Related papers: A Revised SALT2 Surface for Fitting Type Ia Supern…

Distance Measurements from Supernovae and Dark Energy Constraints

Constraints on dark energy from current observational data are sensitive to how distances are measured from Type Ia supernova (SN Ia) data. We find that flux-averaging of SNe Ia can be used to test the presence of unknown systematic…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-29 Yun Wang

Understanding Type Ia supernovae through their U-band spectra

Context. Observations of Type Ia supernovae (SNe Ia) can be used to derive accurate cosmological distances through empirical standardization techniques. Despite this success neither the progenitors of SNe Ia nor the explosion process are…

High Energy Astrophysical Phenomena · Physics 2018-06-20 J. Nordin , G. Aldering , P. Antilogus , C. Aragon , S. Bailey , C. Baltay , K. Barbary , S. Bongard , K. Boone , V. Brinnel , C. Buton , M. Childress , N. Chotard , Y. Copin , S. Dixon , P. Fagrelius , U. Feindt , D. Fouchez , E. Gangler , B. Hayden , W. Hillebrandt , A. Kim , M. Kowalski , D. Kuesters , P. -F. Leget , S. Lombardo , Q. Lin , R. Pain , E. Pecontal , R. Pereira , S. Perlmutter , D. Rabinowitz , M. Rigault , K. Runge , D. Rubin , C. Saunders , G. Smadja , C. Sofiatti , N. Suzuki , S. Taubenberger , C. Tao , R. C. Thomas

ZTF SN Ia DR2: Impact of the galaxy cluster environment on the stretch distribution of Type Ia supernovae

Understanding the impact of the astrophysical environment on Type Ia supernova (SN Ia) properties is crucial to minimize systematic uncertainties in cosmological analyses based on this probe. We investigate the dependence of the SN Ia…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-19 F. Ruppin , M. Rigault , M. Ginolin , G. Dimitriadis , A. Goobar , J. Johansson , K. Maguire , J. Nordin , M. Smith , M. Aubert , J. Biedermann , Y. Copin , U. Burgaz , B. Carreres , F. Feinstein , D. Fouchez , T. E. Muller-Bravo , L. Galbany , S. L. Groom , W. D. Kenworthy , Y. -L. Kim , R. R. Laher , P. Nugent , B. Popovic , J. Purdum , B. Racine , P. Rosnet , D. Rosselli , R. Smith , J. Sollerman , J. H. Terwel

The Dark Energy Survey 5-year photometrically identified Type Ia Supernovae

As part of the cosmology analysis using Type Ia Supernovae (SN Ia) in the Dark Energy Survey (DES), we present photometrically identified SN Ia samples using multi-band light-curves and host galaxy redshifts. For this analysis, we use the…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-21 A. Möller , M. Smith , M. Sako , M. Sullivan , M. Vincenzi , P. Wiseman , P. Armstrong , J. Asorey , D. Brout , D. Carollo , T. M. Davis , C. Frohmaier , L. Galbany , K. Glazebrook , L. Kelsey , R. Kessler , G. F. Lewis , C. Lidman , U. Malik , R. C. Nichol , D. Scolnic , B. E. Tucker , T. M. C. Abbott , M. Aguena , S. Allam , J. Annis , E. Bertin , S. Bocquet , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , C. Conselice , M. Costanzi , M. Crocce , L. N. da Costa , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , D. A. Finley , B. Flaugher , D. Friedel , J. Frieman , J. García-Bellido , D. W. Gerdes , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , O. Lahav , M. March , J. L. Marshall , F. Menanteau , R. Miquel , R. Morgan , A. Palmese , F. Paz-Chinchón , A. Pieres , A. A. Plazas Malagón , A. K. Romer , A. Roodman , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , E. Suchyta , G. Tarle , D. Thomas , C. To , T. N. Varga

The Effect of Host Galaxies on Type Ia Supernovae in the SDSS-II Supernova Survey

We present an analysis of the host galaxy dependencies of Type Ia Supernovae (SNe Ia) from the full three year sample of the SDSS-II Supernova Survey. We rediscover, to high significance, the strong correlation between host galaxy typeand…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-21 Hubert Lampeitl , Mathew Smith , Robert C. Nichol , Bruce Bassett , David Cinabro , Benjamin Dilday , Ryan J. Foley , Joshua A. Frieman , Peter M. Garnavich , Ariel Goobar , Myungshin Im , Saurabh W. Jha , John Marriner , Ramon Miquel , Jakob Nordin , Linda Östman , Adam G. Riess , Masao Sako , Donald P. Schneider , Jesper Sollerman , Maximilian Stritzinger

