Astronomy:HD 82514
| Observation data Epoch J2000.0 Equinox (celestial coordinates) | |
|---|---|
| Constellation | Antlia |
| Right ascension | 09h 31m 33.04573s[1] |
| Declination | −35° 42′ 53.0974″[1] |
| Apparent magnitude (V) | 5.86[2] |
| Characteristics | |
| Evolutionary stage | red giant branch[1] |
| Spectral type | K3 III[3] |
| B−V color index | +1.29[4] |
| Astrometry | |
| Radial velocity (Rv) | +14.3[5] km/s |
| Proper motion (μ) | RA: +156.211[1] mas/yr Dec.: −172.814[1] mas/yr |
| Parallax (π) | 11.69 ± 0.0384[1] mas |
| Distance | 279.0 ± 0.9 ly (85.5 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.20[2] |
| Details | |
| Mass | 1.09+0.69−0.26[6] M☉ |
| Radius | 11.6[7] R☉ |
| Luminosity | 65[1] L☉ |
| Surface gravity (log g) | 2.26[8] cgs |
| Temperature | 4,300±110[6] K |
| Metallicity [Fe/H] | +0.16[9] dex |
| Rotational velocity (v sin i) | <1[10] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 82514, also known as HR 3790, is a solitary, orange-hued star located in the southern constellation Antlia. It has an apparent magnitude of 5.86,[2] allowing it to be faintly seen with the naked eye. Based on parallax measurements from the Gaia spacecraft, it is estimated to be 279 light years away from the Solar System.[1] However, it is receding with a heliocentric radial velocity of 14.3 km/s.[5]
HD 82514 has a stellar classification of K3 III,[3] indicating that it is an evolved red giant. It has a comparable mass to the Sun,[6] but as a result of its evolved state, it has an enlarged radius of 11.6 R☉.[7] It radiates at 65 times the luminosity of the Sun from its photosphere at an effective temperature of roughly 4,300 K.[6] It spins slowly with a projected rotational velocity of <1 km/s,[10] which is common for most giant stars. HD 82514 has an iron abundance 44% above solar levels, making it metal enriched.[9] The star is believed to be a member of the thick disk.[9]
There is a 13th magnitude companion located 50.9″ away along a position angle of 299°.[12] This object is designated as CD −35°5751BC, which makes it a double star itself. It consists of two low mass stars separated by 2.3 " from each other.[12] However, the system is not related to HD 82514, having a smaller parallax.[13] HD 82514 is located within the boundaries of the open cluster Turner 5. However, it is only a field star.[14]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 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.
- ↑ 2.0 2.1 2.2 Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars III: Declinations −40° to −26°. Bibcode: 1982mcts.book.....H.
- ↑ Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99–110. Bibcode: 1966CoLPL...4...99J.
- ↑ 5.0 5.1 Evans, D. S. (1967). "The Revision of the General Catalogue of Radial Velocities". International Astronomical Union 30: 57. Bibcode: 1967IAUS...30...57E.
- ↑ 6.0 6.1 6.2 6.3 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R. et al. (January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era" (in en). Astronomy and Astrophysics 633: A34. doi:10.1051/0004-6361/201936360. ISSN 0004-6361. Bibcode: 2020A&A...633A..34C.
- ↑ 7.0 7.1 Stassun, Keivan G. et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ Allende Prieto, C.; Lambert, D. L. (December 1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics 352: 555–562. ISSN 0004-6361. Bibcode: 1999A&A...352..555A.
- ↑ 9.0 9.1 9.2 Eggen, O. J. (July 1993). "Evolved GK stars near the sun. I - The old disk population". The Astronomical Journal 106: 80. doi:10.1086/116622. Bibcode: 1993AJ....106...80E.
- ↑ 10.0 10.1 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. doi:10.1051/0004-6361/201220762. ISSN 0004-6361. Bibcode: 2014A&A...561A.126D.
- ↑ "HD 82514". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+82514.
- ↑ 12.0 12.1 Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal 122 (6): 3466–3471. doi:10.1086/323920. ISSN 0004-6256. Bibcode: 2001AJ....122.3466M.
- ↑ 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.
- ↑ Cantat-Gaudin, T.; Vallenari, A.; Sordo, R.; Pensabene, F.; Krone-Martins, A.; Moitinho, A.; Jordi, C.; Casamiquela, L. et al. (July 2018). "Characterising open clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution". Astronomy & Astrophysics 615: A49. doi:10.1051/0004-6361/201731251. ISSN 0004-6361. Bibcode: 2018A&A...615A..49C.
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