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The Herschel Virgo Cluster Survey - VII. Dust in cluster dwarf elliptical galaxies [Letter]

De Looze, I., Baes, Maarten, Zibetti, S., Fritz, J., Cortese, Luca, Davies, Jonathan Ivor, Verstappen, J., Bendo, George J., Bianchi, S., Clemens, M., Bomans, D. J., Boselli, A., Corbelli, E., Dariush, Aliakbar, di Serego Alighieri, S., Fadda, D., Garcia-Appadoo, D. A., Gavazzi, G., Giovanardi, C., Grossi, M., Hughes, Thomas Marcus, Hunt, L. K., Jones, A. P., Madden, S., Pierini, D., Pohlen, Michael, Sabatini, Sabina, Smith, Matthew William L., Vlahakis, C. and Xilouris, E. M. 2010. The Herschel Virgo Cluster Survey - VII. Dust in cluster dwarf elliptical galaxies [Letter]. Astronomy & Astrophysics 518 , L54. 10.1051/0004-6361/201014647

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Abstract

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: VCC 781 and VCC 951 are detected at the 10σ level in the SPIRE 250 μm image. Both detected galaxies have dust masses of the order of 105 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
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: galaxies: dwarf ; galaxies: individual: VCC 781 ; galaxies: individual: VCC 951 ; galaxies: ISM ; dust, extinction
Additional Information: Letter to the editor. Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0004-6361/ (accessed 16/04/2014)
Publisher: EDP Sciences
ISSN: 0004-6361
Date of First Compliant Deposit: 30 March 2016
Last Modified: 09 Apr 2019 20:47
URI: http://orca.cf.ac.uk/id/eprint/32726

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