HD 35984

HD 35984
Observation data
Epoch J2000      Equinox ICRS
Constellation Auriga
Right ascension 05h 29m 40.65382s
Declination +29° 11′ 11.2704″
Apparent magnitude (V) 6.20
Characteristics
Evolutionary stage main sequence or subgiant
Spectral type F6III
U−B color index +0.02
B−V color index +0.45
Astrometry
Radial velocity (Rv)+13.98±0.15 km/s
Proper motion (μ) RA: +28.262 mas/yr
Dec.: −46.896 mas/yr
Parallax (π)12.5607±0.0293 mas
Distance259.7 ± 0.6 ly
(79.6 ± 0.2 pc)
Absolute magnitude (MV)1.50
Details
Mass1.31 M☉
Radius3.26 R☉
Luminosity16.7 L☉
Surface gravity (log g)3.53 cgs
Temperature6,465 K
Metallicity [Fe/H]0.19 dex
Rotation29.5 days
Rotational velocity (v sin i)40 km/s
Age1.26±0.12 Gyr
Other designations
BD+29°909, HD 35984, HIP 25730, HR 1822, SAO 77205
Database references
SIMBADdata

HD 35984 is star in the northern constellation Auriga. It has an apparent magnitude of 6.20, 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 indicate it lies at a distance of roughly 260 light years.

A stellar classification of F6III suggests that this is an evolved giant star that has consumed the supply of hydrogen at its core. 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.

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 5 Luck, R. Earle; Heiter, Ulrike (June 2007). "Giants in the Local Region". The Astronomical Journal. 133 (6): 2464–2486. Bibcode:2007AJ....133.2464L. doi:10.1086/513194.
  4. 1 2 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
  5. ↑ 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, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511
  6. 1 2 3 4 5 Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
  7. ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G.; Siverd, Robert J.; Lund, Michael B.; Kuhn, Rudolf B.; James, David; Gaudi, B. Scott (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. arXiv:1711.03608. Bibcode:2018AJ....155...39O. doi:10.3847/1538-3881/aa9bf4.
  8. ↑ 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.
  9. ↑ Pace, G. (March 2013), "Chromospheric activity as age indicator. An L-shaped chromospheric-activity versus age diagram", Astronomy & Astrophysics, 551: 4, arXiv:1301.5651, Bibcode:2013A&A...551L...8P, doi:10.1051/0004-6361/201220364, S2CID 56420519, L8
  10. ↑ 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, Bibcode:1998A&AS..132..173L, doi:10.1051/aas:1998288