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For refcode 1989MNRAS.239..347D:
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Copyright by Royal Astronomical Society. 1989MNRAS.239..347D Dust deficiency in Virgo spirals Rene Doyon and R. D. Joseph Astrophysics Group, Blackett Laboratory, Imperial College, London SW7 2BZ. Accepted 1989 January 27. Received 1989 January 27; in original form 1988 September 20 Summary. The results of an analysis of far-infrared (FIR) and 21-cm data for a sample of 102 spiral galaxies in the Virgo cluster are presented. We show that H I deficient galaxies have lower 60- and 100-{micron}m fluxes and cooler far-infrared colour temperatures than those with normal H I content. No reasonable selection or systematic effect can account for these variations. We interpret these results in the context of a two-component model for the far-infrared emission: a warm component associated with star formation and H II regions, and a cool 'cirrus-like' component of dust heated by the interstellar radiation field. We find that, for a typical spiral in the core of the cluster, at least half of the diffuse dust has been stripped and the star formation activity suppressed by a factor of 3, compared to normal field galaxies. The dust stripping confirms the presence of a diffuse dust component in Virgo spirals and the validity of current models for the FIR emission in spiral galaxies.
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