2003ApJ...582L.105S

Query : 2003ApJ...582L.105S

2003ApJ...582L.105S - Astrophys. J., 582, L105-L108 (2003/January-2)

Main-sequence stellar eruption model for V838 Monocerotis.

SOKER N. and TYLENDA R.

Abstract (from CDS):

We propose that the energy source of the outburst of V838 Mon and similar objects is an accretion event, i.e., gravitational energy rather than thermonuclear runaway. We show that the merger of two main-sequence stars, of masses M1≃1.5 M☉and M2≃0.1-0.5 M☉, can account for the luminosity, large radius, and low effective temperature of V838 Mon and similar objects. By varying the masses and types of the merging stars, and by considering slowly expanding, rather than hydrostatic, envelopes, this model can account for a large range in luminosities and radii of such outburst events.

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Journal keyword(s): Stars: Binaries: Close - Stars: Horizontal-Branch - Stars: Individual: Alphanumeric: M31 RV - Stars: Individual: Constellation Name: V838 Monocerotis - Stars: Individual: Constellation Name: V4332 Sagittarii - Stars: Mass Loss

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME M31 RV No* 00 43 02.433 +41 12 56.17           M0 111 0
2 V* V838 Mon No* 07 04 04.8221494992 -03 50 50.648894412       15.181 14.51 M10+B3V 427 0
3 V* V4332 Sgr CV* 18 50 36.6958376520 -21 23 28.925017944         14.37 K8/M0e 174 0

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