Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21913101t&link_type=abstract
American Astronomical Society, AAS Meeting #219, #131.01
Astronomy and Astrophysics
Astronomy
Scientific paper
Rest-frame optical spectra contain a wealth of information about galaxy properties. In particular, the strengths and ratios between collisionally excited and recombination emission lines can be used to distinguish between star formation, shocks, and supermassive black hole accretion. The new HST/WFC3 near-IR slitless grism opens up a new realm for large studies of emission-line galaxies at z>1.5. We use CANDELS WFC3 grism observations to show that low-mass (log(M*/Msun) 9.5) galaxies at z 2 have emission line gradients suggestive of nuclear activity. We additionally combine CANDELS WFC3 grism spectroscopy with multiwavelength photometry and optical spectroscopy from AEGIS/DEEP and COSMOS to study the effectiveness of a full suite of emission line strengths and ratios in characterizing star formation, shocks, and nuclear activity in galaxies from 0
Faber Sandra M.
Kocevski Dale D.
Koo David C.
Trump Jonathan R.
Weiner Benjamin J.
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