NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-23 T14:36:31 PDT
Help | Comment | NED Home

For refcode 2012ApJ...759...77M:
Retrieve 15 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2012ApJ...759...77M The Nature of Starbursts. III. The Spatial Distribution of Star Formation McQuinn, Kristen B. W.; Skillman, Evan D.; Dalcanton, Julianne J.; Cannon, John M.; Dolphin, Andrew E.; Holtzman, Jon; Weisz, Daniel R.; Williams, Benjamin F. Abstract. We map the spatial distribution of recent star formation over a few x 100 Myr timescales in 15 starburst dwarf galaxies using the location of young blue helium burning stars identified from optically resolved stellar populations in archival Hubble Space Telescope observations. By comparing the star formation histories from both the high surface brightness central regions and the diffuse outer regions, we measure the degree to which the star formation has been centrally concentrated during the galaxies' starbursts, using three different metrics for the spatial concentration. We find that the galaxies span a full range in spatial concentration, from highly centralized to broadly distributed star formation. Since most starbursts have historically been identified by relatively short timescale star formation tracers (e.g., Halpha emission), there could be a strong bias toward classifying only those galaxies with recent, centralized star formation as starbursts, while missing starbursts that are spatially distributed. Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the Data Archive at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. Key words: galaxies: dwarf, galaxies: evolution, galaxies: starburst
Retrieve 15 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home