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Ultra-deep Keck/MOSFIRE spectroscopic observations of galaxies: direct oxygen abundances and nebular excitation properties
Leonardo Clarke, Alice Shapley, Ryan L. Sanders +6
Using deep near-infrared Keck/MOSFIRE observations, we analyze the rest-optical spectra of eight star-forming galaxies in the COSMOS and GOODS-N fields. We reach integration times…
Low Metallicity Galaxies from the Dark Energy Survey
Yu-Heng Lin, Claudia Scarlata, Vihang Mehta +6
We present a new selection of 358 blue compact dwarf galaxies (BCDs) from 5,000 square degrees in the Dark Energy Survey (DES), and the spectroscopic follow-up of a subsample of 68…
A Preview of JWST Metallicity Studies at Cosmic Noon: The First Detection of Auroral [O II] Emission at High Redshift
Ryan L. Sanders, Alice E. Shapley, Leonardo Clarke +6
We present ultra-deep Keck/MOSFIRE rest-optical spectra of two star-forming galaxies at z=2.18 in the COSMOS field with bright emission lines, representing more than 20~hours of to…
An old stellar population or diffuse nebular continuum emission discovered in green pea galaxies
Leonardo Clarke, Claudia Scarlata, Vihang Mehta +9
We use new HST images of nine Green Pea Galaxies (GPGs) to study their resolved structure and color. The choice of filters, F555W and F850LP, together with the redshift of the gala…