A Magnified View Of Star Formation At z=0.9 From Two Lensed Galaxies

Details A Magnified View Of Star Formation At z=0.9 From Two Lensed Galaxies A Magnified View Of Star Formation At z=0.9 From Two Lensed Galaxies

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924623o&link_type=abstract

American Astronomical Society, AAS Meeting #219, #246.23

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new narrow-band Hα imaging from the Hubble Space Telescope of two z=0.91 galaxies that have been lensed by foreground galaxy cluster Abell 2390. These data provide a magnified look at the morphology of star formation at an epoch when the global star formation rate was still high. From the continuum subtracted Hα image, we characterize the morphology of star formation in the source plane, using techniques commonly applied to local galaxies, but not possible for distant galaxies unless lensed. We compare the distribution of star formation as traced by Hα to the broad-band colors from filters at 555, 814, and 1250 nm. Finally, we compare the star formation rates measured three different ways: from Hα, from the mid-IR [Ne II] and [Ne II] lines, and from the mid- to far-infrared spectral energy distributions.

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