Search Results - "NUGENT, Peter"
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The Progenitors of Superluminous Type Ia Supernovae
Published in The Astrophysical journal (01-08-2023)“…Recent observations of type Ia supernovae (SNe Ia) have discovered a subclass of “super-Chandrasekhar” SNe Ia (SC SNe Ia) whose high luminosities and low…”
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Nebular Models of Sub-Chandrasekhar Mass Type Ia Supernovae: Clues to the Origin of Ca-rich Transients
Published in The Astrophysical journal (01-01-2021)“…We use non-local thermal equilibrium radiative transport modeling to examine observational signatures of sub-Chandrasekhar mass double detonation explosions in…”
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Precise Time Delays from Strongly Gravitationally Lensed Type Ia Supernovae with Chromatically Microlensed Images
Published in The Astrophysical journal (01-03-2018)“…Time delays between the multiple images of strongly gravitationally lensed Type Ia supernovae (glSNe Ia) have the potential to deliver precise cosmological…”
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Intermediate Palomar Transient Factory: Realtime Image Subtraction Pipeline
Published in Publications of the Astronomical Society of the Pacific (01-11-2016)“…A fast-turnaround pipeline for realtime data reduction plays an essential role in discovering and permitting follow-up observations to young supernovae and…”
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Tumbling Dice: Radio Constraints on the Presence of Circumstellar Shells around Type Ia Supernovae with Impact Near Maximum Light
Published in The Astrophysical journal (01-05-2021)“…The progenitors of Type Ia supernovae (SNe Ia) are debated, particularly the evolutionary state of the binary companion that donates mass to the exploding…”
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The Zwicky Transient Facility: Surveys and Scheduler
Published in Publications of the Astronomical Society of the Pacific (01-06-2019)“…We present a novel algorithm for scheduling the observations of time-domain imaging surveys. Our integer linear programming approach optimizes an observing…”
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PRECURSORS PRIOR TO TYPE IIn SUPERNOVA EXPLOSIONS ARE COMMON: PRECURSOR RATES, PROPERTIES, AND CORRELATIONS
Published in The Astrophysical journal (10-07-2014)“…There is a growing number of Type IIn supernovae (SNe) which present an outburst prior to their presumably final explosion. These precursors may affect the SN…”
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Spectra of Hydrogen-poor Superluminous Supernovae from the Palomar Transient Factory
Published in The Astrophysical journal (01-03-2018)“…Most Type I superluminous supernovae (SLSNe-I) reported to date have been identified by their high peak luminosities and spectra lacking obvious signs of…”
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AGAINST THE WIND: RADIO LIGHT CURVES OF TYPE IA SUPERNOVAE INTERACTING WITH LOW-DENSITY CIRCUMSTELLAR SHELLS
Published in The Astrophysical journal (01-06-2016)“…ABSTRACT For decades a wide variety of observations spanning the radio through optical and on to the X-ray have attempted to uncover signs of type Ia…”
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CALCIUM-RICH GAP TRANSIENTS IN THE REMOTE OUTSKIRTS OF GALAXIES
Published in The Astrophysical journal (20-08-2012)“…From the first two seasons of the Palomar Transient Factory, we identify three peculiar transients (PTF 09dav, PTF 10iuv, and PTF 11bij) with five…”
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SHADOW OF A COLOSSUS: A z = 2.44 GALAXY PROTOCLUSTER DETECTED IN 3D Lyα FOREST TOMOGRAPHIC MAPPING OF THE COSMOS FIELD
Published in The Astrophysical journal (01-02-2016)“…Using moderate-resolution optical spectra from 58 background Lyman-break galaxies and quasars at within a 11.′5 × 13.′5 area of the COSMOS field ( projected…”
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12
Exclusion of a luminous red giant as a companion star to the progenitor of supernova SN 2011fe
Published in Nature (London) (15-12-2011)“…Archival images of the progenitor system of supernova SN 2011fe are so sensitive that the presence of luminous red giants or most helium stars is directly…”
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ON THE EARLY-TIME EXCESS EMISSION IN HYDROGEN-POOR SUPERLUMINOUS SUPERNOVAE
Published in The Astrophysical journal (20-01-2017)“…ABSTRACT We present the light curves of the hydrogen-poor superluminous supernovae (SLSNe I) PTF 12dam and iPTF 13dcc, discovered by the (intermediate) Palomar…”
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iPTF 16hgs: A Double-peaked Ca-rich Gap Transient in a Metal-poor, Star-forming Dwarf Galaxy
Published in The Astrophysical journal (10-10-2018)“…Calcium-rich gap transients represent an intriguing new class of faint and fast-evolving supernovae that exhibit strong [Ca ii] emission in their nebular phase…”
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A strong ultraviolet pulse from a newborn type Ia supernova
Published in Nature (London) (21-05-2015)“…Observations of declining ultraviolet emission from a type Ia supernova within four days of the explosion are as expected if material ejected by the supernova…”
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60 Microlensing Events from the Three Years of Zwicky Transient Facility Phase One
Published in The Astrophysical journal (01-04-2023)“…Microlensing events have historically been discovered throughout the Galactic bulge and plane by surveys designed solely for that purpose. We conduct the first…”
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SLOW-SPEED SUPERNOVAE FROM THE PALOMAR TRANSIENT FACTORY: TWO CHANNELS
Published in The Astrophysical journal (20-01-2015)“…Since the discovery of the unusual prototype SN 2002cx, the eponymous class of Type I (hydrogen-poor) supernovae with low ejecta speeds has grown to include…”
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Detection of z ∼ 2.3 Cosmic Voids from 3D Lyα Forest Tomography in the COSMOS Field
Published in The Astrophysical journal (01-07-2018)“…We present the most distant detection of cosmic voids ( z ∼ 2.3) and the first detection of three-dimensional voids in the Ly α forest. We used a 3D…”
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SN 2020jgb: A Peculiar Type Ia Supernova Triggered by a Helium-shell Detonation in a Star-forming Galaxy
Published in The Astrophysical journal (01-04-2023)“…The detonation of a thin (≲0.03 M ⊙ ) helium shell (He-shell) atop a ∼1 M ⊙ white dwarf (WD) is a promising mechanism to explain normal Type Ia supernovae (SNe…”
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Exploring the Optical Transient Sky with the Palomar Transient Factory
Published in Publications of the Astronomical Society of the Pacific (01-12-2009)“…The Palomar Transient Factory (PTF) is a wide-field experiment designed to investigate the optical transient and variable sky on time scales from minutes to…”
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