T Boötis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 14m 07.00s[1] |
| Declination | +19° 04′ 00.0″ |
| Apparent magnitude (V) | 9.7-<20.4[1] |
| Characteristics | |
| Variable type | N (Nova)[1] |
| Astrometry | |
| Other designations | |
AAVSO 1409+19, BD+19 2768[1] | |
T Boötis is believed to have been a nova. It was observed by only one person, Joseph Baxendell on 9, 11 and 22 April 1860, but has not been seen since.[2] It was located near Arcturus in the constellation Boötes and was at magnitude 9.75 when first seen, and magnitude 12.8 when last seen.[2] Other astronomers, including Friedrich Winnecke, Edward Charles Pickering, Ernst Hartwig and Ernst Zinner looked for a star in this location without success.[3]
Despite being usually referred to as a nova, it had characteristics that set it apart from other novae - an amplitude of at least 7 magnitudes, an unusually rapid decline in brightness and a location unusually far from the Galactic plane.[3] Joseph Ashbrook suggested in 1953 that it may be a recurrent nova which has been observed only once.[4]
References
- 1 2 3 4 "VSX: Detail for T Boo". The International Variable Star Index. AAVSO. Archived from the original on 16 May 2015. Retrieved 16 May 2015.
- 1 2 Baxendell, Joseph. "On the Three New Variable Stars, T Bootis, T. Serpentis, and S Delphini". SAO/NASA Astrophysics Data System (ADS). Smithsonian Astrophysical Observatory. Archived from the original on 16 May 2015. Retrieved 16 May 2015.
- 1 2 Burnham, Robert (1978). Burnham's Celestial Handbook Volume 1. Dover. p. 311. ISBN 0-486-23567-X. Retrieved 16 May 2015.
- ↑ Ashbrook, Joseph. "Notes on Four Novae". SAO/NASA Astrophysics Data System (ADS). Smithsonian Astrophysical Observatory. Archived from the original on 16 May 2015. Retrieved 16 May 2015.