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Table · dataset · 2008

GOODS blue early-type galaxies

Listed in IVOA Registry (Virtual Observatory)

We present a study of the nature of the blue early-type galaxies (BEGs) in the GOODS North and South fields using the GOODS archival HST ACS data.

Description

Using visual inspection, we have selected 58 BEGs and 113 normal red early-type galaxies (REGs) in the sample of 1949 galaxies with spectroscopic redshifts. We find that the BEGs are generally bluer, fainter, and less massive than the REGs, although a few BEGs are exceptionally bright and massive.

The number fraction of BEGs to total early-type galaxies is almost constant (~0.3) at z<=1.1. In addition, we find that the sizes of the BEGs in a given redshift bin decrease as redshift decreases. The BEGs look similar to the REGs in the images and surface brightness profiles.

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Provenance · 1 source records, 8 field assertions
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IVOA Registry (Virtual Observatory)ivo://cds.vizier/j/apj/650/14814 d agoJSON v1
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concepts[field].local:field:astronomymapping · IVOA Registryconnector:ivoa_registry@1.0.0
concepts[modality].local:modality:imageenrichment · IVOA Registrykeyword-concept-rules@1.0.0title+description (65%)
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publication_datesource · IVOA Registryconnector:ivoa_registry@1.0.0
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