRoT-2a, remains doubtful. The apparent... challenge our picture of the CoRoT-2 system. Either the companion is... observed anomalously large radius of CoRoT-2b. Acknowledgements. This work has... Alonso, R., Aigrain, S., Pont, F., Mazeh, T., & The CoRoT Exoplanet Science Team 2009, in...



Дата загрузки: 2016-12-24
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0.25/5
.... corot-8b August 3, 2010 Transiting exoplanets from the CoRoT space mission XI. CoRoT... CoRoT-8b as measured by CoRoT and the radial velocity curve of CoRoT-8 as measured by the HARPS spectrometer . Results. We find that CoRoT... – techniques: radial veloc- ities 1. Introduction CoRoT (Convection, Rotation and planetary Transits....C-0388 and 083.C-0186). The CoRoT space mission, launched on December.... to ground-based transit surveys, CoRoT offers uninterrupted photometric time series... the discovery and characterization of CoRoT-8b, a hot and dense small... star. We start by describing CoRoT LC analysis and transit parameter... a discussion about CoRoT-8b’s possible composition. 2. CoRoT-8 photometric observations CoRoT performs photometric measurements... large in order to accomodate CoRoT defocused point-spread functions (PSFs... from the CoRoT space mission Table 1. Coordinates and magnitudes of CoRoT-8 and its six main contaminants. Star CoRoT-8 Cont. #1 Cont.... Thus, for a subset of stars, CoRoT delivers three LCs instead of... candidates for this field, including CoRoT-8, which is referred to as... stands for chromatic). The standard CoRoT pipeline (version 2.1 at this date... target star mask. Exodat, the CoRoT entry database (Deleuil et al... available (1.6 % in the case of CoRoT-8) but is computed with a generic... 1), then integrated their fluxes inside CoRoT-8’s mask and submasks. Figure 1 displays... Fig. 1 that ignores everything but CoRoT-8’s and contaminants. This calculation yields... are corrected using these values. CoRoT-8’s 142.1-day long LCs consist... observation showing CoRoT-8 and its environment. The mask chosen for CoRoT-8 (solid... (dashed white line) centered on CoRoT-8. X and Y are positions on CCD... WFC at the 2.5-m INT showing CoRoT-8 and its environment (seeing is... to increasing angular distances from CoRoT-8. basis of this first section... al. 2008) that continuously scrutinizes CoRoT LCs during a run, detected a transit... al.: Transiting exoplanets from the CoRoT space mission δ = (6.51 ± 0.07) × 10.... 3. Computed analog of Fig. 1 showing CoRoT-8’s mask and its 6 closest contaminants... stellar activity, in contrast to CoRoT-7, for instance, where quasi-periodic... discuss the star properties. 4. CoRoT-8 stellar parameters CoRoT-8 was observed with the....: Transiting exoplanets from the CoRoT space mission Fig. 4. CoRoT-8’s normalized light curves..., and white LCs, respectively. Fig. 5. CoRoT-8b’s best transit model for... as for the previous CoRoT planets since CoRoT-3b. The analysis was... al.: Transiting exoplanets from the CoRoT space mission Table 2. Abundances of... theoretical estimates computed for the CoRoT bandpasses by Sing (2010): u1... We performed RV observations of CoRoT-8 with the SOPHIE spectrograph (Perruchot.... 