Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21940606w&link_type=abstract
American Astronomical Society, AAS Meeting #219, #406.06
Astronomy and Astrophysics
Astronomy
Scientific paper
The CANDELS survey takes slitless grism spectroscopy with HST's WFC3-IR to follow up high-redshift supernovae discovered in CANDELS photometry. These deep grism exposures yield spectra for many galaxies in each pointing, in addition to the SN and its host. They complement shallower IR grism surveys by independent programs that cover most of the CANDELS area. HST IR grism data yields low-resolution spectra at 1-1.6 microns for most galaxies in the field of view. The low background and multiplex advantage make it an extremely powerful probe of galaxies at z=1-3. We present several science programs by CANDELS members with infrared grism spectra, including: the properties of extreme high-EW emission-line galaxies at z=1.8; low-metallicity galaxies and low-luminosity AGN at z=2; extinction and star formation rate measurements from IR detections of H-alpha at z 1; the spatial distribution of star formation in galaxies, measured at HST's high spatial resolution; and restframe optical continuum spectroscopy at z 2.
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