AM Canum Venaticorum
Double star AM Canum Venaticorum |
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AladinLite | |||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | Hunting dogs | ||||
Right ascension | 12 h 34 m 54.62 s | ||||
declination | + 37 ° 37 ′ 44.1 ″ | ||||
Apparent brightness | 14.13 (14.0 to 14.4) mag | ||||
Typing | |||||
B − V color index | (-0.11) | ||||
Spectral class | DBp | ||||
Variable star type | IBWD | ||||
Astrometry | |||||
parallax | (3.35 ± 0.05) mas | ||||
distance | (973 ± 15) ly (300) pc |
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Proper movement | |||||
Rec. Share: | (30.94 ± 0.07) mas / a | ||||
Dec. portion: | (12.42 ± 0.05) mas / a | ||||
Physical Properties | |||||
Dimensions | (0.71 ± 0.07 / 0.13 ± 0.01) M ☉ | ||||
Other names and catalog entries |
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AM Canum Venaticorum is a binary star system consisting of a white dwarf and a degenerate companion at a distance of almost 1000 light years . He is the prototype of the so-called AM Canum Venaticorum stars , which belong to the cataclysmic variables .
In AM Canum Venaticorum is believed that an extreme helium star matter to the white dwarf transferred .
Individual evidence
- ↑ a b c d e AM CVn. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 14, 2018 .
- ↑ a b c AM CVn. In: VSX. AAVSO, accessed September 14, 2018 .
- ↑ a b J.-E. Solheim: AM CVn Stars: Status and Challenges . In: PASP . Oct 2010. bibcode : 2010PASP..122.1133S . doi : 10.1086 / 656680 .