The Pantheon+ Analysis: SuperCal-Fragilistic Cross Calibration, Retrained SALT2 Light Curve Model, and Calibration Systematic Uncertainty

We present here a re-calibration of the photometric systems used in the Pantheon+ sample of Type Ia supernovae (SNe Ia) including those used for the SH0ES distance-ladder measurement of H$_0$. We utilize the large and uniform sky coverage…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-16 Dillon Brout , Georgie Taylor , Dan Scolnic , Charlotte M. Wood , Benjamin M. Rose , Maria Vincenzi , Arianna Dwomoh , Christopher Lidman , Adam Riess , Noor Ali , Helen Qu , Mi Dai

Photometric selection of Type Ia supernovae in the Supernova Legacy Survey

We present a sample of 485 photometrically identified Type Ia supernova candidates mined from the first three years of data of the CFHT SuperNova Legacy Survey (SNLS). The images were submitted to a deferred processing independent of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 G. Bazin , V. Ruhlmann-Kleider , N. Palanque-Delabrouille , J. Rich , E. Aubourg , P. Astier , C. Balland , S. Basa , R. G. Carlberg , A. Conley , D. Fouchez , J. Guy , D. Hardin , I. M. Hook , D. A. Howell , R. Pain , K. Perrett , C. J. Pritchet , N. Regnault , M. Sullivan , N. Fourmanoit , S. Gonzalez-Gaitan , C. Lidman , S. Perlmutter , P. Ripoche , E. S. Walker

Bayesian Anomaly Detection for Ia Cosmology: Automating SALT3 Data Curation

Precision cosmology with Type Ia supernovae (SNe Ia) requires robust quality control of large, heterogeneous datasets. Current data processing often relies on manual, subjective rejection of photometric data, a practice that is not scalable…

Instrumentation and Methods for Astrophysics · Physics 2025-09-18 S. A. K. Leeney , W. J. Handley , H. T. J. Bevins , E. de Lera Acedo

Absolute Distances to Nearby Type Ia Supernovae via Light Curve Fitting Methods

We present a comparative study of absolute distances to a sample of very nearby, bright Type Ia supernovae (SNe) derived from high cadence, high signal-to-noise, multi-band photometric data. Our sample consists of four SNe: 2012cg, 2012ht,…

High Energy Astrophysical Phenomena · Physics 2018-05-02 J. Vinkó , A. Ordasi , T. Szalai , K. Sárneczky , E. Bányai , I. B. Bíró , T. Borkovits , T. Hegedüs , G. Hodosán , J. Kelemen , P. Klagyivik , L. Kriskovics , E. Kun , G. H. Marion , G. Marschalkó , L. Molnár , A. P. Nagy , A. Pál , J. M. Silverman , R. Szakáts , E. Szegedi-Elek , P. Székely , A. Szing , K. Vida , J. C. Wheeler

Photometric properties of intermediate redshift Type Ia Supernovae observed by SDSS-II Supernova Survey

We have analyzed multi-band light curves of 328 intermediate redshift (0.05 <= z < 0.24) type Ia supernovae (SNe Ia) observed by the Sloan Digital Sky Survey-II Supernova Survey (SDSS-II SN Survey). The multi-band light curves were…

Astrophysics of Galaxies · Physics 2016-12-21 Naohiro Takanashi , Mamoru Doi , Naoki Yasuda , Hanindyo Kuncarayakti , Kohki Konishi , Donald P. Schneider , David Cinabro , John Marriner

K-corrections and Extinction Corrections for Type Ia Supernovae

The measurement of the cosmological parameters from Type Ia supernovae hinges on our ability to compare nearby and distant supernovae accurately. Here we present an advance on a method for performing generalized K-corrections for Type Ia…

Astrophysics · Physics 2010-04-06 Peter Nugent , Alex Kim , Saul Perlmutter

Spectral properties of Type Ia supernovae up to z~0.3

Aims: Spectroscopic observations of Type Ia supernovae obtained at the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT), in conjunction with the SDSS-II Supernova Survey, are analysed. We use spectral indicators…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 J. Nordin , L. Ostman , A. Goobar , R. Amanullah , R. C. Nichol , M. Smith , J. Sollerman , B. A. Bassett , J. Frieman , P. M. Garnavich , G. Leloudas , M. Sako , D. P. Schneider

