CoRoT-8

Last updated
CoRoT-8
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Aquila [1]
Right ascension 19h 26m 21.2426s [2]
Declination +01° 25′ 35.178″ [2]
Characteristics
Evolutionary stage main sequence star [3]
Spectral type K1V [3]
Variable type planetary transit
Astrometry
Proper motion (μ)RA: 13.683(28) mas/yr [2]
Dec.: −32.743(22) mas/yr [2]
Parallax (π)3.0903±0.0207  mas [2]
Distance 1,055 ± 7  ly
(324 ± 2  pc)
Details
Mass 0.89±0.04 [4]   M☉
Radius 0.802±0.014 [4]   R☉
Luminosity 0.41 [2]   L☉
Surface gravity (log g)4.58±0.01 [4]   cgs
Temperature 5143±178 [5]   K
Metallicity [Fe/H]0.22±0.11 [5]   dex
Rotational velocity (v sin i)2±1 [3]  km/s
Age 1.7+2.3
−1.4 [4]   Gyr
Database references
SIMBAD data
Exoplanet Archive data

CoRoT-8 is a star in the constellation Aquila at a distance of about 1055 light-years away. At least one planet revolves around the star.

CoRoT-8 is an orange dwarf which has 0.88 solar masses and 0.77 solar radius. [6] By astronomical standards, this is already a rather young star compared to the Sun: its age is about 3 billion years. It got its name in honor of the CoRoT space telescope, with the help of which its planetary companion was discovered.

In 2010, a group of astronomers working within the CoRoT program announced the discovery of the planet CoRoT-8b in this system. It is a hot gas giant, similar in mass and size to Saturn. The planet orbits at a distance of about 0.06 AU from the parent star, while making a complete revolution in 6.21 days. [3] [4] [7]

The CoRoT-8 planetary system [4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.218 ± 0.034  MJ 0.0636 ± 0.00146.212445 ± 0.000007<0.19 [7] 88.18±0.08 ° 0.619+0.016
−0.017  RJ

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 Bordé, P.; et al. (September 2010). "Transiting exoplanets from the CoRoT space mission. XI. CoRoT-8b: a hot and dense sub-Saturn around a K1 dwarf". Astronomy and Astrophysics. 520: A66. arXiv: 1008.0325 . Bibcode:2010A&A...520A..66B. doi:10.1051/0004-6361/201014775. ISSN   0004-6361. S2CID   56357511.
  4. 1 2 3 4 5 6 Raetz, St; Heras, A. M.; Fernández, M.; Casanova, V.; Marka, C. (February 2019). "Transit analysis of the CoRoT-5, CoRoT-8, CoRoT-12, CoRoT-18, CoRoT-20, and CoRoT-27 systems with combined ground- and space-based photometry". Monthly Notices of the Royal Astronomical Society. 483 (1): 824–839. arXiv: 1812.01536 . Bibcode:2019MNRAS.483..824R. doi: 10.1093/mnras/sty3085 . ISSN   0035-8711.
  5. 1 2 Mortier, A.; Santos, N. C.; et al. (October 2013). "New and updated stellar parameters for 90 transit hosts. The effect of the surface gravity". Astronomy & Astrophysics . 558: A106. arXiv: 1309.1998 . Bibcode:2013A&A...558A.106M. doi:10.1051/0004-6361/201322240.
  6. ↑ P. Bordé, F. Bouchy, M. Deleuil, J. Cabrera, L. Jorda, C. Lovis, S. Csizmadia, S. Aigrain, J. M. Almenara, R. Alonso, M. Auvergne, A. Baglin, P. Barge, W. Benz, A. S. Bonomo, H. Bruntt, L. Carone, S. Carpano, H. Deeg, R. Dvorak, A. Erikson, S. Ferraz-Mello, M. Fridlund, D. Gandolfi, J.-C. Gazzano, M. Gillon, E. Guenther, T. Guillot, P. Guterman, A. Hatzes, M. Havel, G. Hébrard, H. Lammer, A. Léger, M. Mayor, T. Mazeh, C. Moutou, M. Pätzold, F. Pepe, M. Ollivier, D. Queloz, H. Rauer, D. Rouan, B. Samuel, A. Santerne, J.Schneider, B. Tingley, S. Udry, J. Weingrill, G. Wuchterl (2010-08-02). "Transiting exoplanets from the CoRoT space mission". Astronomy and Astrophysics. 520: A66. arXiv: 1008.0325 . Bibcode:2010A&A...520A..66B. doi:10.1051/0004-6361/201014775. S2CID   56357511.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. 1 2 Bonomo, A. S.; et al. (June 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. ISSN   0004-6361. S2CID   118923163.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.