| 词条 | U Coronae Borealis |
| 释义 |
|constell= Corona Borealis |name= U Coronae Borealis |type= B6 V + F8 III-IV[1] |ra= {{RA|15|18|11.35252}}[1] |dec= {{DEC|+31|38|49.4159}}[1] | names = {{odlist|HD=136175|HIP=74881|BD=+32° 2569|SAO=64619}}[1] }}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[2] 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.[3] References1. ^1 2 3 {{cite simbad|title = V* U CrB|accessdate = 10 March 2015}} {{Stars of Corona Borealis}}2. ^{{cite web|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=10603 |title=U Coronae Borealis|author=VSX|date=4 January 2010|work=AAVSO Website|publisher=American Association of Variable Star Observers|accessdate=10 March 2015}} 3. ^{{cite journal|author1=Ibanoǧlu, C. |author2=DervişoǧLu, A. |author3=Ćakırlı, Ö. |author4=Sipahi, E. |author5=Yüce, K. |date=2012|title=Carbon deficiencies in the primaries of some classical Algols|journal=Monthly Notices of the Royal Astronomical Society|volume=419|issue=2|pages=1472–79|bibcode=2012MNRAS.419.1472I|arxiv = 1109.1939 |doi = 10.1111/j.1365-2966.2011.19812.x }} 8 : Corona Borealis|Objects with variable star designations|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects|Algol variables|B-type main-sequence stars|F-type giants |
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