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2012MNRAS.427.2975U - Mon. Not. R. Astron. Soc., 427, 2975-2984 (2012/December-3)
Identifying Type IIn supernova progenitors in our Galaxy: the circumstellar environment of the Galactic luminous blue variable candidate Gal 026.47+0.02.
UMANA G., INGALLINERA A., TRIGILIO C., BUEMI C.S., LETO P., AGLIOZZO C., NORIEGA-CRESPO A., FLAGEY N., PALADINI R. and MOLINARI S.
Abstract (from CDS):
We have derived the physical properties of the CSE, including, in particular, one of the highest current-day mass losses from the central object and a very massive nebula, which consists of, at least, 17M☉ of ionized gas, with 1.2–3.2 x 10–2M☉ in the form of dust. Altogether, the physical properties of Gal 026.47+0.02, including a very high stellar luminosity, point towards a very massive progenitor on the main sequence.
According to the current models for Type IIn supernovae, the CSEs associated with possible progenitors have well constrained properties in both content and morphology. The derived physical characteristics of the nebula associated with Gal 026.47+0.02 actually satisfy all such requirements, providing some observational evidence of a direct link between a LBV and a possible Type IIn supernova.
Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS
Journal keyword(s): stars: early-type - stars: individual: Gal 026.47+0.02 - stars: winds, outflows - infrared: stars - continuum: stars
Simbad objects: 14
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