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K2-3

K2-3 , also known as EPIC 201367065 , [ 8 ] is a red dwarf star with three known planets. It is on the borderline of being a late orange dwarf / K-type star, but because of its ...

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K2-3, also known as EPIC 201367065,[8] is a red dwarf star with three known planets. It is on the borderline of being a late orange dwarf/K-type star, but because of its temperature, it is classified as a red dwarf (4,000 K is typically the division line between spectral class M and K).

At a distance of 143 light-years (44 parsecs),[2] the star's proximity means it is bright enough to make it feasible for astronomers to study the planets' atmospheres to determine whether they are like Earth's atmosphere and possibly conducive to life.

Planetary system

K2-3 has three confirmed exoplanets, discovered in 2015.[4] All are low-density super-Earths or sub-Neptunes, with the outermost orbiting near the inner edge of the habitable zone.[9][6]

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 7 Vallenari, A.; et al. (Colaboración Gaia) (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 .  Registro Gaia DR3 para esta fuente en VizieR .
  3. ↑ Henden, AA; et al. (2016). "Catálogo de datos en línea VizieR: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)". Catálogo de datos en línea VizieR: II/336. Publicado originalmente en: 2015AAS...22533616H . 2336 . Bibcode : 2016yCat.2336....0H . Entrada del catálogo de Vizier
  4. 1 2 3 4 Crossfield, Ian JM; et al. (2015). "Una estrella M cercana con tres supertierras en tránsito descubierta por K2" . The Astrophysical Journal . 804 (1) 10. arXiv : 1501.03798 . Bibcode : 2015ApJ...804...10C . doi : 10.1088/0004-637X/804/1/10 . 
  5. 1 2 3 Skrutskie, MF; et al. (2006). "The Two Micron All Sky Survey (2MASS)" . The Astronomical Journal . 131 (2): 1163– 1183. Bibcode : 2006AJ....131.1163S . doi : 10.1086/498708 . Entrada del catálogo de Vizier
  6. 1 2 3 Diamond-Lowe, Hannah; et al. (2022-11-01). "El sistema K2-3 revisitado: prueba de la fotoevaporación y la pérdida de masa impulsada por el núcleo con tres planetas pequeños que abarcan el valle del radio" . The Astronomical Journal . 164 (5) 172. arXiv : 2207.12755 . Bibcode : 2022AJ....164..172D . doi : 10.3847/1538-3881/ac7807 . 
  7. ↑Kosiarek, Molly R.; et al. (2019). "Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, and d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits". The Astronomical Journal. 157 (3) 97. arXiv:1812.08241. Bibcode:2019AJ....157...97K. doi:10.3847/1538-3881/aaf79c. S2CID 119440420.
  8. 12"K2-3". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-04-19.
  9. ↑Damasso, M.; et al. (2018). "Eyes on K2-3: A system of three likely sub-Neptunes characterized with HARPS-N and HARPS". Astronomy & Astrophysics. 615 A69. arXiv:1802.08320. Bibcode:2018A&A...615A..69D. doi:10.1051/0004-6361/201732459.
  10. ↑Bonomo, A. S.; et al. (2023). "Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities: No excess of cold Jupiters in small planet systems". Astronomy & Astrophysics. 677 A33. arXiv:2304.05773. Bibcode:2023A&A...677A..33B. doi:10.1051/0004-6361/202346211.