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The Herschel Virgo Cluster Survey: II. Truncated dust disks in HI-deficient spirals

L. Cortese, J. Davies, M. Pohlen, M. Baes, G. J. Bendo, S. Bianchi, A. Boselli, I. De Looze, J. Fritz, J. Verstappen, D. J. Bomans, M. Clemens, E. Corbelli, A. Dariush, S. Di Serego Alighieri, D. Fadda, D. A. Garcia-Appadoo, G. Gavazzi, C. Giovanardi, M. Grossi, T. Hughes, L. K. Hunt, A. Jones, S. C. Madden, D. Pierini, S. Sabatini, M. W. L. Smith, C. Vlahakis, E. M. Xilouris, S. Zibetti

By combining Herschel-SPIRE observations obtained as part of the Herschel Virgo Cluster Survey with 21 cm Hi data from the literature, we investigate the role of the cluster environment on the dust content of Virgo spiral galaxies. We show for the first time that the extent of the dust disk is significantly reduced in Hi-deficient galaxies, following remarkably well the observed ``truncation' of the Hi disk. The ratio of the submillimetre-to-optical diameter correlates with the Hi-deficiency, suggesting that the cluster environment is able to strip dust as well as gas. These results provide important insights not only into the evolution of cluster galaxies but also into the metal enrichment of the intra-cluster medium. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

galaxies: evolution – galaxies: clusters: individual: Virgo – infrared: galaxies – dust - extinction

Astronomy & Astrophysics
Volume 518, Number of pages L49_1
2010 July

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia