V373 Cassiopeiae
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 23h 55m 33.839s[1] |
Declination | +57° 24′ 43.81″[1] |
Apparent magnitude (V) | 6.045 |
Characteristics | |
Spectral type | B0.5II + B4III |
Astrometry | |
Radial velocity (Rv) | −25.5 ± 0.9 km/s |
Proper motion (μ) | RA: −3.49 ± 0.33[1] mas/yr Dec.: −0.10 ± 0.24[1] mas/yr |
Parallax (π) | 0.17 ± 0.32 mas[1] |
Other designations | |
Database references | |
SIMBAD | data |
V373 Cas is a spectroscopic binary in the constellation Cassiopeia. It is composed of two hot blue-white giant stars that have exhausted their core hydrogen and expanded off the main sequence. Lyubimkov and colleagues analysed spectral and radial velocity to calculate that the stars were 18.6 ± 2.4 and 14.2 ± 1.9 times as massive as the Sun and the age of the system at around 7-8 million years old.[2]
References
- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- ^ Lyubimkov, L. S.; Rachkovskaya, T. M.; Rostopchin, S. I.; Tarasov, A. E. (1998). "The binary system V373 Cas: orbital elements, parameters of the components, and helium abundance". Astronomy Reports. 42 (3): 312–321. Bibcode:1998ARep...42..312L.