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The Australia Telescope National Facility Colloquium
15:30-16:30 Wed 17 Jun 2009

ATNF Marsfield Lecture Theatre

Tatiana Vasyunina

(Max-Planck Institute for Astronomy)

Comprehensive investigation of the southern Infrared Dark Clouds - Tatiana Vasyunina Colloquium

We present the first results of our program to study dust and gas properties of a new sample of southern infrared-dark clouds (IRDCs). We cross-correlated 1.2 mm continuum data from SIMBA@SEST with mid-infrared
Spitzer/GLIMPSE images. Thus, it was possible to establish the connection between emission sources at millimeter wavelengths and the dark clouds we see at 8 micron. Comparison of the obtained values for masses and column densities (both for millimeter and mid-IR data) with previously obtained results showed a clear difference between IRDCs and known low-mass pre-stellar cores, and confirm our assumptions that Infrared Dark Clouds can present the earliest stages of high-mass star formation. Furthermore, an outlook on our molecular line work towards these objects will be given to investigate the state of the gas inside these IRDCs.

More information

Contact

Patrick Weltevrede
Patrick.Weltevrede@atnf.csiro.au

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