Publications (34)
HST Grism Observations of a Gravitationally Lensed Redshift 10 Galaxy
Austin Hoag, MaruÅ¡a BradaÄ, Gabriel B. Brammer +11
We present deep spectroscopic observations of a Lyman-break galaxy candidate (hereafter MACS1149-JD) at with the Space Telescope () WFC3/…
A year-long plateau in the late-time near-infrared light curves of Type Ia supernovae
Or Graur, Kate Maguire, Russell Ryan +6
The light curves of Type Ia supernovae are routinely used to constrain cosmology models. Driven by radioactive decay of 56Ni, the light curves steadily decline over time, but >150…
STIPS: The Nancy Grace Roman Space Telescope Imaging Product Simulator
STIPS Development Team, Sebastian Gomez, Andrea Bellini +9
The Space Telescope Imaging Product Simulator (STIPS) is a Python-based package that can be used to simulate scenes from the upcoming \textit{Nancy Grace Roman Space Telescope} (\n…
The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey
Micaela B. Bagley, Nor Pirzkal, Steven L. Finkelstein +45
We present the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey, a deep slitless spectroscopic and imaging Cycle 1 JWST treasury survey designed to constrain f…
The Next Generation Deep Extragalactic Exploratory Public Near-Infrared Slitless Survey Epoch 1 (NGDEEP-NISS1): Extra-Galactic Star-formation and Active Galactic Nuclei at 0.5 < z < 3.6
Nor Pirzkal, Barry Rothberg, Casey Papovich +48
The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) survey program was designed specifically to include Near Infrared Slitless Spectroscopic observations (NGDEEP-NIS…
ATLAS Probe: Breakthrough Science of Galaxy Evolution, Cosmology, Milky Way, and the Solar System
Yun Wang, Massimo Robberto, Mark Dickinson +37
ATLAS (Astrophysics Telescope for Large Area Spectroscopy) Probe is a concept for a NASA probe-class space mission. It is the follow-up space mission to WFIRST, boosting its scient…
A Multiwavelength Study of Active Galactic Nuclei in Post-Merger Remnants
Wenhao Li, Preethi Nair, Jimmy Irwin +9
We investigate the role of galaxy mergers in triggering AGN in the nearby Universe. Our analysis is based on a sample of 79 post-merger remnant galaxies with deep X-ray observation…
Recommendations for optimizing rapid ultraviolet HST observations of gravitational wave optical counterparts
Lou Strolger, Armin Rest, Ori Fox +3
This document presentes general guidelines to investigators proposing ultra-rapid target of opportunity (ToO) observations with the Hubble Space Telescope (HST). Establishing clear…
Studying [CII] Emission in Low-mass Galaxies at z ~ 7
Kelsey Glazer, Marusa Bradac, Ryan L. Sanders +8
We report on a search using the Atacama Large Millimeter/submillimeter Array (ALMA) on three lensed, confirmed {\lya} emitting galaxies at . Ou…
Constraining stellar assembly and AGN feedback at the peak epoch of star formation
Taysun Kimm, Sugata Kaviraj, Julien Devriendt +9
We study stellar assembly and feedback from active galactic nuclei (AGN) around the epoch of peak star formation (1<z<2), by comparing hydrodynamic simulations to rest-frame UV-opt…
JWST reveals a possible galaxy merger in triply-lensed MACS0647JD
Tiger Yu-Yang Hsiao, Dan Coe, Abdurro'uf +63
MACS0647JD is a triply-lensed galaxy originally discovered with the Hubble Space Telescope. Here we report new JWST imaging, which clearly resolves MACS0647JD as ha…
Common Envelopes, Gamma Rays, and Sudden Spectral Changes of Novae
Robert Williams, Russell Ryan, Richard Rudy
A common envelope (CE) is proposed as the origin of the early postoutburst spectra of many novae. A simple model is proposed to explain the properties of the CE based on the emissi…
