2000 character limit reached
The Herschel Virgo cluster survey: V. Star-forming dwarf galaxies - dust in metal-poor environments (1005.3058v1)
Published 17 May 2010 in astro-ph.CO
Abstract: We present the dust properties of a small sample of Virgo cluster dwarf galaxies drawn from the science demonstration phase data set of the Herschel Virgo Cluster Survey. These galaxies have low metallicities (7.8 < 12 + log(O/H) < 8.3) and star-formation rates < 10{-1} M_{sun}/yr. We measure the spectral energy distribution (SED) from 100 to 500 um and derive dust temperatures and dust masses. The SEDs are fitted by a cool component of temperature T < 20 K, implying dust masses around 10{5} M_{sun} and dust-to-gas ratios D within the range 10{-3}-10{-2}. The completion of the full survey will yield a larger set of galaxies, which will provide more stringent constraints on the dust content of star-forming dwarf galaxies.