Astronomy:HD 24160
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Eridanus[1] |
| Right ascension | 03h 49m 27.24527s[2] |
| Declination | −36° 12′ 34.8771″[2] |
| Apparent magnitude (V) | 4.17[1] |
| Characteristics | |
| Evolutionary stage | red clump[3] |
| Spectral type | G7 III[4] |
| B−V color index | 0.927±0.045[1] |
| Astrometry | |
| Radial velocity (Rv) | +2.0±0.7[5] km/s |
| Proper motion (μ) | RA: −45.547(77)[2] mas/yr Dec.: −49.503(108)[2] mas/yr |
| Parallax (π) | 14.9781 ± 0.0915[2] mas |
| Distance | 218 ± 1 ly (66.8 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.13[1] |
| Details | |
| Mass | 2.33[6] M☉ |
| Radius | 11[7] R☉ |
| Luminosity | 81.3[6] L☉ |
| Surface gravity (log g) | 2.85±0.08[8] cgs |
| Temperature | 4,948±45[6] K |
| Metallicity [Fe/H] | +0.08±0.02[8] dex |
| Age | 1.76[6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 24160 is a single[10] star in the equatorial constellation of Eridanus. It has the Bayer designation g Eridani. It is visible to the naked eye with an apparent visual magnitude of 4.17.[1] The distance to HD 24160 can be estimated from its annual parallax shift of 14.98 mas,[2] yielding a separation of 218 light years. It is moving further from the Earth with a heliocentric radial velocity of +2 km/s.[5] This object is a coronal member of the Ursa Major Moving Group of stars that share a common motion through space.[11]
At the age of 1.76 billion years old, HD 24160 is an evolved G-type giant star with a stellar classification of G7 III,[4] having consumed the hydrogen at its core and tracked away from the main sequence. It has 2.33[6] times the mass of the Sun and has expanded to about 11[7] times the Sun's radius. The star is radiating 81.3[6] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,948 K.[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Gontcharov, G. A. (2008). "Red giant clump in the Tycho-2 catalogue". Astronomy Letters 34 (11): 785–796. doi:10.1134/S1063773708110078. Bibcode: 2008AstL...34..785G.
- ↑ 4.0 4.1 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K.
- ↑ 5.0 5.1 de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics 546: 14, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal 150 (3), doi:10.1088/0004-6256/150/3/88, Bibcode: 2015AJ....150...88L.
- ↑ 7.0 7.1 Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics 367 (2): 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P.
- ↑ 8.0 8.1 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, doi:10.1093/mnras/stv189, Bibcode: 2015MNRAS.448.2749A.
- ↑ "HD 24160". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+24160.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Chupina, N. V. et al. (June 2006), "Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars", Astronomy and Astrophysics 451 (3): 909–916, doi:10.1051/0004-6361:20054009, Bibcode: 2006A&A...451..909C.
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