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HD 88218
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Antlia
Right ascension 10h 09m 31.7681s [1]
Declination −35° 51′ 24.4042″ [1]
Apparent magnitude (V) 6.14 [2]
Characteristics
Spectral type G0 V [3]
U−B color index +0.16 [4]
B−V color index +0.6 [4]
Astrometry
Radial velocity (Rv)36.7±0.1 [5] km/s
Proper motion (μ) RA: −445.632  mas/ yr [1]
Dec.: +18.774  mas/ yr [1]
Parallax (π)31.5137 ± 0.0307  mas [1]
Distance103.5 ± 0.1  ly
(31.73 ± 0.03  pc)
Absolute magnitude (MV)+3.64 [2]
Details
A
Mass1.07±0.03 [6]  M☉
Radius1.66 [7]  R☉
Luminosity2.88 [7]  L☉
Surface gravity (log g)4.03±0.03 [8]  cgs
Temperature5,878±14 [8]  K
Metallicity [Fe/H]−0.14±0.01 [8]  dex
Rotational velocity (v sin i)3 [9] km/s
Age6.8+0.49
−0.41 [10]  Gyr
B
Mass0.69 [11]  M☉
Other designations
49 G. Antliae [12], CD−35°6194, CPD−35°3974, FK5 2816, GJ 379.1, HD 88218, HIP 49796, HR 3992, SAO 201109, WDS J10095-3551AB [13]
Database references
SIMBAD data

HD 88218 (HR 3992) is a binary star in the southern constellation Antlia. The system has a combined apparent magnitude of 6.14, [2] making it faintly visible to the naked eye. HD 88218 is relatively close at a distance of 103 light years [1] but is receding with a heliocentric radial velocity of 36.7  km/s. [5]

The visible component has a stellar classification of G0 V, indicating the object's status as a solar analogue. As for the companion, it is probably a K-type star based on a mass of 0.69  M☉. [11] As of 2018, both stars have a projected separation of 700  mas along a position angle of 0 °. [14] The system has an orbital period of 86.6 years. [11]

Despite the class described above, the primary is starting to evolve off the main sequence at the age of 6.8 billion years, having a low surface gravity [8] and a slightly enlarged radius of 1.66  R☉, [7] with the addition of being chromospherically inactive. [3] Nevertheless, it has 107% the mass of the Sun [6] and radiates at 2.88 times the luminosity of the Sun [7] from its photosphere at an effective temperature of 5,870  K, [8] giving a yellow glow. HD 88218 A has an iron abundance 72% that of the Sun [8] and spins leisurely with a projected rotational velocity of 3  km/s. [9]

References

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID  227254300. (Erratum:  doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b c 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  255204555.
  3. ^ a b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2 June 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv: astro-ph/0603770. Bibcode: 2006AJ....132..161G. doi: 10.1086/504637. eISSN  1538-3881. ISSN  0004-6256.
  4. ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode: 1966CoLPL...4...99J.
  5. ^ a b Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S. (August 2002). "Radial Velocities for 889 Late‐Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503–522. arXiv: astro-ph/0112477. Bibcode: 2002ApJS..141..503N. doi: 10.1086/340570. eISSN  1538-4365. ISSN  0067-0049.
  6. ^ a b Gomes da Silva, J.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Campante, T. L.; Figueira, P.; Bossini, D.; Delgado-Mena, E.; Monteiro, M. J. P. F. G.; de Laverny, P.; Recio-Blanco, A.; Lovis, C. (February 2021). "Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample". Astronomy & Astrophysics. 646: A77. arXiv: 2012.10199. Bibcode: 2021A&A...646A..77G. doi: 10.1051/0004-6361/202039765. eISSN  1432-0746. ISSN  0004-6361.
  7. ^ a b c d McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv: 1706.02208. Bibcode: 2017MNRAS.471..770M. doi: 10.1093/mnras/stx1433. eISSN  1365-2966. ISSN  0035-8711.
  8. ^ a b c d e f Sousa, S. G.; Santos, N. C.; Mayor, M.; Udry, S.; Casagrande, L.; Israelian, G.; Pepe, F.; Queloz, D.; Monteiro, M. J. P. F. G. (4 June 2008). "Spectroscopic parameters for 451 stars in the HARPS GTO planet search program". Astronomy & Astrophysics. 487 (1): 373–381. arXiv: 0805.4826. Bibcode: 2008A&A...487..373S. doi: 10.1051/0004-6361:200809698. eISSN  1432-0746. ISSN  0004-6361.
  9. ^ a b Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (May 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv: astro-ph/0405198. Bibcode: 2004A&A...418..989N. doi: 10.1051/0004-6361:20035959. ISSN  0004-6361.
  10. ^ Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: A55. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. eISSN  1432-0746. ISSN  0004-6361.
  11. ^ a b c Tokovinin, Andrei (14 March 2014). "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs". The Astronomical Journal. 147 (4): 87. arXiv: 1401.6827. Bibcode: 2014AJ....147...87T. doi: 10.1088/0004-6256/147/4/87. eISSN  1538-3881. ISSN  0004-6256.
  12. ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode: 1879RNAO....1.....G.
  13. ^ "HR 3992". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved July 17, 2022.
  14. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode: 2001AJ....122.3466M. doi: 10.1086/323920. ISSN  0004-6256.

External links

Retrieved from " https://en.wikipedia.org/?title=HD_88218&oldid=1141153497"

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