2008•AIP conference proceedingsRequires access
VLA Observations and Tully-Fisher Distances of Gas-poor Spiral Galaxies in the Virgo Cluster Region
M. C. Toribio, Robert Minchin, Emmanuel Momjian
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Abstract
We present the preliminary results of our high‐sensitivity, high‐resolution Very Large Array observations in the 21 cm line of fields centered on the Virgo cluster region spirals NGC 4307, NGC 4356, NGC 4411B, and NGC 4492. The selected targets are part of a subset of spiral galaxies identified in a previous statistical study of the three‐dimensional distribution of the atomic hydrogen in this region of the sky, as objects with a substantial dearth of HI that apparently reside on the cluster outskirts. Our VLA measurements have been used to emphasize the substantial uncertainties affecting the Tully‐Fisher radial distance estimates to these objects.