IU Aurigae

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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]
PPM 70395[5]
Database references
SIMBADdata

IU Aurigae is a

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]

References

  1. doi:10.1051/0004-6361:20030392
    .
  2. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  3. ^
    hdl:10995/27061
  4. ^
    S2CID 125853869
    .
  5. ^ "IU Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-18.
  6. Bibcode:1987A&A...183...61M
    .
  7. ^
    Bibcode:1994A&A...284..853D
    .
  8. ^ Watson, Christopher (January 4, 2010), "IU Aurigae", The International Variable Star Index, American Association of Variable Star Observers, retrieved 2019-08-18.
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