Talk:AE Andromedae/workpage
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| Observation data Epoch J2000.0 [1] Equinox J2000.0 [1] | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 43m 02.52s [1] |
| Declination | +41° 49′ 12.2″ [1] |
AE Andromedae (AE And, HV 4476)[1] is a luminous blue variable (LBV), a type of variable star. The star is one of the most luminous variables in M31, the Andromeda Galaxy.
The star was discovered by Edwin Hubble and Allan Sandage in 1953, but was not studied extensively until some 20 years later. The first spectrum was published in 1975.[2] The star was for a long time, considered one of the prototypes for the Hubble-Sandage variable type, along with M31 V15, VA-1, AF Andromedae,[3] prior to the characterization of LBVs. This type of star has since been subsumed into luminous blue variables. It has prominent Fe II lines in its emission spectrum. It is an irregular variable, both in amplitude and period. It has average apparent magnitude of 17, with poorly understood longterm variations on the order of a magnitude. Its intense stellar winds have have been measured on the order of 100 km/s.[4]
References[edit]
- ^ a b c d SIMBAD, AE Andromedae (accessed 2013-02-26)
- ^ R.M. Humphreys; "The spectra of AE Andromedae and the Hubble-Sandage variables in M31 and M33"; Astrophysical Journal, Vol. 200, p.426-429 ; September 1975; AAA014.114.322 ; doi:10.1086/153806 ; Bibcode:1975ApJ...200..426H ;
- ^ Allan Sandage, Edwin Hubble; "The Brightest Variable Stars in Extragalactic Nebulae. I. M31 and M33"; Astrophysical Journal, vol. 118, p.353; November 1953; doi:10.1086/145764 ; Bibcode:1953ApJ...118..353H
- ^ King, N. L.; Walterbos, R. A. M.; Braun, R.; "Discovery of Candidate Luminous Blue Variables in M31"; The Astrophysical Journal, Volume 507, Issue 1, pp.210-220; November 1998; doi:10.1086/306296 ; Bibcode:1998ApJ...507..210K ;
See also[edit]
Category:Andromeda Galaxy Category:Extragalactic stars Category:Luminous blue variable stars
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