astro.wikisort.org - StarIU Aurigae is a triple star[6] system in the constellation Auriga, consisting of an eclipsing binary pair orbiting a third component with a period of 335 years.[7] This system is too faint to be viewed with the naked eye, having a peak apparent visual magnitude of 8.19.[3] The eclipsing pair form a Beta Lyrae-type semidetached binary of two Bp stars[3] with a period of 1.81147435 days.[4] During the primary eclipse, the visual magnitude of the system drops to 8.89, while for the secondary it decreases to 8.74.[3][8] The third component is a massive object with 17–18 M☉, and may actually be a binary – which would make this a quadruple star system.[7]
Triple star system in the constellation Auriga
IU Aurigae
 A visual band light curve for IU Aurigae, adapted from Özdemir et al. (2003) [1] |
Observation data Epoch J2000 Equinox J2000 |
Constellation |
Auriga |
Right ascension |
05h 27m 52.40539s[2] |
Declination |
+34° 46′ 58.3435″[2] |
Apparent magnitude (V) |
8.19 to 8.83[3] |
Characteristics |
Spectral type |
B0p + B1Vp[3] + ? |
U−B color index |
-0.66 |
B−V color index |
0.18 |
Variable type |
Eclipsing binary[4] |
Astrometry |
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Radial velocity (Rv) | 9 ± 5 km/s |
Proper motion (μ) | RA: −4.479[2] mas/yr Dec.: -9.049[2] mas/yr |
Parallax (π) | 0.4786 ± 0.5765 mas[2] |
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Other designations |
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Database references |
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SIMBAD | data |
References
- Özdemir, S.; Mayer, P.; Drechsel, H.; Demircan, O.; Ak, H. (May 2003). "Refinement of third body parameters and new photometric results for the early-type multiple system IU Aurigae". Astronomy & Astrophysics. 403 (2): 675–681. doi:10.1051/0004-6361:20030392. Retrieved 29 October 2021.
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- Avvakumova, E. A.; et al. (October 2013), "Eclipsing variables: Catalogue and classification", Astronomische Nachrichten, 334 (8): 860, Bibcode:2013AN....334..860A, doi:10.1002/asna.201311942, hdl:10995/27061
- Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
- "IU Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-18.
- Mayer, P.; Drechsel, H. (September 1987), "Up-to-date parameters of the eclipsing triple system IU AUR", Astronomy and Astrophysics, 183 (1): 61–65, Bibcode:1987A&A...183...61M.
- Drechsel, H.; Haas, S.; Lorenz, R.; Mayer, P. (April 1994), "New photometric and spectroscopic results for IU Aurigae -- an early-type eclipsing binary in a multiple system", Astronomy and Astrophysics, 284 (3): 853–864, Bibcode:1994A&A...284..853D.
- Watson, Christopher (January 4, 2010), "IU Aurigae", The International Variable Star Index, American Association of Variable Star Observers, retrieved 2019-08-18.
Constellation of Auriga |
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Stars | |
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Star clusters | |
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Nebulae | |
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 Category |
На других языках
- [en] IU Aurigae
[ru] IU Возничего
IU Возничего (лат. IU Aurigae), HD 35652 — тройная звезда в созвездии Возничего на расстоянии (вычисленном из значения параллакса) приблизительно 6815 световых лет (около 2089 парсеков) от Солнца. Видимая звёздная величина звезды — от +8,89m до +8,19m[6].
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