Journal article
The Grism Lens-amplified Survey from Space (GLASS). XII. Spatially Resolved Galaxy Star Formation Histories and True Evolutionary Paths at z > 1
LE Abramson, AB Newman, T Treu, KH Huang, T Morishita, X Wang, A Hoag, KB Schmidt, CA Mason, M Bradač, GB Brammer, A Dressler, BM Poggianti, M Trenti, B Vulcani
Astronomical Journal | IOP PUBLISHING LTD | Published : 2018
Abstract
Modern data empower observers to describe galaxies as the spatially and biographically complex objects they are. We illustrate this through case studies of four z ∼ 1.3 systems based on deep, spatially resolved, 17-band + G102 + G141 Hubble Space Telescope grism spectrophotometry. Using full-spectrum rest-UV/-optical continuum fitting, we characterize these galaxies' observed ∼kpc-scale structures and star formation rates (SFRs) and reconstruct their history over the age of the universe. The sample's diversity - passive to vigorously star-forming; stellar masses log / = 10.5 to 11.2 - enables us to draw spatiotemporal inferences relevant to key areas of parameter space (Milky Way- to super-M..
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Awarded by National Aeronautics and Space Administration
Funding Acknowledgements
LEA thanks D. Kelson, J. Mirocha, and S. Birrer for their tolerance during many enlightening conversations. The same goes for L. Young, who illuminated key longitudinal/cross-sectional distinctions underpinning this work, and M. Gladders, whose ideas were central to it. We also thank the anonymous referee for helpful and incisive comments. BV acknowledges support from an Australian Research Council Discovery Early Career Researcher Award (PD0028506). GLASS (HST GO-13459) is supported by NASA through a grant from STScI operated by AURA under contract NAS 5-26555. This work uses gravitational-lensing models by PIs Bradac Natarajan & Kneib (CATS), Merten & Zitrin, Sharon, Williams, Keeton, Bernstein & Diego, and the GLAFIC group. Lens modeling was partially funded by STScI's HST Frontier Fields program; models were obtained from the Mikulski Archive for Space Telescopes (MAST).