C.D.S. - SIMBAD4 rel 1.7 - 2020.03.31CEST01:53:23

2004A&A...427..193V - Astronomy and Astrophysics, volume 427, 193-197 (2004/11-3)

Discovery of multiple shells around V838 Monocerotis.


Abstract (from CDS):

We report the discovery of multiple shells around the eruptive variable star V838Mon. Two dust shells are seen in IRAS and MSX images, which themselves are situated in a shell of CO. This securely establishes V838Mon as an evolved object. We revisit the light echo, which arises from scattering off the innermost resolved dust shell, to infer a distance to V838Mon of >5.5kpc. The dynamical timescales of the ejected shells, location in the Milky Way and inferred luminosity are consistent with V838Mon being a low-mass AGB star experiencing thermal pulses of which the 2002 eruption might have sent the star into the post-AGB phase. This scenario, however, is inconsistent with the presence of a (young and massive) B3V companion.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: circumstellar matter - stars: distances - stars: individual: V838 Monocerotis - stars: mass-loss - stars: peculiar

Status at CDS:  

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
1 HD 296134 * 07 03 58.2611768369 -04 03 47.680786500   10.8 9.27     M5 4 0
2 V* V838 Mon CV* 07 04 04.8222936785 -03 50 50.637499515   15.5   15.18 14.51 M10+B3V 367 0
3 Case 416 C* 07 05 05.7901543998 -03 37 32.704208047       12.51   C 6 0

    Equat.    Gal    SGal    Ecl

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