Brenda Frye
A5062930113- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Scientific Research and Discoveries
- Pulsars and Gravitational Waves Research
- History and Developments in Astronomy
- CCD and CMOS Imaging Sensors
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Astro and Planetary Science
- Superconducting and THz Device Technology
- Spectroscopy and Laser Applications
- Particle Accelerators and Free-Electron Lasers
- Advanced Optical Sensing Technologies
- Particle accelerators and beam dynamics
- Multiple Myeloma Research and Treatments
University of Arizona
2016-2025
Astronomy and Space
2017-2020
U.S. National Science Foundation
2004-2019
University of Georgia
2018
Clemson University
2018
Stony Brook University
2012-2018
Emory National Primate Research Center
2018
Mayo Clinic in Arizona
2016
University of San Francisco
2011-2012
South Texas Veterans Health Care System
2011-2012
We present a new compilation of Type Ia supernovae (SNe Ia), dataset low-redshift nearby-Hubble-flow SNe and analysis procedures to work with these heterogeneous compilations. This ``Union'' 414 SN Ia, which reduces 307 after selection cuts, includes the recent large samples from Supernova Legacy Survey ESSENCE Survey, older datasets, as well recently extended distant observed HST. A single, consistent blind procedure is used for all various subsamples, implemented that consistently weights...
We present a detailed strong-lensing, weak-lensing and X-ray analysis of Abell 2744 (z= 0.308), one the most actively merging galaxy clusters known. It appears to have unleashed 'dark', 'ghost', 'bullet' 'stripped' substructures, each ∼1014 M⊙. The phenomenology is complex will challenge for numerical simulations reproduce. With new, multiband Hubble Space Telescope (HST) imaging, we identify 34 strongly lensed images 11 galaxies around massive Southern 'core'. Combining this with data from...
We give an overview and describe the rationale, methods, first results from NIRCam images of JWST "Prime Extragalactic Areas for Reionization Lensing Science" ("PEARLS") project. PEARLS uses up to eight filters survey several prime extragalactic areas: two fields at North Ecliptic Pole (NEP); seven gravitationally lensing clusters; high redshift proto-clusters; iconic backlit VV 191 galaxy system map its dust attenuation. also includes NIRISS spectra one NEP NIRSpec high-redshift quasars....
We present early results regarding the morphological and structural properties of galaxies seen with James Webb Space Telescope at $z > 3$ in Early Release Observations SMACS 0723, a galaxy cluster $z=0.39$. investigate, for first time, optical morphologies significant number accurate photometric redshifts this field to determine form structure relatively universe. use visual \textsc{Morfometryka} measures perform quantitative morphology measurements, both parametric light profile fitting...
ABSTRACT We present an interstellar medium and stellar population analysis of three spectroscopically confirmed z > 7 galaxies in the Early Release Observations JWST/NIRCam JWST/NIRSpec data SMACS J0723.3−7327 cluster. use Bayesian spectral energy distribution-fitting code prospector with a flexible star formation history (SFH), variable dust attenuation law, self-consistent model nebular emission (continuum lines). Importantly, we self-consistently fit both line fluxes from...
Abstract We present an analysis of the ultraviolet luminosity function (UV LF) and star formation rate density distant galaxies (7.5 < z 13.5) in “blank” fields Prime Extragalactic Areas for Reionization Lensing Science (PEARLS) survey combined with Early Release data from CEERS, GLASS, NGDEEP surveys/fields first release JADES. use strict quality cuts on EAZY photometric redshifts to obtain a reliable selection characterization high-redshift ( > 6.5) consistently processed set deep,...
Abstract A Type Ia supernova (SN) at z = 1.78 was discovered in James Webb Space Telescope Near Infrared Camera imaging of the galaxy cluster PLCK G165.7+67.0 (G165; 0.35). The SN is situated 1.5–2 kpc from host-galaxy nucleus and appears three different locations as a result gravitational lensing by G165. These data can yield value for Hubble’s constant using time delays this multiply imaged that we call “SN H0pe.” Over cluster, identified 21 image multiplicities, confirmed five them...
Abstract The first James Webb Space Telescope (JWST) Near InfraRed Camera imaging in the field of galaxy cluster PLCK G165.7+67.0 ( z = 0.35) uncovered a Type Ia supernova (SN Ia) at 1.78, called “SN H0pe.” Three different images this one SN were detected as result strong gravitational lensing, each traversing path spacetime, thereby inducing relative delay arrival image. Follow-up JWST observations all three enabled photometric and rare spectroscopic measurements two time delays. Following...
We analyze deep multicolor Advanced Camera images of the largest known gravitational lens, A1689. Radial and tangential arcs delineate critical curves in unprecedented detail, many small counterimages are found near center mass. construct a flexible light deflection field to predict appearance positions counterimages. The model is refined as new identified incorporated improve model, yielding total 106 30 multiply lensed background galaxies, spanning wide redshift range, 1.0 < z 5.5....
We present results from a comprehensive lensing analysis in Hubble Space Telescope (HST) data of the complete Cluster Lensing And Supernova survey with cluster sample. identify previously undiscovered multiple images, allowing improved or first constraints on inner mass distributions and profiles. combine these strong weak shape measurements within HST field view (FOV) to jointly constrain distributions. The is performed two different common parameterizations (one adopts light-traces-mass...
Abstract Enormous Ly α nebulae (ELANe), unique tracers of galaxy density peaks, are predicted to lie at the nodes and intersections cosmic filamentary structures. Previous successful searches for ELANe have focused on wide-field narrowband surveys or targeted known sources such as ultraluminous quasi-stellar objects (QSOs) radio galaxies. Utilizing groups coherently strong absorptions, we developed a new method identify high-redshift overdensities identified an extremely massive overdensity,...
