Search Results - "Kirshner, Robert P."
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The Pantheon+ Analysis: The Full Data Set and Light-curve Release
Published in The Astrophysical journal (01-10-2022)“…Abstract Here we present 1701 light curves of 1550 unique, spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological…”
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Type Ia Supernova Light Curve Inference: Hierarchical Models in the Optical and Near-infrared
Published in The Astrophysical journal (20-04-2011)“…We have constructed a comprehensive statistical model for Type Ia supernova (SN Ia) light curves spanning optical through near-infrared (NIR) data. A…”
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Type Ia Supernova Distances at Redshift >1.5 from the Hubble Space Telescope Multi-cycle Treasury Programs: The Early Expansion Rate
Published in The Astrophysical journal (01-02-2018)“…We present an analysis of 15 Type Ia supernovae (SNe Ia) at redshift (9 at ) recently discovered in the CANDELS and CLASH Multi-Cycle Treasury programs using…”
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The Type Ia Supernova Color-Magnitude Relation and Host Galaxy Dust: A Simple Hierarchical Bayesian Model
Published in The Astrophysical journal (20-06-2017)“…Conventional Type Ia supernova (SN Ia) cosmology analyses currently use a simplistic linear regression of magnitude versus color and light curve shape, which…”
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Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
Published in The Astrophysical journal (01-08-2009)Get full text
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Type Ia Supernovae Are Excellent Standard Candles in the Near-infrared
Published in The Astrophysical journal (10-12-2019)“…We analyze a set of 89 type Ia supernovae (SNe Ia) that have both optical and near-infrared (NIR) photometry to derive distances and construct low-redshift (z…”
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Cosmic flows in the nearby universe from Type Ia supernovae
Published in Monthly notices of the Royal Astronomical Society (01-02-2012)“…Peculiar velocities are one of the only probes of very large scale mass density fluctuations in the nearby Universe. We present new 'minimal variance' bulk…”
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SN 2012cg: EVIDENCE FOR INTERACTION BETWEEN A NORMAL SN Ia AND A NON-DEGENERATE BINARY COMPANION
Published in The Astrophysical journal (01-04-2016)“…ABSTRACT We report evidence for excess blue light from the Type Ia supernova (Sn Ia) SN 2012cg at 15 and 16 days before maximum B-band brightness. The emission…”
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Hubble Space Telescope Images of SN 1987A: Evolution of the Ejecta and the Equatorial Ring from 2009 to 2022
Published in The Astrophysical journal (01-05-2024)“…Abstract Supernova (SN) 1987A offers a unique opportunity to study how a spatially resolved SN evolves into a young SN remnant. We present and analyze Hubble…”
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LATE-TIME OPTICAL EMISSION FROM CORE-COLLAPSE SUPERNOVAE
Published in The Astrophysical journal (20-05-2012)“…Ground-based optical spectra and Hubble Space Telescope images of 10 core-collapse supernovae (CCSNe) obtained several years to decades after outburst are…”
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The 30 Year Search for the Compact Object in SN 1987A
Published in The Astrophysical journal (10-09-2018)“…Despite more than 30 years of searching, the compact object in Supernova (SN) 1987A has not yet been detected. We present new limits on the compact object in…”
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Ca hnk: The Calcium-rich Transient Supernova 2016hnk from a Helium Shell Detonation of a Sub-Chandrasekhar White Dwarf
Published in The Astrophysical journal (01-06-2020)“…We present observations and modeling of SN 2016hnk, a Ca-rich supernova (SN) that is consistent with being the result of a He-shell double-detonation explosion…”
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JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition
Published in The Astrophysical journal (01-12-2023)“…Abstract JWST Near Infrared Camera (NIRCam) observations at 1.5–4.5 μ m have provided broadband and narrowband imaging of the evolving remnant of SN 1987A with…”
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iPTF15eqv: Multiwavelength Exposé of a Peculiar Calcium-rich Transient
Published in The Astrophysical journal (01-09-2017)“…The progenitor systems of the class of "Ca-rich transients" is a key open issue in time domain astrophysics. These intriguing objects exhibit unusually strong…”
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Doublets and Double Peaks: Late-Time [O I] λλ6300, 6364 Line Profiles of Stripped-Envelope, Core-Collapse Supernovae
Published in The Astrophysical journal (01-02-2010)Get full text
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THE MORPHOLOGY OF THE EJECTA IN SUPERNOVA 1987A: A STUDY OVER TIME AND WAVELENGTH
Published in The Astrophysical journal (01-05-2013)“…We present a study of the morphology of the ejecta in Supernova 1987A based on images and spectra from the Hubble Space Telescope (HST) as well as integral…”
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The Standardized Candle Method for Type II Plateau Supernovae
Published in The Astrophysical journal (01-06-2010)“…In this paper, we study the 'standardized candle method' using a sample of 37 nearby (redshift z < 0.06) Type II plateau supernovae having BVRI photometry and…”
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Type Ia Supernovae Are Good Standard Candles in the Near Infrared: Evidence from PAIRITEL
Published in The Astrophysical journal (10-12-2008)“…We have obtained 1087 NIR measurements of 21 SNe Ia using PAIRITEL, nearly doubling the number of well-sampled NIR SN Ia light curves. These data strengthen…”
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The Absolute Magnitudes of Type Ia Supernovae in the Ultraviolet
Published in The Astrophysical journal (01-10-2010)“…We examine the absolute magnitudes and light-curve shapes of 14 nearby (redshift z = 0.004-0.027) Type Ia supernovae (SNe Ia) observed in the ultraviolet (UV)…”
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LATE SPECTRAL EVOLUTION OF THE EJECTA AND REVERSE SHOCK IN SN 1987A
Published in The Astrophysical journal (01-05-2013)“…We present observations with the Very Large Telescope and Hubble Space Telescope (HST) of the broad emission lines from the inner ejecta and reverse shock of…”
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