Astronomy:HD 35984
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Short description: Star in the constellation Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 29m 40.65401s[1] |
| Declination | +29° 11′ 11.2751″[1] |
| Apparent magnitude (V) | 6.20[2] |
| Characteristics | |
| Spectral type | F6III[2] |
| U−B color index | +0.02[3] |
| B−V color index | +0.45[3] |
| Astrometry | |
| Radial velocity (Rv) | +13.58[2] km/s |
| Proper motion (μ) | RA: 28.45[1] mas/yr Dec.: -46.43[1] mas/yr |
| Parallax (π) | 11.27 ± 0.59[1] mas |
| Distance | 290 ± 20 ly (89 ± 5 pc) |
| Absolute magnitude (MV) | 1.50[4] |
| Details | |
| Mass | 1.76[2] M☉ |
| Luminosity | 1.32[2] L☉ |
| Surface gravity (log g) | 4.18[2] cgs |
| Temperature | 6,939[2] K |
| Metallicity [Fe/H] | 0.19[2] dex |
| Rotational velocity (v sin i) | 40[5] km/s |
| Age | 1.26±0.12[6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 35984 is star in the northern constellation Auriga. It has an apparent magnitude of 6.20,[2] which, according to the Bortle scale, indicates it is faintly visible to the naked eye from dark rural skies. Parallax measurements by the Hipparcos satellite indicates it lies at a distance of roughly 290 light years away.[1]
A stellar classification of F6III suggests that this is an evolved giant star that has consumed the supply of hydrogen at its core.[2] However, X-ray emission, variations in luminosity, and levels of lithium may indicate that this is instead a weak-lined T Tauri star—a low mass pre-main sequence star that is relatively poor in circumstellar matter.[7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Luck, R. Earle; Heiter, Ulrike (June 2007), "Giants in the Local Region", The Astronomical Journal 133 (6): 2464–2486, doi:10.1086/513194, Bibcode: 2007AJ....133.2464L
- ↑ 3.0 3.1 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M
- ↑ Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics 501 (3): 941–947, doi:10.1051/0004-6361/200811191, Bibcode: 2009A&A...501..941H
- ↑ Uesugi, Akira; Fukuda, Ichiro (1970). "Catalogue of rotational velocities of the stars". Contributions from the Institute of Astrophysics and Kwasan Observatory (University of Kyoto). Bibcode: 1970crvs.book.....U.
- ↑ Pace, G. (March 2013), "Chromospheric activity as age indicator. An L-shaped chromospheric-activity versus age diagram", Astronomy & Astrophysics 551: 4, doi:10.1051/0004-6361/201220364, L8, Bibcode: 2013A&A...551L...8P
- ↑ Li, J. Z.; Hu, J. Y. (October 1998), "Newly discovered candidate weak-line T Tauri stars in the surrounding area of the Taurus-Auriga region", Astronomy and Astrophysics Supplement 132 (2): 173–179, doi:10.1051/aas:1998288, Bibcode: 1998A&AS..132..173L
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