6. Period-folded radial velocities of CoRoT-8. The black dots and open.... (2009a). In the case of CoRoT-8, radial velocities were derived by... the ephemerides computed from the CoRoT-8 light curve, they did not... binary not angularly separated from CoRoT-8 by the 3.6-m ESO telescope). Therefore... phase with ephemerides derived from CoRoT transits, in agreement with what... al.: Transiting exoplanets from the CoRoT space mission ation of the... 2) a background eclipsing binary blended with CoRoT-8. In the first case, it... measured by CoRoT. In the second case, the velocity of CoRoT-8 and... signal is a planetary companion to CoRoT-8. CoRoT-8b’s mass (in MJ ) can.... Table 3. Radial velocity measurements on CoRoT-8 obtained by HARPS and SOPHIE... al.: Transiting exoplanets from the CoRoT space mission Table 4. Comparison of... its photometry in three colors, CoRoT makes it possible in principle... here to study CoRoT-8b’s transit in the CoRoT colors. As a start... not be accurate enough for CoRoT-8. Nevertheless, if we attempt to... about 7 mmag, a transiting planet like CoRoT-8b is almost impossible to... by a ground-based photometric survey. CoRoT-7b (0.3 mmag, L´eger et al... exception of CoRoT-10 (V = 15.2, Bonomo et al., in preparation), CoRoT-8 (V = 14... harboring a planet found by the CoRoT survey. It is also relatively... CoRoT space mission Table 5. Star and planet characteristics of the CoRoT-8 system. CoRoT-ID 0101086161 CoRoT-WinID LRc01-E2... tail of giant gaseous planets. CoRoT-8b has a density of 1.6 g cm... estimation we can conclude that CoRoT-8b has only slightly evolved... diagram for transiting planets including CoRoT-8b. The two dashed lines... two major constraints used are CoRoT-8’s stellar density and effective temperature.... For a metal-rich star like CoRoT-8b, this favors slightly younger... al.: Transiting exoplanets from the CoRoT space mission (TLS and the...), compared to constraints inferred from CoRoT photometry, spectroscopy, radial velocimetry, and... Ciencia e Innovaci´on. The German CoRoT Team References Auvergne, M., Bodin, P., Boisnard..., 853 Bouchy, F., Moutou, C., Queloz, D., & the CoRoT Exoplanet Science Team. 2009b, in... al.: Transiting exoplanets from the CoRoT space mission 1 2 3 4 5 6 7 8 9 10 11 12...



Дата загрузки: 2017-04-23
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0.29/5
..., published by EDP Sciences, 2011 CoRoT’s first seven planets: An overview... , J. Schneider2 , H. Lammer3 , P. Barge4 , G. Wuchterl5 and CoRoT team 1 Institute for Astronomy, Türkenschanzstrasse... the exoplanet channel of the CoRoT space telescope – gave a new perspective... rotating and active, spotted stars. CoRoT-3 populated the brown dwarf desert... and very low mass stars. CoRoT extended the known range of... by transits to 9 days. Two CoRoT planets have host stars with.... Finally the properties of the CoRoT-7b prove that terrestrial planets... of the secondary transit of CoRoT-1 at the 10−5 level and... of the 1.7 Earth radii of CoRoT-7b at 3.5 10−4 relative flux are promising evidence of CoRoT being able to detect even... planets. 1. INTRODUCTION The space mission CoRoT is a joint adventure of different... the name of the mission CoRoT both research tasks are mentioned... respectively an overview of the CoRoT mission were published by Barge... obtained with measurements of the CoRoT mission were published in a whole... year (Baglin et al. [6]). ∗ The CoRoT space mission has been developed... McDonald observatory 2. COROT-1B: THE FIRST PLANET DISCOVERED BY COROT Already the first exoplanet discovered by CoRoT measurements was... nature of the signal (Fig. 3). 