Astronomy:53 Aurigae
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 38m 23.01009s[1] |
| Declination | +28° 59′ 03.6220″[1] |
| Apparent magnitude (V) | 5.744[2] |
| Characteristics | |
| Spectral type | B9 Mn + F0m[3] |
| U−B color index | −0.07[4] |
| B−V color index | −0.02[4] |
| Astrometry | |
| Radial velocity (Rv) | 13.1±5.0[5] km/s |
| Proper motion (μ) | RA: −16.390[1] mas/yr Dec.: −14.305[1] mas/yr |
| Parallax (π) | 8.5139 ± 0.1372[1] mas |
| Distance | 383 ± 6 ly (117 ± 2 pc) |
| Absolute magnitude (MV) | +0.48[6] |
| Orbit[7] | |
| Period (P) | 38.90 yr |
| Semi-major axis (a) | 0.159″ |
| Eccentricity (e) | 0.557 |
| Inclination (i) | 119.5° |
| Longitude of the node (Ω) | 113.5° |
| Periastron epoch (T) | B 1976.73 |
| Argument of periastron (ω) (secondary) | 343.3° |
| Details | |
| 53 Aur A | |
| Mass | 2.49±0.13[8] M☉ |
| Surface gravity (log g) | 4.0[3] cgs |
| Temperature | 10750[3] K |
| Rotational velocity (v sin i) | 25[3] km/s |
| 53 Aur B | |
| Surface gravity (log g) | 4.0[3] cgs |
| Temperature | 7,250[3] K |
| Rotational velocity (v sin i) | 0[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
53 Aurigae is a binary star system in the northern constellation of Auriga. It is visible to the naked eye as a dim star with a combined apparent visual magnitude of 5.74.[2] Parallax estimates put it at a distance of 383 light-years (117 parsecs) away.[1] The system is receding from the Earth with a heliocentric radial velocity of 13 km/s.[5]
The two components of 53 Aurigae orbit each other every 39 years with an eccentricity of 0.557.[7] The primary component, 53 Aurigae A, is chemically peculiar since it contains higher-than-normal amounts of manganese,[3] but also europium, chromium, and mercury.[8] It is a B-type main-sequence mercury-manganese star,[8] while the secondary component, 53 Aurigae B, is an early F-type main-sequence star.[8] The total mass of the system is estimated to be 4.8 M☉.[8]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 Høg, E. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. Bibcode: 2000A&A...355L..27H.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Zverko, J.; Žižňovský, J.; Mikulášek, Z.; Iliev, I. Kh. (2008). "53 Aurigae revisited: a B9Mn + F0m composite spectrum". Contributions of the Astronomical Observatory Skalnaté Pleso 38 (2): 467–468. Bibcode: 2008CoSka..38..467Z.
- ↑ 4.0 4.1 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode: 1986EgUBV........0M. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1.
- ↑ 5.0 5.1 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ Murphy, Simon J.; Corbally, Christopher J.; Gray, Richard O.; Cheng, Kwang-Ping; Neff, James E.; Koen, Chris; Kuehn, Charles A.; Newsome, Ian et al. (2015). "An Evaluation of the Membership Probability of 212 λ Boo Stars. I. A Catalogue". Publications of the Astronomical Society of Australia 32: e036. doi:10.1017/pasa.2015.34. Bibcode: 2015PASA...32...36M.
- ↑ 7.0 7.1 "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6.
- ↑ 8.0 8.1 8.2 8.3 8.4 Wraight, K. T.; Fossati, L.; Netopil, M.; Paunzen, E.; Rode-Paunzen, M.; Bewsher, D.; Norton, A. J.; White, Glenn J. (2012). "A photometric study of chemically peculiar stars with the STEREO satellites - I. Magnetic chemically peculiar stars★". Monthly Notices of the Royal Astronomical Society 420 (1): 757–772. doi:10.1111/j.1365-2966.2011.20090.x. Bibcode: 2012MNRAS.420..757W.
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