The Herschel Virgo Cluster Survey* V. Star-forming dwarf galaxies – dust in metal-poor environments [Letter]
- 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, Luca
- Dariush, Aliakbar
- Davies, Jonathan Ivor
- De Looze, I.
- di Serego Alighieri, S.
- Fadda, D.
- Fritz, J.
- Garcia-Appadoo, D. A.
- Gavazzi, G.
- Giovanardi, C.
- Hughes, Thomas Marcus
- Jones, A. P.
- Pierini, D.
- Pohlen, Michael
- Sabatini, S.
- Smith, Matthew William L.
- Verstappen, J.
- Xilouris, E. M.
- Zibetti, S.
DOIAbstract
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 yr-1. We measure the spectral energy distribution (SED) from 100 to 500 μm and derive dust temperatures and dust masses. The SEDs are fitted by a cool component of temperature T ≲ 20 K, implying dust masses around 105 and dust-to-gas ratios 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
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