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The heating of dust by old stellar populations in the bulge of M31

Groves, Brent Allan; Krause, Oliver; Sandstrom, K.; Schmiedeke, Anika; Leroy, Adam K.; Linz, Hendrik; Kapala, M. J.; Rix, Hans-Walter; Schinnerer, Eva; Tabatabaei, F. S.; Walter, Fabian; da Cunha, Elisabete


We use new Herschel multiband imaging of the Andromeda galaxy to analyse howdust heating occurs in the central regions of galaxy spheroids that are essentially devoid of young stars. We construct a dust temperature map of M31 through fitting modified blackbodies to the Herschel data, and find that the temperature within 2 kpc rises strongly from the mean value in the disc of 17 ± 1 to ∼35K at the centre. Ultraviolet (UV) to near-infrared (IR) imaging of the central few kpc shows directly...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2012.21696.x
Access Rights: Open Access


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