3. COROT-2B: A TRANSITING PLANET AROUND AN... 150 days of observations of CoRoT-2b (Alonso et al. [2]) (Fig.... This second confirmed planet of CoRoT orbits a K0V 1 In the text... transits of CoRoT-1b ([5] Fig. 1). Figure 2. RV measurements of CoRoT-1b with... eclipse of CoRoT-1b ([3], Fig. 5). Figure 4. Normalized flux of CoRoT-2b using... curve of 78 transits of CoRoT-2b ([2], Fig. 2). even fainter stars... with telescopes of the 2 m class. 4. COROT-3B: THE FIRST SECURE INHABITANT... 6. Phase-folded RV measurements of CoRoT-2b derived by SOPHIE and.... 1). Figure 7. Light curve of CoRoT-3b ([8], Fig. 2). 5. COROT-4B: A TRANSITING PLANET IN... Conferences Figure 8. Light curve of CoRoT-3b for 152 days ([8], Fig... with CoRoT-3b in the brown dwarf desert ([8], Fig. 10). 6. COROT-5B... very low metallicity (ratio [M/H] = −0.25). 7. COROT-6B: A TRANSITING HOT JUPITER PLANET... STAR This planet discovered by CoRoT turned out to be in... of CoRoT-3b ([8], Fig. 4). Figure 11. Folded light curve for CoRoT-4b.... 16) are taken from of [9]. 8. COROT-7B: THE FIRST SUPER-EARTH... The most exciting result of CoRoT up to now is the... 0.03 (Léger et al. [11]). CoRoT-7b turned out to be... Figure 12. RV measurements of CoRoT-4b with HARPS and SOPHIE.... Phase-folded light curve of CoRoT-5b ([16], Fig. 6). M = 4.8 MEarth ) 4 . The... of the smallest period of CoRoT-7b found for a planet around... the Rossiter-Laughlin effect of CoRoT-5b during the transit ([16.... Phase-folded light curve of CoRoT-6b ([9], Fig. 4). at least somewhat...’ planet. With these measurements for CoRoT-7b it has been proven.... 9. THE MASS LOSS OF THE COROT PLANETS DUE TO PROXIMITY TO... Figure 16. RV measurements of CoRoT-6b with SOPHIE ([9], Fig. 8). Figure.... Superposition of 153 transits of CoRoT-7b ([11], Fig. 17). the... to the exoplanets discovered by CoRoT integrated over the life time..., one can see that CoRoT-1b and CoRoT-5b lost during their... mass loss of CoRoT-2b, CoRoT-3b, CoRoT-4b and CoRoT-6b are lower... loss effect for CoRoT1b and CoRoT-5b are related to the... time scales to investigate whether CoRoT-7b could be a remnant of... of these authors indicate that CoRoT-7b cannot be a remnant of... like gas giant. A scenario that CoRoT-7b is a remnant of an...). Figure 19. A physical model of CoRoT-7b ([18]). excluded. Such an... simulations one can conclude that CoRoT-7b was most likely never... envelope. The efficiency of the CoRoT exoplanet mass loss is connected... stars. star CoRoT-1 type G0V CoRoT-2 K0V CoRoT-3 F3V CoRoT-4 F0V CoRoT-5 F9V CoRoT-6 F5V CoRoT-7 G9V... from space with the satellite CoRoT turned out to have very... in the flux like for CoRoT-7b. But to get absolute... attested. The planets found by CoRoT are of extraordinary value for... see that most of the CoRoT planets are giant gas planets... up ≤ 1.49. The largest ones (CoRoT-1b and 4b) are also... radiation on the radius evolution. CoRoT-4 and CoRoT-6 host planets which have... CoRoT planets is within a wide range, namely from the very massive CoRoT-3b planet (with 21.6 MJ up ) to the telluric planet CoRoT... discovery of close-in planets (CoRoT-7b and 7c). This can... Period [d] a [AU] inc [deg] ecc CoRoT-1b 1.508956 ±6e − 6 1.742996 ±2e... ±0.1 85.9 ±0.8 90.0 0 CoRoT-2b CoRoT-3b CoRoT-4b CoRoT-5b CoRoT-6b CoRoT-7b CoRoT-7c +0.00026.... planet CoRoT-1b CoRoT-2b CoRoT-3b CoRoT-4b CoRoT-5b CoRoT-6b CoRoT-7b CoRoT-7c [g cm... respectively ASA for funding the CoRoT project. The IAC team acknowledges... Barge, P., Baglin, A., Auvergne, M. and the CoRoT team, in Sun, Y.-S. et al...



