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Infrared Tracers of Mass-Loss Histories and Wind-ISM Interactions inHot Star Nebulae

Published online by Cambridge University Press:  01 December 2007

Patrick Morris
Patrick Morris
Affiliation:
NASA Herschel Science Center, IPAC, Caltech, M/C 100-22, Pasadena, CA 91125 email: [email protected]
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Abstract

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Infrared observations of hot massive stars and their environments provide adetailed picture of mass loss histories, dust formation, and dynamicalinteractions with the local stellar medium that can be unique to the thermalregime. We have acquired new infrared spectroscopy and imaging with thesensitive instruments onboard the SpitzerSpace Telescope in guaranteed and open time programs comprised of some of thebest known examples of hot stars with circumstellar nebulae, supplementing withunpublished Infrared Space Observatory spectroscopy. Here wepresent highlightsof our work on the environment around the extreme P Cygni-type star HDE316285,providing some defining characteristics of the star's evolution andinteractions with the ISM at unprecented detail in the infrared.

Keywords

stars: mass loss – circumstellar matter – stars: windsoutflows – infrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S250: Massive Stars as Cosmic Engines , December 2007 , pp. 361 - 366
Copyright
Copyright © International Astronomical Union 2008

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