Gas Geometry And Dust Content In Z=0.3 Lyman-alpha Emitters

Details Gas Geometry And Dust Content In Z=0.3 Lyman-alpha Emitters Gas Geometry And Dust Content In Z=0.3 Lyman-alpha Emitters

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21530702s&link_type=abstract

American Astronomical Society, AAS Meeting #215, #307.02; Bulletin of the American Astronomical Society, Vol. 42, p.304

Astronomy and Astrophysics

Astronomy

Scientific paper

The mechanisms regulating the Lyman-alpha (Lya) output of galaxies are still poorly understood. We have an ongoing project to followup a sample of z=0.3 GALEX-selected Lya emitters, to derive their physical properties, using observations in a broad wavelength range. We find that 17% of the z=0.3 GALEX Lya emitters are AGN. We constrain the geometry of the dusty gas by comparing the Lya/Ha and Hb/Ha ratios. We find that the dust is distributed in clumps, and that line photons (both Lya and Balmer lines) mostly escape through clean line of sights.

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