Figure 6 from The CO-to-H2 Conversion Factor from Infrared Dust Emission across the Local Group

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The CO-to-H2 Conversion Factor from Infrared Dust Emission across the Local Group

Authors: Adam K. Leroy, Alberto Bolatto, Karl Gordon, Karin Sandstrom, Pierre Gratier, Erik Rosolowsky, Charles W. Engelbracht, Norikazu Mizuno, Edvige Corbelli, Yasuo Fukui, and Akiko Kawamura

Leroy et al. 2011 The Astrophysical Journal 737 12.

Provider: AAS Journals

Caption: Figure 6.

Left: α _CO as a function of metallicity. The gray region shows the range of commonly used α _CO for the Milky Way and the dashed line indicates the value argued for by Draine et al. (2007) studying integrated photometry of SINGS galaxies. Right: the gas-to-dust ratio δ _GDR as a function of the same metallicities. The dashed line indicates a linear scaling.

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