astro.wikisort.org - StarEO Aurigae is an eclipsing binary of Algol type in the northern constellation of Auriga. With a combined apparent magnitude of 7.71,[3] it is too faint to be seen with the unaided eye.
Eclipsing binary star of Algol type in the constellation Auriga
EO Aurigae
 The visual band light curve of EO Aurigae, adapted from Hartigan (1981) [1] |
Observation data Epoch J2000 Equinox J2000 |
Constellation |
Auriga |
Right ascension |
05h 18m 21.06592s[2] |
Declination |
+36° 37′ 55.3517″[2] |
Apparent magnitude (V) |
7.71[3] |
Characteristics |
Spectral type |
B3V + B3V[4] |
U−B color index |
−0.63[3] |
B−V color index |
0.08[3] |
Variable type |
Algol variable |
Astrometry |
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Radial velocity (Rv) | -1.1[5] km/s |
Proper motion (μ) | RA: −1.67±1.71[2] mas/yr Dec.: −3.33±0.75[2] mas/yr |
Parallax (π) | 2.12 ± 1.15 mas[2] |
Distance | approx. 1,500 ly (approx. 500 pc) |
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Details |
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EO Aur A |
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Mass | 6.22±0.73[6] M☉ |
Luminosity (bolometric) | 2,784[6] L☉ |
Temperature | 13,360[6] K |
Age | 23.6±8.0[4] Myr |
EO Aur B |
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Mass | 5.00±2.57[6] M☉ |
Luminosity (bolometric) | 1377[6] L☉ |
Temperature | 11,650[6] K |
Other designations |
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Database references |
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SIMBAD | data |
The eclipsing binary nature of the star was detected in 1943 by Sergei Gaposchkin at Harvard College Observatory.[7] It consists of a pair of 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.
- van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
- 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
- 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
- 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
External links
Constellation of Auriga |
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Stars | |
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Star clusters | |
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Nebulae | |
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На других языках
- [en] EO Aurigae
[ru] EO Возничего
EO Возничего (лат. EO Aurigae), HD 34333 — двойная затменная переменная звезда типа Алголя (EA) в созвездии Возничего на расстоянии приблизительно 4152 световых лет (около 1273 парсеков) от Солнца. Видимая звёздная величина звезды — от +8,13m до +7,56m[6]. Орбитальный период — около 4,0656 суток. Возраст звезды оценивается как около 23,6 млн лет[7].
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