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Spectra of Cluster Galaxies at z~0.4

Bianca M. Poggianti
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Abstract

The ``MORPHS'' group has obtained an extensive spectroscopic dataset of galaxies in the fields of 10 rich clusters at $0.37<z<0.56$; the stellar population properties of about 700 objects have been determined from a detailed analysis of spectral line strenghts and colours, up to a galactic absolute magnitude $M_V=-20.3$ mag. Morphological informations for a consistent fraction of our sample have been previously derived from deep images of the central regions of these clusters taken with the WFPC-2 on board the HST. Spectral and morphological features can be compared in order to study the star formation histories of the different galactic types in clusters; here we show some preliminary results of this comparison.

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Bianca M. Poggianti. 1997-12-02. Spectra of Cluster Galaxies at z~0.4. https://arxiv.org/abs/astro-ph/9712034

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