Real or Interloper? The Redshift Likelihoods of z>8 Galaxies in the HUDF12
Nor Pirzkal, Barry Rothberg, Russell Ryan +4
In the absence of spectra, fitting template model spectra to observed photometric fluxes, known as Spectral Energy Distribution (SED) fitting, has become the workhorse for identify…
Hubble Frontier Field Photometric Catalogues of Abell 370 and RXC J2248.7-4431: Multiwavelength photometry, photometric redshifts, and stellar properties
Marusa Bradac, Kuang-Han Huang, Marco Castellano +15
This paper presents multiwavelength photometric catalogues of the last two Hubble Frontier Fields (HFF), the massive galaxy clusters Abell 370 and RXC J2248.7-4431. The photometry…
Discovery of a z = 7.452 High Equivalent Width Lyman-α Emitter from the Hubble Space Telescope Faint Infrared Grism Survey
Rebecca L. Larson, Steven L. Finkelstein, Norbert Pirzkal +18
We present the results of an unbiased search for Lyα emission from continuum-selected 6 < z < 8 galaxies. Our dataset consists of 160 orbits of G102 slitless grism spectroscopy ob…
Tomographic Magnification of Lyman Break Galaxies in The Deep Lens Survey
Christopher B. Morrison, Ryan Scranton, Brice Ménard +5
Using about 450,000 galaxies in the Deep Lens Survey, we present a detection of the gravitational magnification of z > 4 Lyman Break Galaxies by massive foreground galaxies with 0.…
ALMA [CII] detection of a redshift 7 lensed galaxy behind RXJ1347.1-1145
MaruÅ¡a BradaÄ, Diego Garcia-Appadoo, Kuang-Han Huang +13
We present the results of ALMA spectroscopic follow-up of a Lyman- emitting galaxy behind the cluster RXJ1347-1145. We report the detection of [CII]158m line full…
Roman CCS White Paper: Measuring Type Ia Supernovae Discovered in the Roman High Latitude Time Domain Survey
Rebekah Hounsell, Dan Scolnic, Dillon Brout +14
We motivate the cosmological science case of measuring Type Ia supernovae with the Nancy Grace Roman Space Telescope as part of the High Latitude Time Domain Survey. We discuss pre…
Breaking the brightness barrier: JWST/NIRCam DHS spectroscopy for high-precision time-series observations
Achrene Dyrek, John Stansberry, Louis E. Bergeron +12
Many of the most scientifically compelling exoplanets orbit bright nearby stars that exceed the brightness limits of existing JWST spectroscopic observing modes. To address this li…
The Distribution of Quenched Galaxies in the Massive z = 0.87 Galaxy Cluster El Gordo
Rachel Honor, Seth Cohen, Timothy Carleton +27
El Gordo (ACT-CL J01024915) is a massive galaxy cluster with two major mass components at redshift . Using SED fitting results from JWST/NIRCam photometry, the fraction…
ATLAS Probe: Breakthrough Science of Galaxy Evolution, Cosmology, Milky Way, and the Solar System
Yun Wang, Mark Dickinson, Lynne Hillenbrand +45
ATLAS (Astrophysics Telescope for Large Area Spectroscopy) is a concept for a NASA probe-class space mission. It is the spectroscopic follow-up mission to WFIRST, boosting its scie…
Spectrophotometric Redshifts In The Faint Infrared Grism Survey: Finding Overdensities Of Faint Galaxies
John Pharo, Sangeeta Malhotra, James Rhoads +19
We improve the accuracy of photometric redshifts by including low-resolution spectral data from the G102 grism on the Hubble Space Telescope, which assists in redshift determinatio…
A Catalog of Emission-Line Galaxies from the Faint Infrared Grism Survey: Studying Environmental Influence on Star Formation
John Pharo, Sangeeta Malhotra, James E. Rhoads +18
We present a catalog of 208 Emission Line Galaxies (ELG) selected from 1D slitless spectroscopy obtained using Hubble's WFC3 G102 grism, as part of the Faint Infrar…
