The galaxy population in the cluster Cl1409+524 (3C295)

Details The galaxy population in the cluster Cl1409+524 (3C295) The galaxy population in the cluster Cl1409+524 (3C295)

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...285..785t&link_type=abstract

Astronomy and Astrophysics 285, 785-800 (1994)

Astronomy and Astrophysics

Astrophysics

16

Clusters: Cl 1409+524 (3C 295), Galaxies: Evolution, Stars: Formation

Scientific paper

We observed the cluster Cl1409+524 (z=0.46) with an imaging Fabry-Perot interferometer. A sequence of Fabry-Perot images (FWHM=1.0-1.3nm) was used to search for redshifted [OII]λ372.7nm- and [OIII]λ500.7nm line emission. We studied 144 galaxies up to a limiting continuum R-band magnitude of 22.5mag within 1Mpc around the cluster center. Previously known emission-line galaxies in the cluster were confirmed and 17 new members with emission lines were found. Their star formation rate of 1-2Msun_yr^-1^ is typical for normal spirals. We have imaged the cluster with broad band B, R and seven intermediate band filters (FWHM=10.0-20.0nm) in order to derive low-resolution spectral energy distributions of cluster galaxies. These were fitted by template spectra to estimate Hubble class and redshifts. Based on this decomposition, we derived a percentage of emission-line galaxies of 40+/-11%.

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