CoRoT-1b

Last updated
CoRoT-1b [1] [2]
Exoplanet Comparison CoRoT-1 b.png
Size comparison of CoRoT-1b with Jupiter.
Discovery
Discovered by Barge et al.
Discovery site France
Discovery date3 May 2007 [3]
Transit
Orbital characteristics
0.02752+0.00022
−0.00023 AU
Eccentricity <0.036 [4]
1.5089682±0.0000005 [5] d
Inclination 85.10±0.50 [6]
Star CoRoT-1 [2]
Physical characteristics
Mean radius
1.715±0.030 [4] RJ
Mass 1.23±0.10 [4] MJ
Mean density
380 ± 50  kg/m3 (641 ± 84  lb/cu yd) [6]
11.5  m/s2 (38  ft/s2) [7]
Temperature 1,898±50 [6]

    CoRoT-1b [2] (previously named CoRoT-Exo-1b) [1] is a transiting extrasolar planet approximately 2,630 light-years away in the constellation of Monoceros. The planet was discovered orbiting the yellow dwarf star CoRoT-1 in May 2007. The planet was the first discovery by the French-led CoRoT Mission.

    Contents

    Discovery

    CoRoT-1b was identified as the best planetary candidate from the CoRoT spacecraft initial run from February 6 to April 2, 2007. Follow-up photometry with the Wise Observatorys 1.0 m telescope and at the Canada–France–Hawaii Telescope eliminated many of the possible false positives for the transit signal. 9 radial velocity measurements of CoRoT-1 were made at Haute-Provence Observatory in March–April and October 2007 with the SOPHIE échelle spectrograph. The radial velocity data matched the CoRoT light curve and supported the planetary nature of CoRoT-1b and eliminated other possibilities such as background stars, grazing eclipsing binaries, or a triple system. [6]

    The discovery was publicly announced on May 3, 2007 [3] and submitted for publication on January 4, 2008. [6]

    Characteristics

    The planet is a large hot Jupiter, about 1.49 times the radius of Jupiter and approximately 1.03 times as massive, based on ground observations of the star. Its large size is due to its low density combined with the intense heating of its parent star causing the outer layers of the atmosphere to bloat. [6]

    Observation of phases

    In May 2009 CoRoT-1b became the first extrasolar planet for which optical (as opposed to infrared) observations of phases were reported. [8] These observations suggest that there is not significant heat transfer between the (tidally locked) night and day sides of the planet. [9]

    See also

    Related Research Articles

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    <span class="mw-page-title-main">XO-1</span> Star in the constellation Corona Borealis

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    <span class="mw-page-title-main">XO-1b</span> Extrasolar planet in the constellation Corona Borealis

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    <span class="mw-page-title-main">CoRoT-2b</span> Extrasolar planet in the constellation Aquila

    CoRoT-2b is the second extrasolar planet to be detected by the French-led CoRoT mission, and orbits the star CoRoT-2 at a distance of 700 light years from Earth towards the constellation Aquila. Its discovery was announced on 20 December 2007. After its discovery via the transit method, its mass was confirmed via the radial velocity method.

    <span class="mw-page-title-main">CoRoT-3b</span> Brown dwarf or exoplanet orbiting CoRoT-3

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    <span class="mw-page-title-main">CoRoT-4b</span> Extrasolar planet in the constellation Monoceros

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    <span class="mw-page-title-main">CoRoT-5b</span>

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    CoRoT-4 is a yellow-white dwarf main-sequence star in the constellation Monoceros.

    <span class="mw-page-title-main">CoRoT-7b</span> Hot Super-Earth orbiting CoRoT-7

    CoRoT-7b is an exoplanet orbiting the star CoRoT-7 in the constellation of Monoceros, 489 light-years from Earth. It was first detected photometrically by the French-led CoRoT mission and reported in February 2009. Until the announcement of Kepler-10b in January 2011, it was the smallest exoplanet to have its diameter measured, at 1.58 times that of the Earth and the first potential extrasolar terrestrial planet to be found. The exoplanet has a very short orbital period, revolving around its host star in about 20 hours.

    <span class="mw-page-title-main">CoRoT-1</span> Yellow dwarf star in the constellation Monoceros

    CoRoT-1 is a yellow dwarf main sequence star similar to the Sun. The star is located approximately 2,630 light-years away in the constellation of Monoceros. The apparent magnitude of this star is 13.6, which means it is not visible to the naked eye; however, it can be seen through a medium-sized amateur telescope on a clear, dark night. The first exoplanet discovered in the course of the CoRoT mission orbits this star; it is considered to be a "hot Jupiter", and is approximately as massive as the planet Jupiter itself.

    CoRoT-2 is a yellow dwarf main sequence star a little cooler than the Sun. This star is located approximately 700 light-years away in the constellation of Aquila. The apparent magnitude of this star is 12, which means it is not visible to the naked eye but can be seen with a medium-sized amateur telescope on a clear dark night.

    CoRoT-3 is a white-yellow dwarf main sequence star hotter than the Sun. This star is located approximately 2560 light-years away in the constellation of Aquila. The apparent magnitude of this star is 13, which means it is not visible to the naked eye but can be seen with a medium-sized amateur telescope on a clear dark night.

    CoRoT-7 is a binary star system.

    CoRoT-11b is a transiting Hot Jupiter-sized exoplanet found by the CoRoT space telescope in 2010.

    CoRoT-19b is a transiting exoplanet found by the CoRoT space telescope in 2011.

    References

    1. 1 2 Schneider, J. (2009-03-10). "Change in CoRoT planets names". Exoplanets (Mailing list). Archived from the original on 2010-01-18. Retrieved 2009-03-19.
    2. 1 2 3 "Notes for planet CoRoT-1 b". Extrasolar Planets Encyclopaedia . Retrieved 2009-03-17.
    3. 1 2 "COROT discovers its first exoplanet!". CNES Centre National D'Études Spatiales. 2007-05-03. Retrieved 2019-01-19.
    4. 1 2 3 Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID   118923163.
    5. ↑ Sada, Pedro V.; et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv: 1202.2799 . Bibcode:2012PASP..124..212S. doi:10.1086/665043. S2CID   29665395.
    6. 1 2 3 4 5 6 Barge, P.; et al. (2008). "Transiting exoplanets from the CoRoT space mission I. CoRoT-Exo-1b: a low-density short-period planet around a G0V star". Astronomy and Astrophysics. 482 (3): L17–L20. arXiv: 0803.3202 . Bibcode:2008A&A...482L..17B. doi:10.1051/0004-6361:200809353.
    7. ↑ Calculated using Newtonian gravity:
    8. ↑ Ignas A. G. Snellen; Ernst J. W. de Mooij; Simon Albrecht (2009-05-28). "The changing phases of extrasolar planet CoRoT-1b". Nature. 459 (7246): 543–545. arXiv: 0904.1208 . Bibcode:2009Natur.459..543S. doi:10.1038/nature08045. PMID   19478779. S2CID   4347612.
    9. ↑ Andrea Thompson (2009-05-27). "Exoplanet Phases Seen in Optical Light". Space.com. Retrieved 2009-05-27.

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