Search Results - "Riess, A. G."
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The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample
Published in The Astrophysical journal (01-06-2018)“…We present optical light curves, redshifts, and classifications for spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1)…”
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A measurement of the Hubble constant from Type II supernovae
Published in Monthly notices of the Royal Astronomical Society (20-06-2020)“…ABSTRACT Progressive increases in the precision of the Hubble-constant measurement via Cepheid-calibrated Type Ia supernovae (SNe Ia) have shown a discrepancy…”
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Simulations of the WFIRST Supernova Survey and Forecasts of Cosmological Constraints
Published in The Astrophysical journal (01-11-2018)“…The Wide Field InfraRed Survey Telescope (WFIRST) was the highest-ranked large space-based mission of the 2010 New Worlds, New Horizons decadal survey. It is…”
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CATS: The Hubble Constant from Standardized TRGB and Type Ia Supernova Measurements
Published in Astrophysical journal. Letters (01-09-2023)“…Abstract The tip of the red giant branch (TRGB) provides a luminous standard candle for constructing distance ladders to measure the Hubble constant. In…”
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Hydrogen-poor Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey
Published in The Astrophysical journal (10-01-2018)“…We present light curves and classification spectra of 17 hydrogen-poor superluminous supernovae (SLSNe) from the Pan-STARRS1 Medium Deep Survey (PS1 MDS). Our…”
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Comparative Analysis of TRGBs (CATs) from Unsupervised, Multi-halo-field Measurements: Contrast is Key
Published in The Astrophysical journal (01-09-2023)“…Abstract The tip of the red giant branch (TRGB) is an apparent discontinuity of the luminosity function (LF) due to the end of the red giant evolutionary phase…”
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Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
Published in The Astrophysical journal (10-09-2007)“…We present constraints on the dark energy equation-of-state parameter, w = P/(pc super(2)), using 60 SNe Ia from the ESSENCE supernova survey. We derive a set…”
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SN REFSDAL: CLASSIFICATION AS A LUMINOUS AND BLUE SN 1987A-LIKE TYPE II SUPERNOVA
Published in The Astrophysical journal (10-11-2016)“…ABSTRACT We have acquired Hubble Space Telescope (HST) and Very Large Telescope near-infrared spectra and images of supernova (SN) Refsdal after its discovery…”
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Two peculiar fast transients in a strongly lensed host galaxy
Published in Nature astronomy (01-04-2018)“…A massive galaxy cluster can serve as a magnifying glass for distant stellar populations, as strong gravitational lensing magnifies background galaxies and…”
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A year-long plateau in the late-time near-infrared light curves of type Ia supernovae
Published in Nature astronomy (01-02-2020)“…The light curves of type Ia supernovae are routinely used to constrain cosmology models. Driven by radioactive decay of 56 Ni, the light curves steadily…”
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Cosmological Model Insensitivity of Local H0 from the Cepheid Distance Ladder
Published in The Astrophysical journal (01-05-2020)“…The observed tension (∼9% difference) between the local distance ladder measurement of the Hubble constant, H0, and its value inferred from the cosmic…”
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Constraints on Cosmological Models from Hubble Space Telescope Observations of High-z Supernovae
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Constraining Cosmic Evolution of Type Ia Supernovae
Published in The Astrophysical journal (01-09-2008)“…We present a large-scale effort of creating composite spectra of high- redshift SNe Ia and comparing them to low-redshift counterparts in an attempt to…”
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A 5 per cent measurement of the Hubble–Lemaître constant from Type II supernovae
Published in Monthly notices of the Royal Astronomical Society (02-07-2022)“…ABSTRACT The most stringent local measurement of the Hubble–Lemaître constant from Cepheid-calibrated Type Ia supernovae (SNe Ia) differs from the value…”
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Should Type Ia Supernova Distances Be Corrected for Their Local Environments?
Published in The Astrophysical journal (10-11-2018)“…Recent analyses suggest that distance residuals measured from Type Ia supernovae (SNe Ia) are correlated with local host galaxy properties within a few…”
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Time Dilation in Type Ia Supernova Spectra at High Redshift
Published in The Astrophysical journal (01-08-2008)“…We present multiepoch spectra of 13 high-redshift Type Ia supernovae (SNe Ia) drawn from the literature, the ESSENCE and SNLS projects, and our own separate…”
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Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters
Published in The Astrophysical journal (10-04-2018)“…We use 1169 Pan-STARRS supernovae (SNe) and 195 low-z (z < 0.1) SNe Ia to measure cosmological parameters. Though most Pan-STARRS SNe lack spectroscopic…”
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The Foundation Supernova Survey: motivation, design, implementation, and first data release
Published in Monthly notices of the Royal Astronomical Society (01-03-2018)“…Abstract The Foundation Supernova Survey aims to provide a large, high-fidelity, homogeneous, and precisely calibrated low-redshift Type Ia supernova (SN Ia)…”
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The Cepheid Distance to the Seyfert 1 Galaxy NGC 4151
Published in The Astrophysical journal (01-10-2020)“…Abstract We derive a distance of 15.8 ± 0.4 Mpc to the archetypal Seyfert 1 galaxy NGC 4151 based on the near-infrared Cepheid period–luminosity relation and…”
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The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope
Published in The Astrophysical journal (10-08-2019)“…Measurements of the dark energy equation-of-state parameter, w, have been limited by uncertainty in the selection effects and photometric calibration of z <…”
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