Reagen Leimbach
A5044895004- Gamma-ray bursts and supernovae
- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- CCD and CMOS Imaging Sensors
- Calibration and Measurement Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Scientific Measurement and Uncertainty Evaluation
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Pulsars and Gravitational Waves Research
- Adaptive optics and wavefront sensing
- Advanced Optical Sensing Technologies
University of Arizona
2022-2024
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...
The first James Webb Space Telescope ({\it JWST}) Near InfraRed Camera (NIRCam) imaging in the field of galaxy cluster PLCK G165.7+67.0 ($z=0.35$) uncovered a Type Ia supernova (SN~Ia) at $z=1.78$, 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 {\it JWST} observations all three enabled photometric and rare spectroscopic measurements two time...
The massive galaxy cluster El Gordo (z=0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope (JWST) Near-Infrared Camera (NIRCam) images. Eight bands NIRCam imaging were obtained in the ``Prime Extragalactic Areas for Reionization and Lensing Science'' (``PEARLS'') program. PSF-matched photometry across Hubble (HST) filters supplies new photometric redshifts. A light-traces-mass lens model based on 56 image multiplicities identifies two mass peaks yields a...
Supernova (SN) H0pe was discovered as a new transient in James Webb Space Telescope (JWST) NIRCam images of the galaxy cluster PLCK G165.7+67.0 taken part "Prime Extragalactic Areas for Reionization and Lensing Science" (PEARLS) JWST GTO program (# 1176) on 2023 March 30 (AstroNote 2023-96; Frye et al. 2023). The is compact source associated with background that stretched triply-imaged by cluster's strong gravitational lensing. This paper reports spectra 950-1370 nm observer frame two...
We present a detailed study of the Planck-selected binary galaxy cluster PLCK G165.7+67.0 (G165; $z$=0.348). A multiband photometric catalog is generated that incorporates new imaging from Large Binocular Telescope/Large Camera and Spitzer/IRAC to existing imaging. To cope with different image characteristics, robust methods are applied in extraction matched-aperture photometry. Photometric redshifts estimated for 143 galaxies 4 arcmin$^{2}$ field overlap covered by all these data. confirm...
Abstract We present a new parametric lens model for the G165.7+67.0 galaxy cluster, which was discovered with Planck through its bright submillimeter flux, originating from pair of extraordinary dusty star-forming galaxies (DSFGs) at z ≈ 2.2. Using JWST and interferometric mm/radio observations, we characterize intrinsic physical properties DSFGs, are separated by only ∼1″ (8 kpc) velocity difference Δ V ≲ 600 km s −1 in source plane, thus likely undergoing major merger. Boasting star...
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; $z = 0.35$). 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...
We present a new parametric lens model for the G165.7+67.0 galaxy cluster, which was discovered with $Planck$ through its bright submillimeter flux, originating from pair of extraordinary dusty star-forming galaxies (DSFGs) at $z\approx 2.2$. Using JWST and interferometric mm/radio observations, we characterize intrinsic physical properties DSFGs, are separated by only $\sim 1^{\prime\prime}$ (8 kpc) velocity difference $\Delta V \lesssim 600~{\rm km}~{\rm s}^{-1}$ in source plane, thus...
The massive galaxy cluster El Gordo (z=0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope (JWST) Near-Infrared Camera (NIRCam) images. Eight bands NIRCam imaging were obtained in the ``Prime Extragalactic Areas for Reionization and Lensing Science'' (``PEARLS'') program. PSF-matched photometry across Hubble (HST) filters supplies new photometric redshifts. A light-traces-mass lens model based on 56 image multiplicities identifies two mass peaks yields a...
Supernova (SN) H0pe was discovered as a new transient in James Webb Space Telescope (JWST) NIRCam images of the galaxy cluster PLCK G165.7+67.0 taken part "Prime Extragalactic Areas for Reionization and Lensing Science" (PEARLS) JWST GTO program (# 1176) on 2023 March 30 (AstroNote 2023-96; Frye et al. 2023). The is compact source associated with background that stretched triply-imaged by cluster's strong gravitational lensing. This paper reports spectra 950-1370 nm observer frame two...
This talk was presented on 2019 April 13 at the 2018-19 NASA Arizona Space Grant Symposium. The event located Doubletree by Hilton in Tempe, (USA).Submitted abstract:Galaxy evolution is driven gas accretion, star formation, and outflows from dying stars. We can understand physics of galaxy constraining their heavy element abundances. Current studies distant galaxies utilize “strong-line diagnostics” to determine these These measurements are not accurate as they calibrated with nearby...