The Herschel Virgo Cluster Survey V. Star-forming dwarf galaxies - dust in metal-poor environments
- Grossi, M.
- Hunt, L. K.
- Madden, S.
- Vlahakis, C.
- Bomans, D. J.
- Baes, M.
- Bendo, G. J.
- Bianchi, S.
- Boselli, A.
- Clemens, M.
- Corbelli, E.
- Cortese, L.
- Dariush, A.
- Davies, J. I.
- de Looze, I.
- Alighieri, S. Di Serego
- Fadda, D.
- Fritz, J.
- Garcia-Appadoo, D. A.
- Gavazzi, G.
- Giovanardi, C.
- Hughes, T. M.
- Jones, A. P.
- Pierini, D.
- Pohlen, M.
- Sabatini, S.
- Smith, M. W. L.
- Verstappen, J.
- Xilouris, E. M.
- Zibetti, S.
DOIAbstract
International audienceWe 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 \textless 12 + log(O/H) \textless 8.3) and star-formation rates \textless= 10(-1) M-circle dot yr(-1). We measure the spectral energy distribution (SED) from 100 to 500 mu m and derive dust temperatures and dust masses. The SEDs are fitted by a cool component of temperature T \textless= 20 K, implying dust masses around 10(5) M-circle dot 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...
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