EO Aurigae Eclipsing binary star of Algol type in the constellation Auriga
EO Aurigae
Observation dataEpoch J2000 Equinox J2000
Constellation Auriga
Right ascension 05h 18m 21.0672s [ 2]
Declination +36° 37′ 55.362″ [ 2]
Apparent magnitude (V)7.71[ 3]
Characteristics
Spectral type B3V + B3V [ 4]
Apparent magnitude (G)
7.69[ 2]
U−B color index
−0.63[ 3]
B−V color index
0.08[ 3]
Variable type Algol variable
Astrometry Radial velocity (Rv )-1.1[ 5] km/s Proper motion (μ) RA: ± 0.034[ 2] mas /yr Dec.: ± 0.026[ 2] mas /yr Parallax (π)0.9420± 0.0306 mas [ 2] Distance 3,500 ± 100 ly pc ) Details EO Aur A Mass ± 0.73[ 6] M ☉ Luminosity (bolometric) 2,784[ 6] L ☉ Temperature 13,360[ 6] K Age ± 8.0[ 4] Myr EO Aur B Mass ± 2.57[ 6] M ☉ Luminosity (bolometric) 1,377[ 6] L ☉ Temperature 11,650[ 6] K Other designations BD +36° 1073, HD 34333, HIP 24744, SAO 57857, Gaia DR3 187043317482036224.Database references SIMBAD data
EO Aurigae is an eclipsing binary of Algol type in the northern constellation of Auriga . With a combined apparent magnitude of 7.71,[ 3]
The eclipsing binary nature of the star was detected in 1943 by Sergei Gaposchkin at Harvard College Observatory .[ 7] B-type main sequence stars orbiting each other with a period of 4.0656 days. During the eclipse of the primary star, the combined magnitude drops by 0.57; the eclipse of the secondary component drops the magnitude by 0.33.[ 8]
References
↑ Hartigan, P (January 1981). "A photoelectric lightcurve and elements of the eclipsing binary EO Aurigae" . Journal of the AAVSO . 10 : 13– 20. Bibcode :1981JAVSO..10...13H . Retrieved 29 October 2021 . 1 2 3 4 5 6 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 . 1 2 3 4 Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series , 34 : 1– 49, Bibcode :1978A& AS...34....1N 1 2 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun" . Monthly Notices of the Royal Astronomical Society . 410 (1): 190– 200. arXiv :1007.4883 Bibcode :2011MNRAS.410..190T . doi :10.1111/j.1365-2966.2010.17434.x S2CID 118629873 . ↑ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication , Carnegie Institute of Washington D.C., Bibcode :1953GCRV..C......0W 1 2 3 4 5 6 Hohle, M. M.; et al. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten , 331 (4): 349, arXiv :1003.2335 Bibcode :2010AN....331..349H , doi :10.1002/asna.200911355 , S2CID 111387483 ↑ Gaposchkin, Sergei (1943). "A New Bright Eclipsing Variable of Large Mass, HV 10327" . Publications of the Astronomical Society of the Pacific . 55 (325): 192– 194. Bibcode :1943PASP...55..192G . doi :10.1086/125543 ↑ Malkov, O. Yu.; et al. (February 2006), "A catalogue of eclipsing variables", Astronomy and Astrophysics , 446 (2): 785– 789, Bibcode :2006A& A...446..785M , doi :10.1051/0004-6361:20053137 hdl :10995/73280
