Journal Article

Dust and ionized gas association in E/S0 galaxies with dust lanes: clues to their origin

Ido Finkelman, Noah Brosch, José G. Funes, Sudhanshu Barway, Alexei Kniazev and Petri Väisänen

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 422, issue 2, pages 1384-1393
Published in print May 2012 | ISSN: 0035-8711
Published online April 2012 | e-ISSN: 1365-2966 | DOI: https://dx.doi.org/10.1111/j.1365-2966.2012.20710.x
Dust and ionized gas association in E/S0 galaxies with dust lanes: clues to their origin

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We present results from an ongoing programme to study the dust and ionized gas in E/S0 galaxies with dust lanes. Our data, together with results from previous studies of E/S0 galaxies, are used to demonstrate the close relationship between these two components. This relationship is discussed in light of our current understanding of the nature and origin of the interstellar medium (ISM), and in particular in the context of the interplay between the different multi-temperature components. We show that focusing on dust obscured regions as tracers of the ISM, and on their properties, serves as independent evidence for the external origin of the dust and ionized gas.

Keywords: dust, extinction; H ii regions; galaxies: elliptical and lenticular, cD; galaxies: ISM

Journal Article.  7654 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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