Astronomy:HAT-P-3

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Short description: Star in the constellation Ursa Major
HAT-P-3 / Dombay
Observation data
Equinox J2000.0]] (ICRS)
Constellation Ursa Major[1]
Right ascension  13h 44m 22.5937s[2]
Declination +48° 01′ 43.206″[2]
Apparent magnitude (V) 11.577(67)[3]
Characteristics
Spectral type K5[4]
Apparent magnitude (B) 12.53(20)[5]
Apparent magnitude (V) 11.577(67)[3]
Apparent magnitude (I) 10.504(79)[3]
Apparent magnitude (J) 9.936(22)[6]
Apparent magnitude (H) 9.542(28)[6]
Apparent magnitude (K) 9.448(25)[6]
Variable type planetary transit[7]
Astrometry
Radial velocity (Rv)−23.8±0.1[7] km/s
Proper motion (μ) RA: −19.619(12)[2] mas/yr
Dec.: −23.973(15)[2] mas/yr
Parallax (π)7.4159 ± 0.0143[2] mas
Distance439.8 ± 0.8 ly
(134.8 ± 0.3 pc)
Absolute magnitude (MV)5.87(15)[8]
Details
Mass0.925+0.031
−0.0134[4] M☉
Radius0.850+0.021
−0.010[4] R☉
Luminosity0.435(53)[8] L☉
Surface gravity (log g)4.58(10)[4] cgs
Temperature5,190(80)[4] K
Metallicity [Fe/H]0.24(8)[4] dex
Rotational velocity (v sin i)1.4(5)[4] km/s
Age2.9+1.7
−3.7[4] Myr
Other designations
Dombay, TYC 3466-819-1, GSC 03466-00819, 2MASS J13442258+4801432[5]
Database references
SIMBADdata

HAT-P-3, is a metal-rich K5 dwarf star located about 441 light-years away in the constellation Ursa Major. At a magnitude of about 11.5 it is not visible to the naked eye but is visible in a small to medium-sized amateur telescope. It is believed to be a relatively young star and has a slightly enhanced level of chromospheric activity.[7][9]

The star HAT-P-3 is named Dombay. The name was selected in the NameExoWorlds campaign by Russia , during the 100th anniversary of the IAU. Dombay is a resort region in the North Caucasus mountains.[10][11]

Planetary system

This star is home to the extrasolar planet HAT-P-3b, later named Teberda, discovered by the HATNet Project using the transit method.[7]

The HAT-P-3 planetary system[8][12]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b / Teberda 0.609+0.021
−0.022 MJ 		0.03899+0.00062
−0.00065 		2.8997360±0.0000020 <0.0100 87.07 ± 0.55° 0.827 ± 0.055 RJ

See also

  • List of transiting extrasolar planets

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific 99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R.  Vizier query form
  2. ↑ 2.0 2.1 2.2 2.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 Droege, Thomas F. et al. (2006). "TASS Mark IV Photometric Survey of the Northern Sky". The Publications of the Astronomical Society of the Pacific 118 (850): 1666–1678. doi:10.1086/510197. Bibcode: 2006PASP..118.1666D. Vizier catalog entry
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Mancini, L.; Esposito, M.; Covino, E.; Southworth, J.; Biazzo, K.; Bruni, I.; Ciceri, S.; Evans, D. et al. (2018). "The GAPS programme with HARPS-N at TNG". Astronomy & Astrophysics 613: A41. doi:10.1051/0004-6361/201732234. Bibcode: 2018A&A...613A..41M. 
  5. ↑ 5.0 5.1 "TYC 3466-819-1". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=TYC+3466-819-1. 
  6. ↑ 6.0 6.1 6.2 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. https://ui.adsabs.harvard.edu/abs/2006AJ....131.1163S/abstract.  Vizier catalog entry
  7. ↑ 7.0 7.1 7.2 7.3 Torres, G. et al. (2007). "HAT-P-3b: A Heavy-Element-rich Planet Transiting a K Dwarf Star". The Astrophysical Journal Letters 666 (2): L121–L124. doi:10.1086/521792. Bibcode: 2007ApJ...666L.121T. 
  8. ↑ 8.0 8.1 8.2 Chan, Tucker et al. (2011). "The Transit Light-curve Project. XIV. Confirmation of Anomalous Radii for the Exoplanets TrES-4b, HAT-P-3b, and WASP-12b". The Astronomical Journal 141 (6): 179. doi:10.1088/0004-6256/141/6/179. Bibcode: 2011AJ....141..179C. 
  9. ↑ Todorov, Kamen O. et al. (2013). "Warm Spitzer Photometry of Three Hot Jupiters: HAT-P-3b, HAT-P-4b and HAT-P-12b". The Astrophysical Journal 770 (2): 102. doi:10.1088/0004-637X/770/2/102. Bibcode: 2013ApJ...770..102T. 
  10. ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results. 
  11. ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/. 
  12. ↑ 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. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B. 

External links

Coordinates: Sky map 13h 44m 23s, +48° 01′ 43″




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