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... exoplanets from the CoRoT space mission (Research Note) XXI. CoRoT-19b: a low... masses and radii. Aims. The CoRoT space mission allows us to... high photometric accuracy. By combining CoRoT data with high-precision radial.... We report the discovery of CoRoT-19b, a gas-giant planet transiting... of the planet by combining CoRoT photometry with high-resolution spectroscopy... that the host star of CoRoT-19b is an inactive F9V... for Jupiter. Conclusions. The exoplanet CoRoT-19b is an example of... very low density are The CoRoT space mission, launched on December... we present the discovery of CoRoT-19b, a planet with the mass.... 2. The CoRoT light-curves CoRoT-19 was continuously observed with the CoRoT satellite.... 2. Light-curve of CoRoT-19 obtained by CoRoT in white-light together...). Table 1. CoRoT-19, coordinates, and brightness magnitudes. CoRoT window ID CoRoT ID RA... transit produced by the standard CoRoT pipeline (version 2.1), after combining the... 6 Table 2. Transit times. Instrument used CoRoT CoRoT CoRoT CoRoT CoRoT CoRoT CoRoT TRAPPIST Euler Mid-transit time... Since the photometric mask of CoRoT has a size of 30 × 16... the transits are caused by CoRoT-19 and not by an... transit were E. W. Guenther et al.: CoRoT-19b. XXI. (RN) Table 3. Radial... two stars within the mask, CoRoT-19, and a star that is... 0.79 ± 0.02%. After confirming that CoRoT-19 was the object experiencing... was important because CoRoT-19b was observed by CoRoT for only 24...-based telescopes confirms again that CoRoT-19 has a transiting planet orbiting... period and phase measured by CoRoT. The transit-times are given... high-resolution echelle spectra of CoRoT-19 to determine its mass... We took 19 spectra of CoRoT-19 with the HARPS spectrograph..., we obtained 33 spectra of CoRoT-19 of which 12 were... determine the photospheric parameters of CoRoT-19, we constructed a master spectrum... tracks published E. W. Guenther et al.: CoRoT-19b. XXI. (RN) Table 5. Parameters... the planets and brown dwarfs. CoRoT-19b is marked with a thick..., all other objects discovered by CoRoT are indicated by the tick... McLaughlin effect The spectroscopic transit CoRoT-19 was observed with HARPS... point are those discovered by CoRoT, the objects with small points... CoRoT-planets above CoRoT-19b are CoRoT-1b (Barge et al. 2008) and CoRoT... lower than CoRoT-19b, which has 0.71 ± 0.06 g cm−1 . Thus, CoRoT-19b...



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... from the CoRoT space mission XVII. The hot Jupiter CoRoT-17b: a very... Jupiter-type exoplanet, CoRoT-17b, detected by the CoRoT satellite. It has... density is 2.82 ± 0.38 g/cm3 . CoRoT-17b is in a circular orbit... caused by either gravitational The CoRoT space mission, launched on December... the star and the planet. CoRoT (Convection, Rotation and planetary Transit... of another hot Jupiter, named CoRoT-17b. It orbits a faint star... 10.7 ± 1.0 Gyr. 2. CoRoT observations and their analysis 2.1. Data CoRoT-17 is located... find more details about the CoRoT observational strategy in Baglin et... 1. IDs, coordinates, and magnitudes of CoRoT-17. LRc03_E2_2182 311519570 2MASS18344782-0636440... was uniformly 512 seconds for CoRoT-17b because of the faintness... observations were reduced by the CoRoT pipeline. The jumps, caused by... transit events were observed by CoRoT with an orbital period of... 2 of 8 Fig. 1. Sky area around CoRoT-17 (star in the centre... telescope. Right: image taken by CoRoT at the same scale and... aperture mask; indicated are also CoRoT’s x and y image coordinates and positions... 