UX Antliae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 57m 09.051s |
| Declination | -37° 23' 55.06" |
| Apparent magnitude (V) | 11.85 - 18.0[1] |
| Spectral type | C |
| Other designations | |
| Database references | |
| SIMBAD | data |
UX Antliae is post-AGB star. It is an R Coronae Borealis variable star that has a base apparent magnitude of around 11.85, with irregular dimmings down to below magnitude 18.0.[1]
Researchers David Kilkenny and J.E. Westerhuys of the South African Astronomical Observatory confirmed that UX Antliae was an R Coronae Borealis variable in 1990 after noting the similarity of its spectrum to the RCB star W Mensae.[2] It had been suspected of being one since 1940, but had been little-studied and exhibited no characteristic declines between 1975 and 1990.[3]
Assuming that its absolute magnitude is around -5, it has been estimated as lying 25000 parsecs distant from Earth.[3] Kilkenny and Westerhuys noted that its spectrum fit with that of a star of spectral class F, although was deficient in hydrogen.[2]
References
- ↑ 1.0 1.1 Otero, Sebastian (23 November 2012). "UX Antliae". The International Variable Star Index. Retrieved 14 July 2014.
- ↑ 2.0 2.1 Kilkenny, D.; Westerhuys, J. E. (1990). "Spectroscopy of 'RCB' stars-IV. UX ANT". The Observatory 110: 90–92. Bibcode:1990Obs...110...90K.
- ↑ 3.0 3.1 Lawson, W. A., Cottrell, P. L., Kilkenny, D., Gilmore, A. C., Kilmartin, P. M.; Cottrell; Kilkenny; Gilmore; Kilmartin; Marang; Roberts; Van Wyk (1994). "The Variability of the R-Coronae Star Ux-Antliae at Maximum Light". Mon. Not. R. Astron. Soc. 271: 919–23. Bibcode:1994MNRAS.271..919L.
- "Post-AGB Object 279.064 +20.120". www.ncac.torun.pl.
- "Light Curve of UX Ant". www.kusastro.kyoto-u.ac.jp.
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