The Dust Opacity of Star‐forming Galaxies | Zendy

Daniela Calzetti | Zendy

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The Dust Opacity of Star‐forming Galaxies

Author(s) -

Daniela Calzetti

Publication year - 2001

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/324269

Subject(s) - physics , astrophysics , opacity , astronomy , galaxy , elliptical galaxy , luminosity , luminous infrared galaxy , luminosity function , surface brightness fluctuation , lenticular galaxy , optics

Presence of dust in galaxies removes half or more of the stellar energy fromthe UV-optical budget of the Universe and has profound impact on ourunderstanding of how galaxies evolve. Measures of opacity in local galaxies arereviewed together with widely used theoretical and empirical methods forquantifying its effects. Existing evidence shows that the dust content ofnearby galaxies depends not only on their morphology, but also on theirluminosity and activity level. A digression is devoted to starbursts in view oftheir potential relevance for measures of opacity in distant galaxies. Scarcityof coherent multiwavelength datasets hampers our ability to derive reliableobscuration estimates in intermediate and high redshift galaxies. This, inturn, limits the reliability of inferred physical quantities, such as starformation rates, stellar population ages, galaxy luminosity functions, andothers.Comment: Invited Review for PASP, to appear in December 2001. 84 pages, including 6 tables and 11 embedded figures; uses AAS Latex macr

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