| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 09h 20m 56.81329s [1] |
| Declination | −62° 24′ 16.6811″ [1] |
| Apparent magnitude (V) | 4.79 [2] |
| Characteristics | |
| Spectral type | G6III [3] |
| B−V color index | +0.926±0.035 [2] |
| Astrometry | |
| Radial velocity (Rv) | +51.12±0.15 [1] km/s |
| Proper motion (μ) |
RA: −27.15
[1]
mas/
yr Dec.: −14.18 [1] mas/ yr |
| Parallax (π) | 14.4946 ± 0.1593 mas [1] |
| Distance | 225 ± 2
ly (69.0 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.51 [2] |
| Details | |
| Mass | 1.95 [4] M☉ |
| Radius | 11.19+0.19 −0.15 [1] R☉ |
| Luminosity | 65.4±0.9 [1] L☉ |
| Surface gravity (log g) | 2.720±0.050 [5] cgs |
| Temperature | 4,908+43 −33 [1] K |
| Metallicity [Fe/H] | −0.360±0.020 [5] dex |
| Age | 2.04 [4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 81101 is a single [7] star in the southern constellation of Carina. It has the Bayer designation k Carinae, while HD 81101 is the star's designation in the Henry Draper catalogue. The star has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.79. [2] It is located at a distance of approximately 225 light years from the Sun based on parallax. [1] This object is drifting further away with a radial velocity of +51 km/s, [1] having come to within 22 light-years of the Sun some 1.4 million years ago. [8]
This is an aging giant star with a stellar classification of G6III, [3] having exhausted the supply of hydrogen at its core then cooled and expanded away from the main sequence. It is two [4] billion years old with 1.95 [4] times the mass of the Sun and has expanded to 11 [1] times the Sun's radius. The star is radiating 65 [1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,908 K. [1] Being a member of the old disk population, [9] the metallicity of the star's stellar atmosphere is much lower than solar. [5]
References
- ^ a b c d e f g h i j k l m n Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d 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, S2CID 119257644
- ^ a b Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H
- ^ a b c d Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv: 1507.01466, Bibcode: 2015AJ....150...88L, doi: 10.1088/0004-6256/150/3/88, S2CID 118505114.
- ^ a b c Alves, S.; et al. (April 2015), "Determination of the spectroscopic stellar parameters for 257 field giant stars", Monthly Notices of the Royal Astronomical Society, 448 (3): 2749–2765, arXiv: 1503.02556, Bibcode: 2015MNRAS.448.2749A, doi: 10.1093/mnras/stv189.
- ^ "HD 81101". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-26.
- ^ Eggleton, P. P.; Tokovinin, A. A. (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, S2CID 14878976.
- ^ Bailer-Jones, C. A. L. (March 2015), "Close encounters of the stellar kind", Astronomy & Astrophysics, 575: 13, arXiv: 1412.3648, Bibcode: 2015A&A...575A..35B, doi: 10.1051/0004-6361/201425221, S2CID 59039482, A35.
- ^ Eggen, Olin J. (April 1989), "Large and Kinematically Unbiased Samples of G- and K-Type Stars. IV. Evolved Stars of the Old Disk Population", Publications of the Astronomical Society of the Pacific, 101: 366, Bibcode: 1989PASP..101..366E, doi: 10.1086/132442, S2CID 121365843.
| Stars |
| ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||
|
Star clusters |
| ||||||||||
| Nebulae |
| ||||||||||
| Galaxies |
| ||||||||||
| |||||||||||
| |||||||||||
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 09h 20m 56.81329s [1] |
| Declination | −62° 24′ 16.6811″ [1] |
| Apparent magnitude (V) | 4.79 [2] |
| Characteristics | |
| Spectral type | G6III [3] |
| B−V color index | +0.926±0.035 [2] |
| Astrometry | |
| Radial velocity (Rv) | +51.12±0.15 [1] km/s |
| Proper motion (μ) |
RA: −27.15
[1]
mas/
yr Dec.: −14.18 [1] mas/ yr |
| Parallax (π) | 14.4946 ± 0.1593 mas [1] |
| Distance | 225 ± 2
ly (69.0 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.51 [2] |
| Details | |
| Mass | 1.95 [4] M☉ |
| Radius | 11.19+0.19 −0.15 [1] R☉ |
| Luminosity | 65.4±0.9 [1] L☉ |
| Surface gravity (log g) | 2.720±0.050 [5] cgs |
| Temperature | 4,908+43 −33 [1] K |
| Metallicity [Fe/H] | −0.360±0.020 [5] dex |
| Age | 2.04 [4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 81101 is a single [7] star in the southern constellation of Carina. It has the Bayer designation k Carinae, while HD 81101 is the star's designation in the Henry Draper catalogue. The star has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.79. [2] It is located at a distance of approximately 225 light years from the Sun based on parallax. [1] This object is drifting further away with a radial velocity of +51 km/s, [1] having come to within 22 light-years of the Sun some 1.4 million years ago. [8]
This is an aging giant star with a stellar classification of G6III, [3] having exhausted the supply of hydrogen at its core then cooled and expanded away from the main sequence. It is two [4] billion years old with 1.95 [4] times the mass of the Sun and has expanded to 11 [1] times the Sun's radius. The star is radiating 65 [1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,908 K. [1] Being a member of the old disk population, [9] the metallicity of the star's stellar atmosphere is much lower than solar. [5]
References
- ^ a b c d e f g h i j k l m n Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d 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, S2CID 119257644
- ^ a b Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H
- ^ a b c d Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv: 1507.01466, Bibcode: 2015AJ....150...88L, doi: 10.1088/0004-6256/150/3/88, S2CID 118505114.
- ^ a b c Alves, S.; et al. (April 2015), "Determination of the spectroscopic stellar parameters for 257 field giant stars", Monthly Notices of the Royal Astronomical Society, 448 (3): 2749–2765, arXiv: 1503.02556, Bibcode: 2015MNRAS.448.2749A, doi: 10.1093/mnras/stv189.
- ^ "HD 81101". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-26.
- ^ Eggleton, P. P.; Tokovinin, A. A. (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, S2CID 14878976.
- ^ Bailer-Jones, C. A. L. (March 2015), "Close encounters of the stellar kind", Astronomy & Astrophysics, 575: 13, arXiv: 1412.3648, Bibcode: 2015A&A...575A..35B, doi: 10.1051/0004-6361/201425221, S2CID 59039482, A35.
- ^ Eggen, Olin J. (April 1989), "Large and Kinematically Unbiased Samples of G- and K-Type Stars. IV. Evolved Stars of the Old Disk Population", Publications of the Astronomical Society of the Pacific, 101: 366, Bibcode: 1989PASP..101..366E, doi: 10.1086/132442, S2CID 121365843.
| Stars |
| ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||
|
Star clusters |
| ||||||||||
| Nebulae |
| ||||||||||
| Galaxies |
| ||||||||||
| |||||||||||
| |||||||||||