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Southern IRDCs seen with Spitzer/MIPS

Published online by Cambridge University Press:  01 August 2006

H. Linz ,
Ra. Klein ,
L. Looney ,
Th. Henning ,
B. Stecklum  and
L.-Å. Nyman
H. Linz
Affiliation:
MPIA Heidelberg, Germany
Ra. Klein
Affiliation:
MPE Garching, Germany & UC Berkeley, USA
L. Looney
Affiliation:
University of Illinois, Urbana–Champagne, USA
Th. Henning
Affiliation:
MPIA Heidelberg, Germany
B. Stecklum
Affiliation:
TLS Tautenburg, Germany
L.-Å. Nyman
Affiliation:
ESO, Chile
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Abstract

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Infrared dark clouds (IRDCs) are generally assumed to be a promising hunting ground for tracing very early stages of massive star formation. Observations with Spitzer are a viable tool to probe their interiors that are still dominated by strong dust extinction even at 8 μm. With Spitzer/MIPS, we have observed several IRDCs at 24 and 70 micron. We generally find weak 24 micron sources within the IRDCs. However, at 70 micron these sources remain weak and thus indicate lower luminosities at the current state of evolution. Indications for internal substructures exist, separating regions with compact IR sources from even more dark regions.

Keywords

infrared: ISMstars: formationISM: individual (G316.719+0.073)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 440
Copyright
Copyright © International Astronomical Union 2007