Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-31
Astronomy and Astrophysics
Astrophysics
6 pages, 6 figs, to be published in proceedings of IAU Symposium 250: Massive Stars as Cosmic Engines by CUP, eds. F. Bresolin
Scientific paper
10.1017/S174392130802070X
Infrared observations of hot massive stars and their environments provide a detailed picture of mass loss histories, dust formation, and dynamical interactions with the local stellar medium that can be unique to the thermal regime. We have acquired new infrared spectroscopy and imaging with the sensitive instruments onboard the Spitzer Space Telescope in guaranteed and open time programs comprised of some of the best known examples of hot stars with circumstellar nebulae, supplementing with unpublished Infrared Space Observatory spectroscopy. Here we present highlights of our work on the environment around the extreme P Cygni-type star HDE316285, revealing collisionally excited H2 for the first time in a hot star nebula, and providing some defining characteristics of the star's evolution and interactions with the ISM at unprecented detail in the infrared.
Morris Pat
WRRINGS Team the Spitzer
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