We perform a comprehensive study of the total mass distribution galaxy cluster RXCJ2248 ($z=0.348$) with set high-precision strong lensing models, which take advantage extensive spectroscopic information on many multiply lensed systems. In effort to understand and quantify inherent systematics in parametric modelling, we explore collection 22 models where use different samples multiple image families, parametrizations cosmological parameters. As input for CLASH HST imaging data follow-up...
We present an analysis of 11 bright far-IR/submm sources discovered through a combination the Planck survey and follow-up Herschel-SPIRE imaging. Each source has redshift z=2.2-3.6 obtained blind search with EMIR at IRAM 30-m telescope. Interferometry SMA, optical/near-infrared imaging CFHT VLT reveal morphologies consistent strongly gravitationally lensed sources. Additional photometry was JCMT/SCUBA-2 IRAM/GISMO 850 um 2 mm, respectively. All objects are bright, isolated point in 18 arcsec...
We present a detailed mass reconstruction and novel study on the substructure properties in core of Cluster Lensing And Supernova survey with Hubble (CLASH) Frontier Fields galaxy cluster MACS J0416.1−2403. show employ our extensive spectroscopic data set taken VIsible Multi-Object Spectrograph instrument as part CLASH-VLT program, to confirm spectroscopically 10 strong lensing systems select sample 175 plausible members limiting stellar log (M*/M☉) ≃ 8.6. reproduce measured positions 30...
Abstract Cosmological simulations suggest a strong correlation between high optical-depth Ly α absorbers, which arise from the intergalactic medium, and 3D mass overdensities on scales of 10–30 <?CDATA ${h}^{-1}$?> comoving Mpc. By examining absorption spectra ∼80,000 QSO sight lines over volume 0.1 Gpc 3 in Sloan Digital Sky Survey III (SDSS-III), we have identified an extreme overdensity, BOSS1441, contains rare group absorbers at $z=2.32\pm 0.02$?> . This absorber is associated with six...
Abstract Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a view into both extremely distant intrinsically faint populations. We present here candidate high-redshift galaxies from Reionization Lensing Cluster Survey (RELICS), Hubble Spitzer Space Telescope survey 41 massive spanning an area ≈200 arcmin 2 . These were selected to be excellent lenses, we find similar sample sizes magnitude distributions as And Supernova with (CLASH). discover...
The Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) is a 101 orbit + parallel Cycle 25 Hubble Space Telescope Treasury program taking data from 2018-2020. BUFFALO will expand existing coverage of the (HFF) in WFC3/IR F105W, F125W, F160W ACS/WFC F606W F814W around each six HFF clusters flanking fields. This additional area has not been observed by HST but already covered deep multi-wavelength datasets, including Spitzer Chandra. As with original program, designed to take...
Abstract Dusty star-forming galaxies at high redshift (1 < z 3) represent the most intense regions in universe. Key aspects to these processes are gas heating and cooling mechanisms, although it is well known that gas-rich, little about excitation conditions. Only a few detailed radiative transfer studies have been carried out owing lack of multiple line detections per galaxy. Here we examine sample 24 strongly lensed identified by Planck satellite (LPs) ∼ 1.1–3.5. We analyze 162 CO...
Abstract The first deep field images from the James Webb Space Telescope (JWST) of galaxy cluster SMACS J0723.3-7327 reveal a wealth new lensed at uncharted infrared wavelengths, with unprecedented depth and resolution. Here we securely identify 14 sets multiply imaged galaxies totaling 42 images, adding to five bright already known Hubble data. We find examples arcs crossing critical curves, allowing detailed community follow-up, such as JWST spectroscopy for precise redshift...
The gravitationally lensed star WHL0137-LS, nicknamed Earendel, was identified with a photometric redshift $z_{phot} = 6.2 \pm 0.1$ based on images taken the Hubble Space Telescope. Here we present James Webb Telescope (JWST) Near Infrared Camera (NIRCam) of Earendel in 8 filters spanning 0.8--5.0$\mu$m. In these higher resolution images, remains single unresolved point source lensing critical curve, increasing lower limit magnification to $\mu > 4000$ and restricting plane radius further $r...
Abstract We report the discovery of four galaxy candidates observed 450–600 Myr after Big Bang with photometric redshifts between z ∼ 8.3 and 10.2 measured using James Webb Space Telescope (JWST) NIRCam imaging cluster WHL0137−08 in eight filters spanning 0.8–5.0 μ m, plus nine Hubble 0.4–1.7 m. One candidate is gravitationally lensed a magnification 8, while other three are located nearby module expected magnifications ≲ 1.1. Using SED fitting, we estimate stellar masses these galaxies...
We report the discovery of two extremely magnified lensed star candidates behind galaxy cluster MACS J0647.7+7015, in recent multi-band James Webb Space Telescope (JWST) NIRCam observations. The are seen a previously known, $z_{phot}\simeq4.8$ dropout giant arc that straddles critical curve. lie near expected curve position but lack clear counter images on other side it, suggesting these possibly stars undergoing caustic crossings. present revised lensing models for cluster, including...
MACS0647$-$JD is a triply-lensed $z\sim11$ galaxy originally discovered with the Hubble Space Telescope. Here we report new JWST imaging, which clearly resolves as having two components that are either merging galaxies or stellar complexes within single galaxy. Both very small, masses $\sim10^8\,M_\odot$ and radii $r<100\,\rm pc$. The brighter larger component "A" intrinsically blue ($\beta\sim-2.6$), likely due to recent star formation no dust, spatially extended an effective radius...