Query : 2004A&A...418..869B

2004A&A...418..869B - Astronomy and Astrophysics, volume 418, 869-875 (2004/5-2)

M31-RV evolution and its alleged multi-outburst pattern.


Abstract (from CDS):

The photometric evolution of M31-RV has been investigated on 1447 plates of the Andromeda galaxy obtained over half a century with the Asiago telescopes. M31-RV is a gigantic stellar explosion that occurred during 1988 in the Bulge of M31 and that was characterized by the appearance for a few months of an M supergiant reaching Mbol=-10. The 1988 outburst has been positively detected on Asiago plates, and it has been the only such event recorded over the period covered by the plates (1942-1993). In particular, an alleged previous outburst in 1967 is excluded by the more numerous and deeper Asiago plates, with relevant implication for the interpretative models of this unique event. We outline a close analogy in spectral and photometric evolution with those of V838 Mon which exploded in our Galaxy in 2002. The analogy is found to extend also to the closely similar absolute magnitude at the time of the sudden drop in photospheric temperature that both M31-RV and V838 Mon exhibited. These similarities, in spite of the greatly differing metallicity, age and mass of the two objects, suggest that the same, universal and not yet identified process was at work in both cases.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: novae, cataclysmic variables - stars: peculiar - stars: individual: V838 Mon - stars: individual: M31-RV - galaxies: individual: M31

VizieR on-line data: <Available at CDS (J/A+A/418/869): table3.dat>

CDS comments: Stars a to q are not identified in SIMBAD.

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12247 1
2 NAME M31 RV No* 00 43 02.433 +41 12 56.17           M0 109 0
3 V* V838 Mon No* 07 04 04.8221494992 -03 50 50.648894412       15.181 14.51 M10+B3V 415 0
4 V* V4332 Sgr CV* 18 50 36.6958376520 -21 23 28.925017944         14.37 K8/M0e 164 0

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