187 citations · 452 across the 17 of their papers we have counts for
20 papers
Constraining the Light Curves of Magnified Stellar Events at z ~ 0.725
Carter Meyerhoff, Hayley Williams, Rafael Ortiz +5
Extreme magnification by lensing galaxy clusters allows the detection of high-luminosity stars during cluster caustic transient events at cosmological distances. The Dragon Arc at…
SN Helios: A Multiply Imaged Type II Supernova Opening Time-Delay Cosmography beyond redshift of 3
Seiji Fujimoto, Conor Larison, Justin D. R. Pierel +64
We report the discovery and spectroscopic confirmation of SN Helios, a strongly lensed, multiply imaged Type II supernova (SN) at behind the galaxy cluster RXC J0018.5+162…
VENUS: an ultra-faint galaxy hosting the metal-poor type II supernova at Witnessing the initial metal enrichment with extremely frequent core-collapse supernovae?
Yoshihisa Asada, Seiji Fujimoto, Joseph F. V. Allingham +50
We present the first characterization of the host galaxy of a recently discovered type IIP SN at (SN Eos). SN Eos and its host galaxy are gravitationally lensed and multip…
First Statistical Study of Over 100 Magnified Stellar Events at Redshift with JWST
J. M. Palencia, Fengwu Sun, J. M. Diego +25
Highly magnified stars at cosmological distances () become detectable thanks to microlensing by intracluster stars near the critical curves of galaxy clusters. Multi…
SN 2022riv in RX J2129: Discovery, Spectroscopic Classification, and Microlensing of a Strongly Lensed Type Ia Supernova from JWST and HST Observations
Birendra Dhanasingham, Patrick L. Kelly, Wenlei Chen +27
The multiply imaged SN 2022riv was discovered through a search of galaxy cluster fields as part of a Hubble Space Telescope (HST) SNAP program to find highly magnified stars. The s…
JWST's PEARLS: A clumpy ring galaxy at
David Vizgan, Ming-Yang Zhuang, Ian Smail +22
Ring galaxies are an uncommon class of galaxies whose morphology is closely related to dynamical processes that govern galaxy evolution. Some ring galaxies, known as "collisional r…
JWST's PEARLS: A Candidate Massive Binary Star System in a Lensed Galaxy at Redshift 0.94
Hayley Williams, Patrick L. Kelly, Emmanouil Zapartas +18
Massive stars at cosmological distances can be individually detected during transient microlensing events, when gravitational lensing magnifications may exceed ~1000. Nine such sou…
JWST's PEARLS: Temperatures of Nine Highly Magnified Stars in a Galaxy at Redshift 0.94 and Simulated Stellar Population Dependence on Stellar Metallicity and the Initial Mass Function
Hayley Williams, Patrick L. Kelly, Rogier A. Windhorst +17
We present stellar atmosphere modeling of JWST NIRCam photometry of nine highly magnified individual stars in a single galaxy at redshift z=0.94 known as the Warhol arc, which is s…
Transient star B/R ratio and star formation in lensed galaxies
Sung Kei Li, Jose M. Palencia, Jose M. Diego +8
The extreme magnification from galaxy clusters and microlenses therein allows the detection of individual, luminous stars in lensed galaxies as transient events, and hence provides…
Microlensing at Cosmological Distances: Event Rate Predictions in the Warhol Arc of MACS 0416
J. M. Palencia, J. M. Diego, L. Dai +13
Highly magnified stars ( 100) are now outinely identified as transient events at cosmological distances thanks to microlensing by intra-cluster stars near the critical curve…
Constraining the z 1 Initial Mass Function with {\it HST} and {\it JWST} Lensed Stars in MACS J0416.1-2403
Sung Kei Li, Jose M. Diego, Ashish K. Meena +19
Our understanding of galaxy properties and evolution is contingent on knowing the initial mass function (IMF), and yet to date, the IMF is constrained only to local galaxies. Indiv…
Dark Matter distinguished by skewed microlensing in the "Dragon Arc"
Tom Broadhurst, Sung Kei Li, Amruth Alfred +18
Microlensed stars recently discovered by JWST & HST follow closely the winding critical curve of A370 along all sections of the ``Dragon Arc" traversed by the critical curve. These…
Sp1149 II: Spectroscopy of HII Regions Near the Critical Curve of MACS J1149 and Cluster Lens Models
Hayley Williams, Patrick Kelly, Wenlei Chen +3
Galaxy-cluster gravitational lenses enable the study of faint galaxies even at large lookback times, and, recently, time-delay constraints on the Hubble constant. There have been f…
Sp1149 I: Constraints on the Balmer L-sigma Relation for HII Regions in a Spiral Galaxy at Redshift z=1.49 Strongly Lensed by the MACS J1149 Cluster
Hayley Williams, Patrick Kelly, Wenlei Chen +3
The luminosities and velocity dispersions of the extinction-corrected Balmer emission lines of giant HII regions in nearby galaxies exhibit a tight correlation (~0.35 dex scatter).…
An Empirical reionization history model inferred from the low-redshift Lyman continuum survey and the star-forming galaxies at
Yu-Heng Lin, Claudia Scarlata, Hayley Williams +8
We present a new analysis of the rest-frame UV and optical spectra of a sample of three galaxies discovered behind the gravitational lensing cluster RX\,J2129.4+0009. We comb…
Closing in on the sources of cosmic reionization: first results from the GLASS-JWST program
S. Mascia, L. Pentericci, A. Calabro' +29
The escape fraction of Lyman-continuum (LyC) photons () is a key parameter for determining the sources of cosmic reionization at . At these redshifts, owing to th…
Evolution of the Mass-Metallicity Relation from Redshift to the Local Universe
Danial Langeroodi, Jens Hjorth, Wenlei Chen +17
A tight positive correlation between the stellar mass and the gas-phase metallicity of galaxies has been observed at low redshifts. The redshift evolution of this correlation can s…
Flashlights: More than A Dozen High-Significance Microlensing Events of Extremely Magnified Stars in Galaxies at Redshifts z=0.7-1.5
Patrick L. Kelly, Wenlei Chen, Amruth Alfred +23
Once only accessible in nearby galaxies, we can now study individual stars across much of the observable universe aided by galaxy-cluster gravitational lenses. When a star, compact…
A Magnified Compact Galaxy at Redshift 9.51 with Strong Nebular Emission Lines
Hayley Williams, Patrick L. Kelly, Wenlei Chen +21
Ultraviolet light from early galaxies is thought to have ionized gas in the intergalactic medium. However, there are few observational constraints on this epoch because of the fain…
Observations of edge-on protoplanetary disks with ALMA I. Results from continuum data
M. Villenave, F. Menard, W. R. F. Dent +15
We analyze a sample of 12 HST-selected edge-on protoplanetary disks for which the vertical extent of the emission layers can be constrained directly. We present ALMA high angular r…