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The scaling relation of early-type galaxies in clusters. II: Spectroscopic data for galaxies in eight nearby clusters by Bettoni, D.; Moles, M.; Kjaergaard, P.; Fasano, G.; Varela, J. is a scholarly article available to read on EtoBox.

What is The scaling relation of early-type galaxies in clusters. II: Spectroscopic data for galaxies in eight nearby clusters about?

AIMS: We present in this work low and intermediate resolution spectroscopic data collected for 152 early type galaxies in 8 nearby clusters with z $\leq$ 0.10. METHODS: We use low resolution data to produce the redshift and the K-correction for every individual galaxy, as well as to give their overall spectral energy distribution, and some spectral indicators, including the 4000\AA break, the Mg$_2$ strength, and the NaD equivalent width.We have also obtained higher resolution data for early type galaxies in three of the clusters, to determine their central velocity dispersion. RESULTS: The effect of the resolution on the measured parameters is discussed. CONCLUSIONS: New accurate systemic redshift and velocity dispersion is presented for four of the surveyed clusters, A98, A3125, A3330, and DC2103-39. We have found that the K-correction values for E/S0 bright galaxies in a given nearby clusters are very similar. We also find that the distribution of the line indicators significantly differ from cluster to cluster.

Author

Bettoni, D.; Moles, M.; Kjaergaard, P.; Fasano, G.; Varela, J.

Published

2006

Language

EN