1.04 1.03 Flux (normalized) CoRoT window ID CoRoT ID 2MASS UCAC3 USNO... 5020 Fig. 2. Light curve of CoRoT-17 after removing the most... (k), impact Sz. Csizmadia et al.: CoRoT-17b. XVII. Table 2. Physical and... of the CoRoT-17 system. Fig. 3. Light curve solution of CoRoT-17... of the large PSF of CoRot (Fig. 1). Bordé et al. (2010... to determine this factor for CoRoT-targets. Applying the same method... ± 0.03 and u+ = 0.68 ± 0.03 for CoRoT-17. (The uncertainties of the... to equally acceptable solutions. For CoRoT-3b, for instance, the light... errors are relatively large. Because CoRoT-17 is relatively faint, the...) Fig. 4. Parameter-correlation diagrams for CoRoT-17. Table 3. Telescopes used to... the transit events observed by CoRoT and the log of observations... follow-up programme of CoRoT candidates, observations of CoRoT-17 were undertaken...-events observed by CoRoT really arise from the CoRoT target star and... stars that are contaminating the CoRoT-aperture (Fig. 1). These stars would...-observations Sz. Csizmadia et al.: CoRoT-17b. XVII. that were undertaken... to the expected one from CoRoT. The absence of a signal from... that the signal observed by CoRoT really arose from the target... velocity measurements and orbit of CoRoT-17b HARPS is used to establish the planetary nature of CoRoT candidates and to identify binaries...). For radial velocity measurements of CoRoT-17, we used only HARPS... a V 15.5 as CoRoT-17. Between May and August, 2010, CoRoT-17 has... (Fig. 5). When phased at the CoRoT period and transit ephemeris, a sinusoidal... 4. HARPS radial-velocity measurements of CoRoT-17. BJD-24 500 000... Fig. 5. Radial-velocity variations of CoRoT-17 obtained with HARPS as... involving a transiting planetary companion of CoRoT-17 is the only explanation... data of CoRoT-17 folded to the ephemeris derived from CoRoT transits... programme in support of the CoRoT mission, CoRoT-17 was also observed... practice already adopted in previous CoRoT discovery papers (e.g., Deleuil et al... the fundamental physical parameters of CoRoT-17, i.e., effective temperature (T eff ), surface gravity... procedure we applied in earlier CoRoT planet-detection publications (see e.g. Deleuil... of the bisector span of CoRoT-17 RV data as a function... image cut-outs centred around CoRoT-17, as retrieved from the... al.: CoRoT-17b. XVII. Fig. 8. Spectral energy distribution of CoRoT-17. Dereddened... temperature, radius, and metallicity as CoRoT-17 are plotted with a light... projected towards the direction of CoRoT-17. The presence of foreground... the faint star CoRoT-17, detected by the CoRoT satellite. Extensive radial... has 0.44% depth, but the CoRoT light curve is contaminated by... systems among the transiting exoplanets. CoRoT-17b is located in a quite... probe the possible composition of CoRoT-17b, we computed stellar and... evolution of the size of CoRoT-17b is plotted as a function.... 9. Evolution of the size of CoRoT-17b (radius in Jupiter units...), compared to constraints inferred from CoRoT photometry, spectroscopy, radial velocimetry, and... sensitive for the properties of CoRoT-17b, because – depending on the..., see Bakos et al. 2010), CoRoT-17 has an age that... predict that a star similar to CoRoT-17 reaches its present radius..., France, on behalf of the CoRoT/Exoplanet program. This publication makes... Systems grant NNX09AB30G. The German CoRoT Team (TLS and the University..., A66 Bouchy, F., Moutou, C., Queloz, D., & the CoRoT Exoplanet Science Team 2009, IAUS...



