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Probing dark matter substructure in the gravitational lens HE0435-1223 with the WFC3 grism
A. M. Nierenberg, T. Treu, G. Brammer +7
Strong gravitational lensing provides a powerful test of Cold Dark Matter (CDM) as it enables the detection and mass measurement of low mass haloes even if they do not contain bary…
SN Refsdal : Photometry and Time Delay Measurements of the First Einstein Cross Supernova
S. A. Rodney, L. -G. Strolger, P. L. Kelly +16
We present the first year of Hubble Space Telescope imaging of the unique supernova (SN) 'Refsdal', a gravitationally lensed SN at z=1.4880.001 with multiple images behind the…
Multiple Images of a Highly Magnified Supernova Formed by an Early-Type Cluster Galaxy Lens
Patrick L. Kelly, Steven A. Rodney, Tommaso Treu +28
In 1964, Refsdal hypothesized that a supernova whose light traversed multiple paths around a strong gravitational lens could be used to measure the rate of cosmic expansion. We rep…
Observations of environmental quenching in groups in the 11 Gyr since z=2.5: different quenching for central and satellite galaxies
Tomer Tal, Avishai Dekel, Pascal Oesch +16
We present direct observational evidence for star formation quenching in galaxy groups in the redshift range 0<z<2.5. We utilize a large sample of nearly 6000 groups, selected by f…
Exploring the chemical link between local ellipticals and their high-redshift progenitors
Joel Leja, Pieter G. van Dokkum, Ivelina Momcheva +12
We present Keck/MOSFIRE K-band spectroscopy of the first mass-selected sample of galaxies at . Targets are selected from the 3D-HST Treasury survey. The six detected gala…
Confirmation of Small Dynamical and Stellar Masses for Extreme Emission Line Galaxies at z~2
Michael V. Maseda, Arjen van der Wel, Elisabete da Cunha +21
Spectroscopic observations from the Large Binocular Telescope and the Very Large Telescope reveal kinematically narrow lines (~50 km/s) for a sample of 14 Extreme Emission Line Gal…
A CANDELS - 3D-HST Synergy: Resolved Star Formation Patterns at 0.7 < z < 1.5
Stijn Wuyts, Natascha M. Forster Schreiber, Erica J. Nelson +20
We analyze the resolved stellar populations of 473 massive star-forming galaxies at 0.7 < z < 1.5, with multi-wavelength broad-band imaging from CANDELS and Halpha surface brightne…
Direct measurements of dust attenuation in z~1.5 star-forming galaxies from 3D-HST: Implications for dust geometry and star formation rates
Sedona H. Price, Mariska Kriek, Gabriel B. Brammer +11
The nature of dust in distant galaxies is not well understood, and until recently few direct dust measurements have been possible. We investigate dust in distant star-forming galax…
A spectroscopic sample of massive, evolved z~2 galaxies: Implications for the evolution of the mass-size relation
Jens-Kristian Krogager, Andrew W. Zirm, Sune Toft +2
We present deep, near-infrared HST/WFC3 grism spectroscopy and imaging for a sample of 14 galaxies at z~2 selected from a mass-complete photometric catalog in the COSMOS field. By…
Galaxy Stellar Mass Functions from ZFOURGE/CANDELS: An Excess of Low-Mass Galaxies Since z=2 and the Rapid Buildup of Quiescent Galaxies
Adam R. Tomczak, Ryan F. Quadri, Kim-Vy H. Tran +16
Using observations from the FourStar Galaxy Evolution Survey (ZFOURGE), we obtain the deepest measurements to date of the galaxy stellar mass function at 0.5 < z < 2.5. ZFOURGE pro…
Quiescent Galaxies in the 3D-HST Survey: Spectroscopic Confirmation of a Large Number of Galaxies with Relatively Old Stellar Populations at z~2
Katherine E. Whitaker, Pieter G. van Dokkum, Gabriel Brammer +10
Quiescent galaxies at z~2 have been identified in large numbers based on rest-frame colors, but only a small number of these galaxies have been spectroscopically confirmed to show…
3D-HST Data Release v3.0: Extremely Deep Spectra in the UDF and WFC3 Mosaics in the 3D-HST/CANDELS Fields
Pieter van Dokkum, Gabriel Brammer, Ivelina Momcheva +2
3D-HST is a 248-orbit Treasury program to provide WFC3 and ACS grism spectroscopy over four extra-galactic fields (AEGIS, COSMOS, GOODS-South, and UDS), augmented with previously o…