Spitzer UltRa Faint SUrvey Program (SURFS UP) I: An Overview
MaruÅ¡a BradaÄ, Russell Ryan, Stefano Casertano +14
SURFSUP is a joint Spitzer and HST Exploration Science program using 10 galaxy clusters as cosmic telescopes to study z >~ 7 galaxies at intrinsically lower luminosities, enabled b…
A Census of the Bright z=8.5-11 Universe with the Hubble and Spitzer Space Telescopes in the CANDELS Fields
Steven L. Finkelstein, Micaela Bagley, Mimi Song +21
We present the results from a new search for candidate galaxies at z ~ 8.5-11 discovered over the 850 arcmin^2 area probed by the Cosmic Assembly Near-Infrared Deep Extragalactic L…
Galaxy Formation In The Reionization Epoch As Hinted By Wide Field Camera 3 Observations Of The Hubble Ultra Deep Field
Haojing Yan, Rogier Windhorst, Nimish Hathi +4
We present a large sample of candidate galaxies at z~7--10, selected in the HUDF using the new observations made by the HST/WFC3. Our sample is composed of 20 z-dropouts, 15 Y-drop…
SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-Sky Surface-Brightness Measurements: I. Survey Overview and Methods
Rogier A. Windhorst, Timothy Carleton, Rosalia O'Brien +35
We give an overview and describe the rationale, methods, and testing of the Hubble Space Telescope (HST) Archival Legacy project "SKYSURF." SKYSURF uses HST's unique capability as…
Emission Line Metallicities From The Faint Infrared Grism Survey and VLT/MUSE
John Pharo, Sangeeta Malhotra, James Rhoads +20
We derive direct measurement gas-phase metallicities of for 14 low-mass Emission Line Galaxies (ELGs) at identified in the Faint Infrar…
SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-Sky Surface-Brightness Measurements: II. First Limits on Diffuse Light at 1.25, 1.4, and 1.6 microns
Timothy Carleton, Rogier A. Windhorst, Rosalia O'Brien +28
We present the first results from the HST Archival Legacy project "SKYSURF." As described in Windhorst et al. 2022, SKYSURF utilizes the large HST archive to study the diffuse UV,…
Ultra-deep Large Binocular Camera U-band Imaging of the GOODS-North Field: Depth vs. Resolution
Teresa A. Ashcraft, Rogier A. Windhorst, Rolf A. Jansen +13
We present a study of the trade-off between depth and resolution using a large number of U-band imaging observations in the GOODS-North field (Giavalisco et al. 2004) from the Larg…
The Wide Field Infrared Survey Telescope: 100 Hubbles for the 2020s
Rachel Akeson, Lee Armus, Etienne Bachelet +103
The Wide Field Infrared Survey Telescope (WFIRST) is a 2.4m space telescope with a 0.281 deg^2 field of view for near-IR imaging and slitless spectroscopy and a coronagraph designe…
Conditions for Reionizing the Universe with A Low Galaxy Ionizing Photon Escape Fraction
Steven L. Finkelstein, Anson D'Aloisio, Jan-Pieter Paardekooper +7
We explore scenarios for reionizing the intergalactic medium with low galaxy ionizing photon escape fractions. We combine simulation-based halo-mass dependent escape fractions with…
FIGS: Spectral fitting constraints on the star formation history of massive galaxies since Cosmic Noon
Ignacio Ferreras, Anna Pasquali, Nor Pirzkal +16
We constrain the stellar population properties of a sample of 52 massive galaxies, with stellar mass log Ms>10.5, over the redshift range 0.5<z<2 by use of observer-frame optical a…
A Critical Assessment of Photometric Redshift Methods: A CANDELS Investigation
Tomas Dahlen, Bahram Mobasher, Sandra M. Faber +35
We present results from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) photometric redshift methods investigation. In this investigation, the results…