Astronomy:41 Aurigae

From HandWiki
Short description: Binary star system in the constellation Auriga
41 Aurigae
Observation data
{{#ifeq:J2000|J2000.0 (ICRS)|Epoch J2000.0      Equinox J2000.0 (ICRS)| Epoch J2000      [[Astronomy:Equinox (celestial coordinates)|Equinox J2000}}
Constellation Auriga[1]
41 Aur A
Right ascension  06h 11m 36.59170s[2]
Declination +48° 42′ 39.5571″[2]
Apparent magnitude (V) 6.15[3]
41 Aur B
Right ascension  06h 11m 36.55276s[4]
Declination +48° 42′ 47.0365″[4]
Apparent magnitude (V) 6.84[3]
Characteristics
41 Aur A
Evolutionary stage Main sequence[2]
Spectral type A2Va+[5]
B−V color index 0.06[3]
41 Aur B
Evolutionary stage main sequence[6]
Spectral type kA5hA5mF0(IV-V)[5]
B−V color index 0.15[3]
Astrometry
41 Aur A
Radial velocity (Rv)31[7] km/s
Proper motion (μ) RA: +14.994[2] mas/yr
Dec.: −55.704[2] mas/yr
Parallax (π)10.6629 ± 0.0539[2] mas
Distance306 ± 2 ly
(93.8 ± 0.5 pc)
41 Aur B
Radial velocity (Rv)29[7] km/s
Proper motion (μ) RA: +19.171[4] mas/yr
Dec.: −52.460[4] mas/yr
Parallax (π)10.5899 ± 0.0969[4] mas
Distance308 ± 3 ly
(94.4 ± 0.9 pc)
Details
41 Aur A
Mass2.31[8] M☉
Radius2.08[8] R☉
Luminosity27[8] L☉
Surface gravity (log g)4.17[8] cgs
Temperature9,114[8] K
Rotational velocity (v sin i)138[9] km/s
41 Aur B
Mass1.76[8] M☉
Radius1.91[8] R☉
Luminosity11[8] L☉
Surface gravity (log g)4.13[8] cgs
Temperature7,586[8] K
Rotational velocity (v sin i)133[6] km/s
Other designations
41 Aur, BD+48°1352, HIP 29388, ADS 4773, WDS J06116+4843
41 Aur A: GC 7853, HD 42127, HR 2176, SAO 40925[10]
41 Aur B: GC 7851, HD 42126, HR 2175, SAO 40924[11]
Database references
SIMBAD41 Aur A
41 Aur B

41 Aurigae is a binary star[12] system located around 310–316 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a dim, white-hued star with a combined apparent visual magnitude of 5.83.[12] This system is moving further from the Earth with a heliocentric radial velocity of 31 km/s.[1] It is a probable member of the Hyades Supercluster.[13]

As of 2012, the pair had an angular separation of 7.39″ along a position angle of 357.7°.[14] The primary component is an A-type main-sequence star with a stellar classification of A2Va+[5] and a visual magnitude of 6.15.[3] The magnitude 6.84[3] secondary companion is a possible Am star[15] with a stellar classification of kA5hA5mF0(IV-V),[5] showing the calcium K line and hydrogen lines of an A5 star and the metal lines of an F0 star.

References

  1. ↑ 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. ↑ 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.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T. et al. (March 2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics 355: L27–L30, doi:10.1888/0333750888/2862, Bibcode: 2000A&A...355L..27H. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 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.
  5. ↑ 5.0 5.1 5.2 5.3 Gray, R. O.; Garrison, R. F. (December 1987), "The Early A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation", Astrophysical Journal Supplement 65: 581, doi:10.1086/191237, Bibcode: 1987ApJS...65..581G. 
  6. ↑ 6.0 6.1 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z. 
  7. ↑ 7.0 7.1 Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". in Batten, Alan Henry; Heard, John Frederick. University of Toronto: International Astronomical Union. Bibcode: 1967IAUS...30...57E. 
  8. ↑ 8.00 8.01 8.02 8.03 8.04 8.05 8.06 8.07 8.08 8.09 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. 
  9. ↑ Royer, F. et al. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics 463 (2): 671–682, doi:10.1051/0004-6361:20065224, Bibcode: 2007A&A...463..671R. 
  10. ↑ "41 Aur A". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=41+Aur+A. 
  11. ↑ "41 Aur B". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=41+Aur+B. 
  12. ↑ 12.0 12.1 Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E. 
  13. ↑ Eggen, O. J. (June 1985), "A systematic search for members of the Hyades Supercluster. IV - The metallic-line stars and ultrashort-period Cepheids", Astronomical Journal 90: 1046−1059, doi:10.1086/113812, Bibcode: 1985AJ.....90.1046E. 
  14. ↑ Mason, Brian D. et al. (May 2012), "Speckle Interferometry at the U.S. Naval Observatory. XVIII", The Astronomical Journal 143 (5): 6, doi:10.1088/0004-6256/143/5/124, 124, Bibcode: 2012AJ....143..124M. 
  15. ↑ Renson, P.; Manfroid, J. (2009), "Catalogue of Ap, HgMn and Am stars", Astronomy and Astrophysics 498 (3): 961–966, doi:10.1051/0004-6361/200810788, Bibcode: 2009A&A...498..961R. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:41_Aurigae&oldid=4289258"