Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...357..225j&link_type=abstract
Astronomy and Astrophysics, v.357, p.225-232 (2000)
Astronomy and Astrophysics
Astrophysics
30
Stars: Circumstellar Matter, Stars: Mass-Loss, Stars: Supergiants, Infrared: Stars
Scientific paper
We present the analysis of infrared photometry and millimeter spectroscopy of a sample of 74 late-type supergiants. These observations are particularly suitable to study the mass loss and the circumstellar envelopes of evolved massive stars. In particular, we quantify the circumstellar infrared excess, the relation of mass loss with stellar properties, using the K-[12] colour index as mass-loss indicator. We do not find any clear correlation between mass loss rate and luminosity. We also show that the K-band magnitude is a simple luminosity indicator, because of the relative constancy of the K-band bolometric correction. Based on observations collected at the European Southern Observatory, La Silla, Chile within program ESO 54.E-0914, and on observations collected with the IRAM 30m telescope. Tables A1 to A3 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html
Blommaert Joris A. D. L.
Groenewegen Martin A. T.
Josselin Eric
Li Fu-Li
Omont Alain
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