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27 April 2024

» arxiv » 1005.2331

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Herschel-SPIRE observations of the disturbed galaxy NGC4438
L. Cortese ; G. J. Bendo ; A. Boselli ; J. I. Davies ; H. L. Gomez ; M. Pohlen ; R. Auld ; M. Baes ; J. J. Bock ; M. Bradford ; V. Buat ; N. Castro-Rodriguez ; P. Chanial ; S. Charlot ; L. Ciesla ; D. L. Clements ; A. Cooray ; D. Cormier ; E. Dwek ; S. A. Eales ; D. Elbaz ; M. Galametz ; F. Galliano ; W. K. Gear ; J. Glenn ; M. Griffin ; S. Hony ; K. G. Isaak ; L. R. Levenson ; N. Lu ; S. Madden ; B. O'Halloran ; K. Okumura ; S. Oliver ; M. J. Page ; P. Panuzzo ; A. Papageorgiou ; T. J. Parkin ; I. Perez-Fournon ; N. Rangwala ; E. E. Rigby ; H. Roussel ; A. Rykala ; N. Sacchi ; M. Sauvage ; B. Schulz ; M. R. P. Schirm ; M. W. L. Smith ; L. Spinoglio ; J. A. Stevens ; S. Srinivasan ; M. Symeonidis ; M. Trichas ; M. Vaccari ; L. Vigroux ; C. D. Wilson ; H. Wozniak ; G. S. Wright ; W. W. Zeilinger ;
Date:	13 May 2010
Abstract:	We present Herschel-SPIRE observations of the perturbed galaxy NGC4438 in the Virgo cluster. These images reveal the presence of extra-planar dust up to ~4-5 kpc away from the galaxy’s disk. The dust closely follows the distribution of the stripped atomic and molecular hydrogen, supporting the idea that gas and dust are perturbed in a similar fashion by the cluster environment. Interestingly, the extra-planar dust lacks a warm temperature component when compared to the material still present in the disk, explaining why it was missed by previous far-infrared investigations. Our study provides evidence for dust stripping in clusters of galaxies and illustrates the potential of Herschel data for our understanding of environmental effects on galaxy evolution.
Source:	arXiv, 1005.2331
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