Astronomy:HD 33632
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Short description: Star in Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 05h 13m 17.448s[2] |
| Declination | +37° 20′ 14.32″[2] |
| Apparent magnitude (V) | 6.47[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] + brown dwarf[4] |
| Spectral type | F8V[5] |
| Astrometry | |
| Proper motion (μ) | RA: −133.922[2] mas/yr Dec.: −136.772[2] mas/yr |
| Parallax (π) | 37.8953 ± 0.0263[2] mas |
| Distance | 86.07 ± 0.06 ly (26.39 ± 0.02 pc) |
| Absolute magnitude (MV) | +4.40[1] |
| Details | |
| Aa | |
| Mass | 1.14[6] M☉ |
| Radius | 1.11[6] R☉ |
| Luminosity | 1.51[6] L☉ |
| Surface gravity (log g) | 4.40[6] cgs |
| Temperature | 6,074[6] K |
| Age | 4.8[7] Gyr |
| Ab | |
| Mass | 46±8 MJup |
| Radius | 0.97 RJup |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 33632 is an F-type main-sequence star with a brown dwarf companion located in the constellation of Auriga. The brown dwarf was directly imaged in mid 2024.[4]
Brown dwarf
HD 33632 Ab has a radius of 0.97 Jupiter radii[4] and a mass of 46±8 Jupiter masses.[9]
References
- ↑ 1.0 1.1 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 2.5 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.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355. Bibcode: 2000A&A...355L..27H.
- ↑ 4.0 4.1 4.2 Morsy, Mona El; Currie, Thayne; Bovie, Danielle; Kuzuhara, Masayuki; Lacy, Brianna; Li, Yiting; Tobin, Taylor; Brandt, Timothy et al. (2025-04-03), "Dynamical and Atmospheric Characterization of the Substellar Companion HD 33632 Ab from Direct Imaging, Astrometry, and Radial-Velocity Data", The Astrophysical Journal 981 (1): 20, doi:10.3847/1538-4357/ada3be, Bibcode: 2025ApJ...981...20E
- ↑ Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I.". The Astronomical Journal 126 (4): 2048. doi:10.1086/378365. Bibcode: 2003AJ....126.2048G.
- ↑ 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.
- ↑ Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (2018). "Lithium abundance patterns of late-F stars: An in-depth analysis of the lithium desert". Astronomy and Astrophysics 614: A55. doi:10.1051/0004-6361/201732209. Bibcode: 2018A&A...614A..55A.
- ↑ "HD 33632". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+33632.
- ↑ Hsu, Chih-Chun; Wang, Jason J.; Xuan, Jerry W.; Ruffio, Jean-Baptiste; Morris, Evan; Echeverri, Daniel; Xin, Yinzi; Liberman, Joshua et al. (August 2024). "Rotation and Abundances of the Benchmark Brown Dwarf HD 33632 Ab from Keck/KPIC High-resolution Spectroscopy" (in en). The Astrophysical Journal 971 (1): 9. doi:10.3847/1538-4357/ad58d3. ISSN 0004-637X. Bibcode: 2024ApJ...971....9H.
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