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...: hide and seek in the CoRoT-7 system R. D. Haywood,1 † A. Collier Cameron,1 D. Queloz... of the transiting super-Earth CoRoT-7b, several investigations have yielded... re-observed CoRoT-7 in 2012 January with both HARPS and CoRoT, so... of the orbits of CoRoT-7b and CoRoT-7c. We measure the... ± 1.08 M⊕ , respectively. The density of CoRoT-7b is (6.61 ± 1.72)(Rp... velocities – stars: activity – stars: individual: CoRoT-7 – planetary systems. 1 I N T RO D U C T I O N In 2009... discovery of the transiting planet CoRoT-7b with an orbital period... to measure the mass of CoRoT-7b. Based on observations made... in the CoRoT photometry. The star’s light curve (2008–2009 CoRoT run... cent, which tells us that CoRoT-7 is more active than the... Euler Swiss telescope confirmed that CoRoT-7 was very spotted throughout the..., Bonfils & Santos 2012) to the CoRoT-7 system. This program simulates spots... obtain mass estimates for CoRoT-7b and CoRoT-7c. They judge that... variations. Their mass estimate for CoRoT-7b is in agreement with... method and estimate masses for CoRoT-7b and 7c. They compared... 13.6 ± 1.4 M⊕ for CoRoT-7c, but make no mention of CoRoT-7d. The...), which makes use of the CoRoT light curve (L´eger et al... preparation). The spot activity on CoRoT-7 changes very rapidly and it... in 2012 January with the CoRoT satellite and HARPS spectrograph. In... I O N S 2.1 Photometry CoRoT-7 (average V-mag = 11.67) was observed with the CoRoT satellite... run. Measurements were taken in CoRoT’s high cadence mode (every 32... data were reduced with the CoRoT imagette pipeline with an optimized... the CoRoT transit ephemeris, thus confirming the planetary nature of CoRoT-7b... attributed to the orbit of CoRoT-7c, another super-Earth with... a slightly smaller planetary radius for CoRoT-7b than initially found, of... based on a fit to the CoRoT light curve, which was computed... confirm the presence of CoRoT-7b and CoRoT-7c, but find different... obtain a more accurate mass for CoRoT-7b. The method relies on... al. (2010) report a mass of CoRoT-7b of 6.9 ± 1.4 M⊕ and the second... activity in CoRoT-7 2519 Table 1. Transit information based on both CoRoT runs... orbital motion of CoRoT. A combined analysis of both CoRoT data sets is... simulations (see Section 2). 2.2 Spectroscopy The CoRoT-7 system was observed with the.... 2 shows the RV variations of CoRoT-7 during the two campaigns. The...(s) are Figure 2. RV variations of CoRoT-7 measured with HARPS, during the... December 8, 2014 Figure 1. Upper panel: CoRoT-7 light curve over the span... to be interpolated from the CoRoT light curve. In order to... the quasiperiodic nature of the CoRoT light curve, as evolving active... the GP fit to the CoRoT photometry. For a data set y (Rasmussen... (t). Planets and stellar activity in CoRoT-7 determined by Barros et al... d for the candidate planet signal CoRoT-7d, and about half a day...). Because the orbital period of CoRoT-7b is close to 1 d, its... are the orbital period of CoRoT-7b derived from the transit... after fitting the orbits of CoRoT-7b, CoRoT-7c and a third Keplerian... the non-zero eccentricity of CoRoT-7c. Indeed, keeping eb fixed... signals of planets b and c. 5.3 9-d signal: CoRoT-7d or stellar activity? 5 R E S U LT... Planets and stellar activity in CoRoT-7 2523 Table 3. Outcome of a selection... to confirm the presence of CoRoT-7d as its orbital period... of CoRoT-7b. 5.4 Best RV model: 2 planets + stellar activity 5.6 CoRoT-7c 5.5 CoRoT-7b The orbital parameters of CoRoT-7b are...) We make a robust detection of CoRoT-7c at an orbital period... underestimating the RV amplitude of CoRoT-7c by up to 0.5 ms... Rc = 3.54 R⊕ . With this radius, CoRoT-7c would have to have... with respect to the observer. CoRoT-7b’s orbital axis is inclined... transit. 