HD 43899

Last updated
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]
Distance 284 ± 1  ly
(87.2 ± 0.3  pc)
Absolute magnitude  (MV)+0.73 [7]
Details
Mass 1.15±0.10 [3]   M☉
Radius 12.38 [8]   R☉
Luminosity 61+2.6
−5.0 [1]   L☉
Surface gravity (log g)2.04±0.24 [3]   cgs
Temperature 4,686±122 [9]   K
Metallicity [Fe/H]−0.12±0.08 [3]   dex
Rotational velocity (v sin i)2.9±1 [10]  km/s
Age 6.32±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
SIMBAD data

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 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]

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<span class="mw-page-title-main">HD 168592</span> Star in the constellation of Corona Australis

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<span class="mw-page-title-main">HD 31134</span> Star in the constellation of Camelopardalis

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<span class="mw-page-title-main">HD 170521</span> Distant K-type giant; Corona Australis

HD 170521, also known as HR 6937 or rarely 12 G. Coronae Australis, is a solitary star located in the southern constellation Corona Australis. It is faintly visible to the naked eye as an orange-hued point of light with an apparent magnitude of 5.69. The object is located relatively far at a distance of approximately 1,500 light years based on Gaia DR3 parallax measurements, and it is receding with a heliocentric radial velocity of 7.2 km/s. At its current distance, HD 170521's brightness is heavily diminished by 0.46 magnitudes due to extinction from interstellar dust and it has an absolute magnitude of −1.90.

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References

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  2. 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.
  3. 1 2 3 4 5 6 7 8 9 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. 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.
  5. 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.
  6. 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.
  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. 1 2 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. 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.
  10. 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.
  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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