Wikipedia

HD 43899

HD 43899, also designated as HR 2263, is a solitary,[13] orange hued star located in the southern constellation Columba, the dove. It has an apparent magnitude of 5.53,[2] allowing it to be faintly visible to the naked eye. Based on parallax measurements from the Gaia spacecraft, the object is estimated to be 284 light years distant.[1] It appears to be rapidly receding with a heliocentric radial velocity of 66.5 km/s.[6] Eggen (1993) lists HD 43899 as an old disk star[14] and its kinematics match with that of the ζ Herculis moving group.[15]

HD 43899
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Columba
Right ascension 06h 17m 01.23139s[1]
Declination −37° 44′ 14.8056″[1]
Apparent magnitude (V) 5.53±0.01[2]
Characteristics
Evolutionary stage red clump[3]
Spectral type K2 III[4]
U−B color index +1.11[5]
B−V color index +1.14[5]
Astrometry
Radial velocity (Rv)66.5±4.3[6] km/s
Proper motion (μ) RA: +1.657 mas/yr[1]
Dec.: +83.920 mas/yr[1]
Parallax (π)11.4725 ± 0.0449 mas[1]
Distance284 ± 1 ly
(87.2 ± 0.3 pc)
Absolute magnitude (MV)+0.73[7]
Details
Mass1.15±0.10[3] M☉
Radius12.38[8] R☉
Luminosity61+2.6
−5.0[1] L☉
Surface gravity (log g)2.04±0.24[3] cgs
Temperature4,686±122[9] K
Metallicity [Fe/H]−0.12±0.08[3] dex
Rotational velocity (v sin i)2.9±1[10] km/s
Age6.32±1.68[3] Gyr
Other designations
86 G. Columbae[11], CD−37°2707, CPD−37°890, GC 8075, HD 43899, HIP 29842, HR 2263, SAO 196653[12]
Database references
SIMBADdata

HD 43899 is an evolved giant star that is currently on the horizontal branch, a red clump star, fusing a hydrogen shell around an inert helium core.[3] It has a stellar classification of K2 III.[4] At present the object has 115% the mass of the Sun[3] and an effective temperature of 4,686 K.[9] At the age of 6.32 billion years,[3] it has already left the main sequence and now radiates 61 times the luminosity of the Sun[1] from an enlarged photosphere 12.4 times that of the sun.[8] HD 43899 has an iron abundance 24% below solar levels, making it slightly metal deficient.[3] It spins modestly with a projected rotational velocity of 2.9 km/s.[10]

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.
  3. ^ a b c d e f g h i Gallenne, A.; Pietrzyński, G.; Graczyk, D.; Nardetto, N.; Mérand, A.; Kervella, P.; Gieren, W.; Villanova, S.; Mennickent, R. E.; Pilecki, B. (August 2018). "Fundamental properties of red-clump stars from long-baseline H-band interferometry". Astronomy & Astrophysics. 616: A68. arXiv:1806.09572. Bibcode:2018A&A...616A..68G. doi:10.1051/0004-6361/201833341. eISSN 1432-0746. ISSN 0004-6361.
  4. ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
  5. ^ a b Przybylski, A.; Kennedy, P. M. (1 December 1965). "Radial Velocities and Three-colour Photometry of 166 Southern Stars". Monthly Notices of the Royal Astronomical Society. 131 (1): 95–104. Bibcode:1965MNRAS.131...95P. doi:10.1093/mnras/131.1.95. eISSN 1365-2966. ISSN 0035-8711.
  6. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
  7. ^ 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.
  8. ^ a b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
  9. ^ 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.
  10. ^ a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361.
  11. ^ 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.
  12. ^ "HD 43899". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 31, 2022.
  13. ^ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711.
  14. ^ Eggen, O. J. (July 1993). "Evolved GK stars near the sun. I - The old disk population". The Astronomical Journal. 106: 80. Bibcode:1993AJ....106...80E. doi:10.1086/116622.
  15. ^ Eggen, O. J. (1 April 1958). "Stellar groups. II. The ζ Herculis, ε Indi and 61 Cygni Groups of High-Velocity Stars". Monthly Notices of the Royal Astronomical Society. 118 (2): 154–160. Bibcode:1958MNRAS.118..154E. doi:10.1093/mnras/118.2.154. eISSN 1365-2966. ISSN 0035-8711.
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