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The Herschel Virgo Cluster Survey. VII. Dust in cluster dwarf elliptical galaxies

De Looze, I. and Fadda, D. (2010) The Herschel Virgo Cluster Survey. VII. Dust in cluster dwarf elliptical galaxies. Astronomy and Astrophysics, 518 . Art. No. L54. ISSN 0004-6361.

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We use the science demonstration phase data of the Herschel Virgo Cluster Survey to search for dust emission of early-type dwarf galaxies in the central regions of the Virgo cluster as an alternative way of identifying the interstellar medium. We present the first possible far-infrared detection of cluster early-type dwarf galaxies: VCC781 and VCC951 are detected at the 10σ level in the SPIRE 250 μm image. Both detected galaxies have dust masses of the order of 10^5 M_⊙ and average dust temperatures ≈20 K. The detection rate (less than 1%) is quite high compared to the 1.7% detection rate for Hi emission, considering that dwarfs in the central regions are more Hi deficient. We conclude that the removal of interstellar dust from dwarf galaxies resulting from ram pressure stripping, harassment, or tidal effects must be as efficient as the removal of interstellar gas.

Item Type:Article
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Fadda, D.0000-0002-3698-7076
Additional Information:© 2010 ESO. Received 31 March 2010, Accepted 21 April 2010, Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Subject Keywords:galaxies: dwarf, galaxies: individual: VCC781, galaxies: individual: VCC951, galaxies: ISM, dust, extinction
Record Number:CaltechAUTHORS:20101201-105220124
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Official Citation:The Herschel Virgo Cluster Survey - VII. Dust in cluster dwarf elliptical galaxies I. De Looze, M. Baes, S. Zibetti, J. Fritz, L. Cortese, J. I. Davies, J. Verstappen, G. J. Bendo, S. Bianchi, M. Clemens, D. J. Bomans, A. Boselli, E. Corbelli, A. Dariush, S. di Serego Alighieri, D. Fadda, D. A. Garcia-Appadoo, G. Gavazzi, C. Giovanardi, M. Grossi, T. M. Hughes, L. K. Hunt, A. P. Jones, S. Madden, D. Pierini, M. Pohlen, S. Sabatini, M. W. L. Smith, C. Vlahakis and E. M. Xilouris A&A 518 L54 (2010) DOI: 10.1051/0004-6361/201014647
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21096
Deposited By: Benjamin Perez
Deposited On:01 Dec 2010 19:05
Last Modified:09 Mar 2020 13:18

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