The Structural Evolution of Milky Way-like Star Forming Galaxies since z~1.3
Shannon G. Patel, Mattia Fumagalli, Marijn Franx +14
We follow the structural evolution of star forming galaxies (SFGs) like the Milky Way by selecting progenitors to z~1.3 based on the stellar mass growth inferred from the evolution…
The Assembly of Milky Way-like Galaxies Since z~2.5
Pieter G. van Dokkum, Joel Leja, Erica June Nelson +16
Galaxies with the mass of the Milky Way dominate the stellar mass density of the Universe but it is uncertain how and when they were assembled. Here we study progenitors of these g…
The Spatial Extent and Distribution of Star Formation in 3D-HST Mergers at z~1.5
Kasper B. Schmidt, Hans-Walter Rix, Elisabete da Cunha +14
We present an analysis of the spatial distribution of star formation in a sample of 60 visually identified galaxy merger candidates at z>1. Our sample, drawn from the 3D-HST survey…
A Public Ks-selected Catalog in the COSMOS/UltraVISTA Field: Photometry, Photometric Redshifts and Stellar Population Parameters
Adam Muzzin, Danilo Marchesini, Mauro Stefanon +7
We present a catalog covering 1.62 deg^2 of the COSMOS/UltraVISTA field with PSF-matched photometry in 30 photometric bands. The catalog covers the wavelength range 0.15um - 24um i…
The Evolution of the Stellar Mass Functions of Star-Forming and Quiescent Galaxies to z = 4 from the COSMOS/UltraVISTA Survey
Adam Muzzin, Danilo Marchesini, Mauro Stefanon +8
We present measurements of the stellar mass functions (SMFs) of star-forming and quiescent galaxies to z = 4 using a sample of 95 675 galaxies in the COSMOS/UltraVISTA field. Sourc…
What Are the Progenitors of Compact, Massive, Quiescent Galaxies at z=2.3? The Population of Massive Galaxies at z>3 from NMBS and CANDELS
Mauro Stefanon, Danilo Marchesini, Gregory H. Rudnick +2
[Abridged] Using public data from the NMBS and CANDELS surveys, we study the population of massive galaxies at z>3 to identify the potential progenitors of z~2 compact, massive, qu…
A Tentative Detection of an Emission Line at 1.6 μm for the z~12 Candidate UDFj-39546284
Gabriel B. Brammer, Pieter G. van Dokkum, Garth D. Illingworth +5
We present deep WFC3 grism observations of the candidate z~12 galaxy UDFj-39546284 in the HST Ultra Deep Field (UDF), by combining spectroscopic data from the 3D-HST and CANDELS su…
The Radial Distribution of Star Formation in Galaxies at z~1 from the 3D-HST Survey
Erica June Nelson, Pieter van Dokkum, Ivelina Momcheva +16
The assembly of galaxies can be described by the distribution of their star formation as a function of cosmic time. Thanks to the WFC3 grism on HST it is now possible to measure th…
Photometric Constraints on the Redshift of z~10 candidate UDFj-39546284 from deeper WFC3/IR+ACS+IRAC observations over the HUDF
R. J. Bouwens, P. A. Oesch, G. D. Illingworth +10
Ultra-deep WFC3/IR observations on the HUDF from the HUDF09 program revealed just one plausible z~10 candidate UDFj-39546284. UDFj-39546284 had all the properties expected of a gal…
A Strongly-Lensed Massive Ultra-Compact Quiescent Galaxy at z ~ 2.4 in the COSMOS/UltraVISTA Field
Adam Muzzin, Ivo Labbe, Marijn Franx +14
We report the discovery of a massive ultra-compact quiescent galaxy that has been strongly-lensed into multiple images by a foreground galaxy at z = 0.960. This system was serendip…
Large-Scale Star Formation-Driven Outflows at 1<z<2 in the 3D-HST Survey
Britt F. Lundgren, Gabriel Brammer, Pieter van Dokkum +18
We present evidence of large-scale outflows from three low-mass (log(M/M_sun)~9.75) star-forming (SFR >4 M_sun/yr) galaxies observed at z=1.24, z=1.35 and z=1.75 in the 3D-HST Surv…
3D-HST Grism Spectroscopy of a Gravitationally Lensed, Low-metallicity Starburst Galaxy at z=1.847
Gabriel B. Brammer, Ruben Sanchez-Janssen, Ivo Labbe +17
We present Hubble Space Telescope (HST) imaging and spectroscopy of the gravitational lens SL2SJ02176-0513, a cusp arc at z=1.847. The UV continuum of the lensed galaxy is very blu…