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Possible Local Spiral Counterparts to Compact Blue Galaxies at Intermediate Redshift

Elizabeth J. Barton·Liese van Zee
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Abstract

We identify nearby disk galaxies with optical structural parameters similar to those of intermediate-redshift compact blue galaxies. By comparing HI and optical emission-line widths, we show that the optical widths substantially underestimate the true kinematic widths of the local galaxies. By analogy, optical emission-line widths may underrepresent the masses of intermediate-z compact objects. For the nearby galaxies, the compact blue morphology is the result of tidally-triggered central star formation: we argue that interactions and minor mergers may cause apparently compact morphology at higher redshift.

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Elizabeth J. Barton, Liese van Zee. 2001-02-12. Possible Local Spiral Counterparts to Compact Blue Galaxies at Intermediate Redshift. https://doi.org/10.1086/319495

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