5.7 The stellar activity of CoRoT-7 In Model 2, the rms scatter... active host stars such as CoRoT-7, the activity contribution largely dominates... slowly rotating stars such as CoRoT-7, the suppression of convective blueshift... Lomb–Scargle periodograms of the CoRoT 2012 light curve and the... the periodogram of the full CoRoT 2012 light curve, while panel... 5.6. Planets and stellar activity in CoRoT-7 2525 Downloaded from http://mnras... 2012 CoRoT light curve; (b) the GP fit to the 2012 CoRoT light... . Planets and stellar activity in CoRoT-7 2527 2528 R. D. Haywood et al... period. In the case of CoRoT-7, these combined signatures have an... The CoRoT-7 system was re-observed in 2012 with the CoRoT satellite... by the magnetic activity of CoRoT-7. This approach makes use of... Grant agreement number 239953. The CoRoT space mission, launched on 2006... that the transiting super-Earth CoRoT-7b has a mass of 4.73... by Bruntt et al. (2010), CoRoT-7b has a density of (6.61.... We confirm the presence of CoRoT-7c, which has a mass of... the stellar rotation at ∼7.9 d. In CoRoT-7, the RV modulation induced by.... Planets and stellar activity in CoRoT-7 The marginal likelihood m of a data... A1. HARPS 2012 data for CoRoT-7, processed in the same way... ) Planets and stellar activity in CoRoT-7 2531 Table A1 – continued Julian...



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... eclipse of the transiting exoplanet CoRoT-2b R. Alonso1 , T. Guillot2 , T. Mazeh3,4 , S. Aigrain5... curve of the transiting exoplanet CoRoT-2b, aimed at detecting the... data were obtained with the CoRoT satellite during its first run... estimate a surface brightness temperature of T p,CoRoT = 1910+90 −100 K. We provide... al. (2009). The transiting planet CoRoT-2b (Alonso et al. 2008... first ∼150-d pointing of the CoRoT mission (Baglin et al. 2006.... Based on observations obtained with CoRoT, a space project operated by the... has been delineated to date. CoRoT-2b not only belongs to... 3.1MJup . The host star of CoRoT-2b exhibits several signs of... the photometric light curve of CoRoT-2 that can be used to... white light curve of the CoRoT public data. The technique is... detect the secondary eclipse of CoRoT-1b (Alonso et al. 2009b... al.: The secondary eclipse of CoRoT-2b out a more careful filtering..., and discuss the results. 2. Observations CoRoT-2b was observed during the.... (2008). Fig. 1. Light curve of CoRoT-2 where the modeled transits have... min bins. 3. Analysis of the CoRoT light curve The two most... of the light curve of CoRoT-2 are the transits by its.... 2. The amplitude spectra of the CoRoT-2 light curve, before (top) and... al.: The secondary eclipse of CoRoT-2b Fig. 3. Depth of a trapezoid...±0.0020% is detected in the CoRoT light curve at an orbital... Fig. 4. Phase-folded curve of CoRoT-2b during the phases of... al.: The secondary eclipse of CoRoT-2b 4. Discussion In the optical... T eff of the star. Taking the CoRoT spectral response function into account... flux is emitted at the CoRoT wavelengths. As an example, AB...-albedo brightness temperature in the CoRoT bandpass calculated this way and... uncertainties on the T eff resulted in T p,CoRoT = 1910+90 −100 K. If we... exoplanets in similar conditions as CoRoT-2b have been reported by... such that Ag < 0.20 using CoRoT’s red channel of the light... would need chromatic information. The CoRoT data are delivered in three... of the secondary eclipse of CoRoT-2b is roughly the same... = T (R /a)1/2 [ f (1 − A)]1/4 . Fig. 6. The equilibrium temperature of CoRoT-2b as a function of the... the excellent capabilities of the CoRoT mission at detecting planets with... Alonso, R., Aigrain, S., Pont, F., Mazeh, T., & The CoRoT Exoplanet Science Team 2009a, IAU...