U Coronae Borealis

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U Coronae Borealis
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Corona Borealis
Right ascension 15h 18m 11.35252s [1]
Declination +31° 38′ 49.4159″ [1]
Spectral type B6 V + F8 III-IV [1]
Other designations
BD+32° 2569, HD 136175, HIP 74881, SAO 64619 [1]
Database references
SIMBAD data
A visual band light curve for U Coronae Borealis, adapted from et al. (2003) UCrBLightCurve.png
A visual band light curve for U Coronae Borealis, adapted from et al. (2003)

U Coronae Borealis (U CrB) is an Algol-type eclipsing binary star system in the constellation Corona Borealis. Its apparent magnitude varies between 7.66 and 8.79 over a period of 3.45 days. [3] The component stars are a blue-white main sequence star of spectral type B6V and a cooler yellow-white subgiant star of spectral type F8III-IV. [4]

References

  1. 1 2 3 4 "V* U CrB". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 10 March 2015.
  2. ↑ Yerli, S. K.; Sarna, M. J.; Zola, S.; Smith, Robert Connon; Tovmassian, G. (July 2003). "A photometric-spectroscopic analysis and the evolutionary status of the Algol-type binary U Coronae Borealis". Monthly Notices of the Royal Astronomical Society. 342 (4): 1349–1360. Bibcode:2003MNRAS.342.1349Y. doi: 10.1046/j.1365-8711.2003.06644.x . hdl: 11511/38113 .
  3. ↑ VSX (4 January 2010). "U Coronae Borealis". AAVSO Website. American Association of Variable Star Observers . Retrieved 10 March 2015.
  4. ↑ Ibanoǧlu, C.; DervişoǧLu, A.; Ćakırlı, Ö.; Sipahi, E.; Yüce, K. (2012). "Carbon deficiencies in the primaries of some classical Algols". Monthly Notices of the Royal Astronomical Society. 419 (2): 1472–79. arXiv: 1109.1939 . Bibcode:2012MNRAS.419.1472I. doi: 10.1111/j.1365-2966.2011.19812.x . S2CID   119295168.
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