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Recent star formation in nearby galaxies from GALEX imaging:M101 and M51
- Source :
- The Astrophysical journal letters, The Astrophysical journal letters, Bristol : IOP Publishing, 2005, 619, pp.L71-L74, The Astrophysical journal letters, 2005, 619, pp.L71-L74
- Publication Year :
- 2005
- Publisher :
- HAL CCSD, 2005.
-
Abstract
- The GALEX (Galaxy Evolution Explorer) Nearby Galaxies Survey is providing deep far-UV and near-UV imaging for a representative sample of galaxies in the local universe. We present early results for M51 and M101, from GALEX UV imaging and SDSS optical data in five bands. The multi-band photometry of compact stellar complexes in M101 is compared to population synthesis models, to derive ages, reddening, reddening-corrected luminosities and current/initial masses. The GALEX UV photometry provides a complete census of young compact complexes on a approximately 160pc scale. A galactocentric gradient of the far-UV - near-UV color indicates younger stellar populations towards the outer parts of the galaxy disks, the effect being more pronounced in M101 than in M51.<br />Comment: This paper will be published as part of the Galaxy Evolution Explorer (GALEX) Astrophysical Journal Letters Special Issue. Full paper available from http://dolomiti.pha.jhu.edu . Links to full set of papers will be available at http://www.galex.caltech.edu/PUBLICATIONS/ after November 22, 2004
Details
- Language :
- English
- ISSN :
- 20418205 and 20418213
- Database :
- OpenAIRE
- Journal :
- The Astrophysical journal letters, The Astrophysical journal letters, Bristol : IOP Publishing, 2005, 619, pp.L71-L74, The Astrophysical journal letters, 2005, 619, pp.L71-L74
- Accession number :
- edsair.doi.dedup.....ef5c512e63a89abbd45774ce5006778a