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For refcode 1998ApJS..116....1T:
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1998ApJS..116....1T Old Stellar Populations. VI. Absorption-Line Spectra of Galaxy Nuclei and Globular Clusters S. C. TRAGER UCO/Lick Observatory and Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA 95064; sctrager@ociw.edu GUY WORTHEY Astronomy Department, University of Michigan, Ann Arbor, MI 48109-1090; worthey@saunix.sau.edu S. M. FABER UCO/Lick Observatory and Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA 95064; faber@ucolick.org DAVID BURSTEIN Department of Physics and Astronomy, Arizona State University, Tempe, AZ 58287-1504; burstein@samuri.la.asu.edu AND J. JESUS GONZALEZ Instituto de Astronomia-UNAM, Apdo. Postal 70-264, Mexico D.F., Mexico; jesus@astroscu.unam.mx Received 1997 September 19; accepted 1997 December 15 ABSTRACT We present absorption-line strengths on the Lick/IDS line-strength system of 381 galaxies and 38 globular clusters in the 4000-6400 A region. All galaxies were observed at Lick Observatory between 1972 and 1984 with the Cassegrain Image Dissector Scanner spectrograph, which makes this study one of the largest homogeneous collections of galaxy spectral line data to date. We also present a catalog of nuclear velocity dispersions used to correct the absorption-line strengths onto the stellar Lick/IDS system. Extensive discussion of both random and systematic errors of the Lick/IDS system is provided. Indices are seen to fall into three families: {alpha}- element-like indices (including CN, Mg, Na D, and TiO2) that correlate positively with velocity dispersion; Fe-like indices (including Ca, the G band, TiO1, and all Fe indices) that correlate only weakly with velocity dispersion and the {alpha} indices; and H {beta} that anticorrelates with both velocity dispersion and the {alpha} indices. C24668 seems to be intermediate between the {alpha} and Fe groups. These groupings probably represent different element abundance families with different nucleosynthesis histories. Subject headings: galaxies: abundances-galaxies: nuclei-galaxies: star clusters-galaxies: stellar content
Retrieve 435 NED objects in this reference.
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