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Date and Time of the Query: 2019-06-19 T05:11:24 PDT
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For refcode 2006AJ....131.2469H:
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Copyright by American Astronomical Society. Reproduced by permission
2006AJ....131.2469H Star Formation Histories of Nearby Elliptical Galaxies. II. Merger Remnant Sample Justin H. Howell Abstract. This work presents high signal-to-noise spectroscopic observations of a sample of six suspected merger remnants, selected primarily on the basis of H I tidal debris detections. Single stellar population analysis of these galaxies indicates that their ages, metallicities, and {alpha}-enhancement ratios are consistent with those of a representative sample of nearby elliptical galaxies. The expected stellar population of a recent merger remnant, a young age combined with low [{alpha}/Fe], is not seen in any H I -- selected galaxy. However, one galaxy (NGC 2534) is found to deviate from the Z-plane in the sense expected for a merger remnant. Another galaxy (NGC 7332), selected by other criteria, best matches the merger remnant expectations. Key words: Galaxies: Abundances, Galaxies: Elliptical and Lenticular, cD, Galaxies: Evolution, Galaxies: Formation, Galaxies: General, Galaxies: Interactions, Galaxies: Stellar Content
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