Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..381...38h&link_type=abstract
The Second Annual Spitzer Science Center Conference: Infrared Diagnostics of Galaxy Evolution. ASP Conference Series, Vol. 381,
Astronomy and Astrophysics
Astronomy
Scientific paper
We have obtained IRS high resolution spectroscopy of two HI/HII/CO complexes in two dwarf irregular galaxies, and we use these data to examine the interaction of massive stars with the interstellar medium in these tiny, but ubiquitous systems. Specifically, we measure nebular fine structure lines, molecular lines from warm H_2, and various PAH features, when present, in order to probe the hardness of the stellar radiation field, the electron density of the nebulae, and the physical environment in which PAHs are being heated.
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