Astronomy:HD 35984
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Short description: Star in the constellation Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 05h 29m 40.65382s[2] |
| Declination | +29° 11′ 11.2704″[2] |
| Apparent magnitude (V) | 6.20[3] |
| Characteristics | |
| Evolutionary stage | main sequence or subgiant[2] |
| Spectral type | F6III[3] |
| U−B color index | +0.02[4] |
| B−V color index | +0.45[4] |
| Astrometry | |
| Radial velocity (Rv) | +13.98±0.15[2] km/s |
| Proper motion (μ) | RA: +28.262[2] mas/yr Dec.: −46.896[2] mas/yr |
| Parallax (π) | 12.5607 ± 0.0293[2] mas |
| Distance | 259.7 ± 0.6 ly (79.6 ± 0.2 pc) |
| Absolute magnitude (MV) | 1.50[5] |
| Details | |
| Mass | 1.31[6] M☉ |
| Radius | 3.26[6] R☉ |
| Luminosity | 16.7[6] L☉ |
| Surface gravity (log g) | 3.53[6] cgs |
| Temperature | 6,465[6] K |
| Metallicity [Fe/H] | 0.19[3] dex |
| Rotation | 29.5 days[7] |
| Rotational velocity (v sin i) | 40[8] km/s |
| Age | 1.26±0.12[9] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 35984 is star in the northern constellation Auriga. It has an apparent magnitude of 6.20,[3] which, according to the Bortle scale, indicates it is faintly visible to the naked eye from dark rural skies. Parallax measurements by the Gaia satellite indicates it lies at a distance of roughly 260 light years.[2]
A stellar classification of F6III suggests that this is an evolved giant star that has consumed the supply of hydrogen at its core.[3] 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.[10]
References
- ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R Constellation record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 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.
- ↑ 3.0 3.1 3.2 3.3 3.4 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.
- ↑ 4.0 4.1 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
- ↑ 6.0 6.1 6.2 6.3 6.4 Stassun, Keivan G. et al. (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.
- ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G. et al. (2018). "Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey". The Astronomical Journal 155 (1): 39. doi:10.3847/1538-3881/aa9bf4. Bibcode: 2018AJ....155...39O.
- ↑ 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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