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HD 88231

From Wikipedia, the free encyclopedia
HD 88231
Location of HD 88231 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Leo Minor
Right ascension 10h 11m 12.77777s[1]
Declination +37° 24′ 06.8383″[1]
Apparent magnitude (V) 5.84[2] (5.79 - 5.88)[3]
Characteristics
Spectral type K3 III[4]
B−V color index +1.29[5]
Variable type suspected[6]
Astrometry
Radial velocity (Rv)7.38±0.22[7] km/s
Proper motion (μ) RA: −20.679 mas/yr[1]
Dec.: −29.496 mas/yr[1]
Parallax (π)5.7353 ± 0.0663 mas[1]
Distance569 ± 7 ly
(174 ± 2 pc)
Absolute magnitude (MV)−0.59[8]
Details
Mass1.17[9] M☉
Radius24.9±1.3[10] R☉
Luminosity228±5[1] L☉
Surface gravity (log g)1.76+0.10
−0.06[11] cgs
Temperature4,487±122[12] K
Metallicity [Fe/H]+0.05[9] dex
Other designations
NSV 4764, AG+37°1046, BD+38°2110, FK5 2817, GC 13985, HD 88231, HIP 49893, HR 3993, SAO 61914[13]
Database references
SIMBADdata

HD 88231, also known as HR 3993, is a solitary orange-hued star located in the northern constellation Leo Minor. It has an apparent magnitude of 5.84,[2] making it faintly visible to the naked eye under ideal conditions. Gaia DR3 parallax measurements imply a distance of about 569 light-years,[1] and the object is currently receding with a heliocentric radial velocity of 7.38 km/s.[7] At its current distance, HD 88231's brightness is diminished by 0.17 magnitudes due to interstellar extinction[14] and it has an absolute magnitude of −0.59.[8]

The object has a stellar classification of K3 III,[4] indicating that it is an evolved red giant star. It has a comparable mass to the Sun[9] but it has expanded to 24.9 times the radius of the Sun.[10] It radiates 228 times the luminosity of the Sun[1] from its enlarged photosphere at an effective temperature of 4,487 K.[12] HD 88231 is slightly metal enriched with an iron abundance 112% that of the Sun ([Fe/H] = +0.05).[9]

HD 88231 was suspected to be variable in the K-band based on Two-Micron Sky Survey observations in 1969.[15] A 1994 paper found that it ranges from 5.79 to 5.88 in the visual band.[3] As of 2004 however, the variability has not been confirmed.[16]

References

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  1. ^ a b c d e f g 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.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
  3. ^ a b Percy, John R.; Wong, Nancy; Bohme, Dietmar; Curott, David R.; Dempsey, Frank; Fortier, George L.; Ganis, Matt; Parello, Stephanie; Landis, Howard J.; Luedeke, Kenneth D.; Pray, Donald; Smith, Michael S.; Snyder, Leroy F.; Thompson, Raymond R.; Wasson, Rick; Williams, Harold O.; Walker, William S. G.; Wood, James E. (June 1994). "Photometric surveys of suspected small-amplitude red variables III: an AAVSO photometric photometry survey". Publications of the Astronomical Society of the Pacific. 106. IOP Publishing: 611. Bibcode:1994PASP..106..611P. doi:10.1086/133420. ISSN 0004-6280. S2CID 122593597.
  4. ^ a b Wilson, Ralph E.; Joy, Alfred H. (March 1950). "Radial Velocities of 2111 Stars". The Astrophysical Journal. 111: 221. Bibcode:1950ApJ...111..221W. doi:10.1086/145261. eISSN 1538-4357. ISSN 0004-637X. S2CID 122883647.
  5. ^ Haggkvist, L.; Oja, T. (1970). "Results of BV photometry 1969-70 (Uppsala refractor)". Private Communication. Bibcode:1970Priv.........0H. S2CID 231475662.
  6. ^ Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. eISSN 1562-6881. ISSN 1063-7729. S2CID 125853869.
  7. ^ a b Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
  8. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  9. ^ a b c d Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. eISSN 1432-0746. ISSN 0004-6361. S2CID 131780028.
  10. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361.
  11. ^ Takagi, Yuhei; Itoh, Yoichi; Oasa, Yumiko (April 25, 2010). "Age-Determination Method of Pre-Main Sequence Stars with High-Resolution I-Band Spectroscopy". Publications of the Astronomical Society of Japan. 62 (2). Oxford University Press (OUP): 501–508. arXiv:1004.1971. Bibcode:2010PASJ...62..501T. doi:10.1093/pasj/62.2.501. ISSN 0004-6264. S2CID 118626904.
  12. ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl:1721.1/124721. S2CID 166227927.
  13. ^ "HD 88231". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 29, 2023.
  14. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.
  15. ^ Neugebauer, G.; Leighton, Robert B. (August 1969). "Two-micron sky survey; a preliminary catalog". NASA Special Publication. 3047. Bibcode:1969NASSP3047.....N. S2CID 117746703.
  16. ^ Samus, N. N.; Durlevich, O. V. (November 2004). "VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004)". VizieR Online Data Catalog: II/250. Bibcode:2004yCat.2250....0S.
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