Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 378, Issue 1, Pages L6-L10Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1745-3933.2007.00307.x
Keywords
galaxies : clusters : general; galaxies : evolution; galaxies : spiral
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We examine how the location of star formation within disc galaxies depends on environment at intermediate redshift. This is achieved by comparing emission-line (r(em)) and rest-frame B-band (r(B)) scalelengths for matched samples of 50 field and 19 cluster, star-forming, disc galaxies, with 0.25 <= z <= 1.0 and M-B <= -19.5 mag. We find that a given r(B) the majority of our cluster galazies have r(em) smaller than those in the field, by 25 per cent on average. These results are compared with studies of local galaxies, which find a very similar behaviour. from the realations of r(em) and r(B) versus B-band absolute magnitude (M-B) we infer that the difference between the intermediate-z cluster and field samples is mostly attributable to variation in r(em) at a given M-B, while th r(B) versus M-B relation is similar for the two samples.
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