Studying distant dwarf galaxies with GEMS and SDSS

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dc.creatorBarazza, Fabio D.
dc.creatorJogee, Shardha
dc.creatorRix, Hans-Walter
dc.creatorBarden, Marco
dc.creatorBell, Eric F.
dc.creatorCaldwell, John A. R.
dc.creatorMcIntosh, Daniel H.
dc.creatorMeisenheimer, Klaus
dc.creatorPeng, Chien Y.
dc.creatorWolf, Christian
dc.date2005-12-12
dc.date.accessioned2026-07-07T06:49:06Z
dc.date.available2026-07-07T06:49:06Z
dc.descriptionWe study the colors, structural properties, and star formation histories of a sample of ~1600 dwarfs over look-back times of ~3 Gyr (z=0.002-0.25). The sample consists of 401 distant dwarfs drawn from the Galaxy Evolution from Morphologies and SEDs (GEMS) survey, which provides high resolution Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) images and accurate redshifts, and of 1291 dwarfs at 10-90 Mpc compiled from the Sloan Digitized Sky Survey (SDSS). We find that the GEMS dwarfs are bluer than the SDSS dwarfs, which is consistent with star formation histories involving starbursts and periods of continuous star formation. The full range of colors cannot be reproduced by single starbursts or constant star formation alone. We derive the star formation rates of the GEMS dwarfs and estimate the mechanical luminosities needed for a complete removal of their gas. We find that a large fraction of luminous dwarfs are likely to retain their gas, whereas fainter dwarfs are susceptible to a significant gas loss, if they would experience a starburst.
dc.description4 pages, proceedings for the Frank N. Bash Symposium 2005, to appear in the ASP Conference Series eds. S. Kannappan, S. Redfield, N. Drory, J. Kessler-Silacci, M. Landriau
dc.identifierhttps://arxiv.org/abs/astro-ph/0512307
dc.identifierhttp://arxiv.org/abs/astro-ph/0512307
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/104212
dc.subjectAstrophysics
dc.titleStudying distant dwarf galaxies with GEMS and SDSS
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