The circumstellar medium of the peculiar supernova SN1997ab
Abstract
We report the detection of the slow moving wind into which the compact supernova remnant SN 1997ab is expanding. Echelle spectroscopy provides clear evidence for a well resolved narrow (Full Width at Zero Intensity, FWZI ~ 180 km/s) P-Cygni profile, both in Ha and Hb, superimposed on the broad emission lines of this compact supernova remnant. From theoretical arguments we know that the broad and strong emission lines imply a circumstellar density (n ~ 10^7 cm^-3). This, together with our detection, implies a massive and slow stellar wind experienced by the progenitor star shortly prior to the explosion.
Cite
@article{arxiv.astro-ph/9809208,
title = {The circumstellar medium of the peculiar supernova SN1997ab},
author = {Isabel Salamanca and Roberto Cid-Fernandes and Guillermo Tenorio-Tagle and Eduardo Telles and Roberto J. Terlevich and Casiana Munoz-Tunon},
journal= {arXiv preprint arXiv:astro-ph/9809208},
year = {2009}
}
Comments
10 pages, 2 figures, acepted for publication in MNRAS. Uses referee.sty, psfig.sty and mn.sty. A postscript file can also be retrieved at http://www.strw.LeidenUniv.nl/~salamanc/latest.html