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Massive Dead Galaxies at z~2 with HST Grism Spectroscopy I. Star Formation Histories and Metallicity Enrichment
T. Morishita, L. E. Abramson, T. Treu +7
Observations have revealed massive (logM*/Msun>11) galaxies that were already dead when the universe was only ~2 Gyr. Given the short time before these galaxies were quenched, thei…
The OSIRIS Lens-Amplified Survey (OLAS) I: Dynamical Effects of Stellar Feedback in Low Mass Galaxies at z ~ 2
Jessie Hirtenstein, Tucker Jones, Xin Wang +6
We introduce the OSIRIS Lens-Amplified Survey (OLAS), a kinematic survey of gravitationally lensed galaxies at cosmic noon taken with Keck adaptive optics. In this paper we present…
The bright-end galaxy candidates at z ~ 9 from 79 independent HST fields
T. Morishita, M. Trenti, M. Stiavelli +11
We present a full data analysis of the pure-parallel Hubble Space Telescope (HST) imaging observations in the Brightest of Reionizing Galaxies Survey (BoRG[z9]) in Cycle 22. The me…
Discovery of Strongly Inverted Metallicity Gradients in Dwarf Galaxies at 2
Xin Wang, Tucker A. Jones, Tommaso Treu +12
We report the first sub-kiloparsec spatial resolution measurements of strongly inverted gas-phase metallicity gradients in two dwarf galaxies at 2. The galaxies have stell…
Mass Modeling of Frontier Fields Cluster MACS J1149.5+2223 Using Strong and Weak Lensing
Emily Quinn Finney, Maruša Bradač, Kuang-Han Huang +8
We present a gravitational lensing model of MACS J1149.5+2223 using ultra-deep Hubble Frontier Fields imaging data and spectroscopic redshifts from HST grism and VLT/MUSE spectrosc…
Metal Deficiency in Two Massive Dead Galaxies at
T. Morishita, L. E. Abramson, T. Treu +8
Local massive early-type galaxies are believed to have completed most of their star formation Gyr ago and evolved without having substantial star formation since. If so, th…