2004/02/29 by Nicole P. Vogt, Martha P. Haynes, T. Herter +2 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/420701
published as Astron.J. 127 (2004) 3273-3329 · 23 pages, 16 figures.; accepted for publication in AJ; higher-resolution figures available at http://astronomy.nmsu.edu/nicole; typo corrected in figure captions 14 - 16 (x-axes units are kpc/h, not arcseconds)
arxiv created 2004/03/01 · openalex publication_date 2004/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 (5 m) 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.