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Preprint typeset using LATEX style emulateapj v. 2/19/04 M/L, Hα ROTATION CURVES, AND H I MEASUREMENTS FOR 329 NEARBY CLUSTER AND FIELD SPIRALS: I. DATA

By Nicole P. Vogt, Martha P. Haynes, Terry Herter and Riccardo Giovanelli

Abstract

A survey of 329 nearby galaxies (redshift z < 0.045) has been conducted to study the distribution of mass and light within spiral galaxies over a range of environments. The 18 observed clusters and groups span a range of richness, density, and X-ray temperature, and are supplemented by a set of 30 isolated field galaxies. Optical spectroscopy taken with the 200-inch Hale Telescope provides separately resolved Hα and [N II] major axis rotation curves for the complete set of galaxies, which are analyzed to yield velocity widths and profile shapes, extents and gradients. H I line profiles provide an independent velocity width measurement and a measure of H I gas mass and distribution. I-band images are used to deconvolve profiles into disk and bulge components, to determine global luminosities and ellipticities, and to check morphological classification. These data are combined to form a unified data set ideal for the study of the effects of environment upon galaxy evolution

Year: 2004
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