Astronomy:BD−10°3166

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Short description: Star in the constellation Crater
BD−10°3166
Observation data
Equinox J2000.0]] (ICRS)
Constellation Crater
Right ascension  10h 58m 28.7825s[1]
Declination −10° 46′ 13.396″[1]
Apparent magnitude (V) 10.02[2]
Characteristics
Spectral type K3V[3]
B−V color index 0.85[2]
Astrometry
Radial velocity (Rv)26.4±2[2] km/s
Proper motion (μ) RA: −183.157±1.580[1] mas/yr
Dec.: −8.065±0.553[1] mas/yr
Parallax (π)12.17 ± 0.45[1] mas
Distance268 ± 10 ly
(82 ± 3 pc)
Absolute magnitude (MV)+5.4[4]
Details
Mass0.94[5] M☉
Radius0.9[5] R☉
Luminosity0.56[5] L☉
Surface gravity (log g)4.5[5] cgs
Temperature5257[5] K
Metallicity [Fe/H]0.30[6] dex
Rotational velocity (v sin i)5.4[7] km/s
Age5.2±3.4[5] Gyr
Other designations
GSC 05503-00946[3]
Database references
SIMBADdata
Exoplanet Archivedata

BD−10°3166 is a K-type main sequence star approximately 268 light-years away in the constellation of Crater. It was inconspicuous enough not be included in the Draper catalog (HD). The Hipparcos satellite also did not study it, so its true distance is poorly known. The distance measured by the Gaia spacecraft of 268 light years rules out a suggested companion star, LP 731-076, being its true binary star companion.[8][9]

Stellar characteristics

The star is very enriched with metals, being two to three times as metal-rich as the Sun.[6][2] Planets are common around such stars, and BD−10°3166 is not an exception. In 2000, the California and Carnegie Planet Search team discovered an extrasolar planet orbiting the star.[2]

Planetary system

In 2000, the California and Carnegie Planet Search discovered a hot Jupiter-type extrasolar planet that has a minimum mass less than half that of Jupiter's, and which takes only 3.49 days to revolve around BD−10°3166.[10]

The BD−10°3166 planetary system[10]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b >0.458 ± 0.039 MJ 0.0452 ± 0.0026 3.48777 ± 0.00011 0.019 ± 0.023 — 1.03 RJ

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics 595: A2. doi:10.1051/0004-6361/201629512. Bibcode: 2016A&A...595A...2G. https://www.aanda.org/articles/aa/full_html/2016/11/aa29512-16/aa29512-16.html. Gaia Data Release 1 catalog entry
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Butler, R. Paul et al. (2000). "Planetary Companions to the Metal-rich Stars BD -10°3166 and HD 52265". The Astrophysical Journal 545 (1): 504–511. doi:10.1086/317796. Bibcode: 2000ApJ...545..504B. 
  3. ↑ 3.0 3.1 "BD-10 3166". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=BD-10+3166. 
  4. ↑ Boro Saikia, S. et al. (2018), "Chromospheric activity catalogue of 4454 cool stars. Questioning the active branch of stellar activity cycles", Astronomy and Astrophysics 616: A108, doi:10.1051/0004-6361/201629518, Bibcode: 2018A&A...616A.108B. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Bonfanti, A.; Ortolani, S.; Piotto, G.; Nascimbeni, V. (2015). "Revising the ages of planet-hosting stars". Astronomy & Astrophysics 575: A18. doi:10.1051/0004-6361/201424951. Bibcode: 2015A&A...575A..18B. 
  6. ↑ 6.0 6.1 Sousa, S. G.; Adibekyan, V.; Delgado-Mena, E.; Santos, N. C.; Andreasen, D. T.; Ferreira, A. C. S.; Tsantaki, M.; Barros, S. C. C. et al. (2018). "SWEET-Cat updated. New homogenous spectroscopic parameters". Astronomy and Astrophysics 620: A58. doi:10.1051/0004-6361/201833350. Bibcode: 2018A&A...620A..58S. 
  7. ↑ Luck, R. Earle (January 2017). "Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants". The Astronomical Journal 153 (1): 19. doi:10.3847/1538-3881/153/1/21. 21. Bibcode: 2017AJ....153...21L. 
  8. ↑ Raghavan, Deepak et al. (2006). "Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal 646 (1): 523–542. doi:10.1086/504823. Bibcode: 2006ApJ...646..523R. 
  9. ↑ Bartlett, Jennifer L.; Lurie, John C.; Riedel, Adric; Ianna, Philip A.; Jao, Wei-Chun; Henry, Todd J.; Winters, Jennifer G.; Finch, Charlie T. et al. (2017). "The Solar Neighborhood. XXXX. Parallax Results from the CTIOPI 0.9 m Program: New Young Stars Near the Sun". The Astronomical Journal 154 (4): 151. doi:10.3847/1538-3881/aa8457. Bibcode: 2017AJ....154..151B. 
  10. ↑ 10.0 10.1 Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. Bibcode: 2006ApJ...646..505B. 

External links

Coordinates: Sky map 10h 58m 28.7798s, −10° 46′ 13.386″



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