The Formation of GMCs by Agglomeration and Self Gravity in Spiral Galaxies

Details The Formation of GMCs by Agglomeration and Self Gravity in Spiral Galaxies The Formation of GMCs by Agglomeration and Self Gravity in Spiral Galaxies

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eimw.confe..22d&link_type=abstract

"The Evolving ISM in the Milky Way and Nearby Galaxies, The Fourth Spitzer Science Center Conference, Proceedings of the confere

Physics

Galaxies: Ism, Infrared: Galaxies, Infrared: Ism, Ism: Dust, Extinction, Ism: Structure

Scientific paper

GMC formation in spiral galaxies is investigated by performing 3D MHD numerical simulations. Two scenarios for GMC formation are explored, the agglomeration of gas and smaller clouds into GMCs by spiral shocks, and gravitational instabilities in the spiral arms. Which one dominates depends on the surface density of the disk, and the thermal distribution of the gas. Resulting properties of the GMCs are found to vary according to how they are formed.

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