HD 43899

HD 43899
Location of HD 43899 (circled in red)
Observation data
Epoch J2000.0      Equinox ICRS
Constellation Columba
Right ascension 06h 17m 01.23139s
Declination −37° 44′ 14.8056″
Apparent magnitude (V) 5.53±0.01
Characteristics
Evolutionary stage red clump
Spectral type K2 III
U−B color index +1.11
B−V color index +1.14
Astrometry
Radial velocity (Rv)66.5±4.3 km/s
Proper motion (μ) RA: +1.657 mas/yr
Dec.: +83.920 mas/yr
Parallax (π)11.4725±0.0449 mas
Distance284 ± 1 ly
(87.2 ± 0.3 pc)
Absolute magnitude (MV)+0.73
Details
Mass1.15±0.10 M☉
Radius11.67±0.19 R☉
Luminosity61+2.6
−5.0 L☉
Surface gravity (log g)2.04±0.24 cgs
Temperature4,686±122 K
Metallicity [Fe/H]−0.12±0.08 dex
Rotational velocity (v sin i)2.9±1 km/s
Age6.32±1.68 Gyr
Other designations
86 G. Columbae, CD−37°2707, CPD−37°890, GC 8075, HD 43899, HIP 29842, HR 2263, SAO 196653
Database references
SIMBADdata

HD 43899, also designated as HR 2263, is a solitary, orange hued star located in the southern constellation Columba, the dove. It has an apparent magnitude of 5.53, 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. It appears to be rapidly receding with a heliocentric radial velocity of 66.5 km/s. Eggen (1993) lists HD 43899 as an old disk star and its kinematics match with that of the ζ Herculis moving group.

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. It has a stellar classification of K2 III. At present the object has 115% the mass of the Sun and an effective temperature of 4,686 K. At the age of 6.32 billion years, it has already left the main sequence and now radiates 61 times the luminosity of the Sun from an enlarged photosphere 11.7 times that of the sun. HD 43899 has an iron abundance 24% below solar levels, making it slightly metal deficient. It spins modestly with a projected rotational velocity of 2.9 km/s.

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 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.
  3. 1 2 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.
  4. 1 2 3 4 5 6 7 8 9 10 11 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.
  5. 1 2 Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
  6. 1 2 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.
  7. 1 2 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.
  8. 1 2 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.
  9. 1 2 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.
  10. ↑ 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.
  11. ↑ "HD 43899". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 31, 2022.
  12. ↑ 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.
  13. ↑ 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.
  14. ↑ 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.