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

We present the analysis underpinning the measurement of cosmological parameters from 207 spectroscopically classified type Ia supernovae (SNe Ia) from the first three years of the Dark Energy Survey Supernova Program (DES-SN), spanning a…

Cosmology and Nongalactic Astrophysics · Physics 2019-06-04 D. Brout , D. Scolnic , R. Kessler , C. B. D'Andrea , T. M. Davis , R. R. Gupta , S. R. Hinton , A. G. Kim , J. Lasker , C. Lidman , E. Macaulay , A. Möller , R. C. Nichol , M. Sako , M. Smith , M. Sullivan , B. Zhang , P. Andersen , J. Asorey , A. Avelino , B. A. Bassett , P. Brown , J. Calcino , D. Carollo , P. Challis , M. Childress , A. Clocchiatti , A. V. Filippenko , R. J. Foley , L. Galbany , K. Glazebrook , J. K. Hoormann , E. Kasai , R. P. Kirshner , K. Kuehn , S. Kuhlmann , G. F. Lewis , K. S. Mandel , M. March , V. Miranda , E. Morganson , D. Muthukrishna , P. Nugent , A. Palmese , Y. -C. Pan , R. Sharp , N. E. Sommer , E. Swann , R. C. Thomas , B. E. Tucker , S. A. Uddin , W. Wester , T. M. C. Abbott , S. Allam , J. Annis , S. Avila , K. Bechtol , G. M. Bernstein , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , C. E. Cunha , L. N. da Costa , C. Davis , J. De Vicente , D. L. DePoy , S. Desai , H. T. Diehl , P. Doel , A. Drlica-Wagner , T. F. Eifler , J. Estrada , E. Fernandez , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , D. Gruen , R. A. Gruendl , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , B. Hoyle , D. J. James , M. Jarvis , T. Jeltema , E. Krause , O. Lahav , T. S. Li , M. Lima , M. A. G. Maia , J. Marriner , J. L. Marshall , P. Martini , F. Menanteau , C. J. Miller , R. Miquel , R. L. C. Ogando , A. A. Plazas , A. K. Romer , A. Roodman , E. S. Rykoff , E. Sanchez , B. Santiago , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , M. A. Troxel , D. L. Tucker , V. Vikram , A. R. Walker , Y. Zhang

ZTF SN Ia DR2: Overview

We present the first homogeneous release of several thousand Type Ia supernovae (SNe Ia), all having spectroscopic classification, and spectroscopic redshifts for half the sample. This release, named the "DR2", contains 3628 nearby (z <…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-04 Mickael Rigault , Mathew Smith , Ariel Goobar , Kate Maguire , Georgios Dimitriadis , Umut Burgaz , Suhail Dhawan , Jesper Sollerman , Nicolas Regnault , Marek Kowalski , Melissa Amenouche , Marie Aubert , Chloé Barjou-Delayre , Julian Bautista , Josh S. Bloom , Bastien Carreres , Tracy X. Chen , Yannick Copin , Maxime Deckers , Dominique Fouchez , Christoffer Fremling , Lluis Galbany , Madeleine Ginolin , Matthew Graham , Mancy M. Kasliwal , W. D'Arcy Kenworthy , Young-Lo Kim , Dylan Kuhn , Frank F. Masci , Tomas Müller-Bravo , Adam Miller , Joel Johansson , Jakob Nordin , Peter Nugent , Igor Andreoni , Eric Bellm , Marc Betoule , Mahmoud Osman , Dan Perley , Brodie Popovic , Philippe Rosnet , Damiano Rosselli , Florian Ruppin , Robert Senzel , Ben Rusholme , Tassilo Schweyer , Jacco H. Terwel , Alice Townsend , Andy Tzanidakis , Avery Wold , Josiah Purdum , Yu-Jing Qin , Benjamin Racine , Simeon Reusch , Reed Riddle , Lin Yan

Dark Energy Survey Supernovae: Simulations and Survey Strategy

We present simulations for the Dark Energy Survey (DES) using a new code suite (SNANA) that generates realistic supernova light curves accounting for atmospheric seeing conditions and intrinsic supernova luminosity variations using MLCS2k2…

Cosmology and Nongalactic Astrophysics · Physics 2009-06-17 J. P. Bernstein , R. Kessler , S. Kuhlmann , H. Spinka

Supernova Acceleration Probe: Studying Dark Energy with Type Ia Supernovae

The Supernova Acceleration Probe (SNAP) will use Type Ia supernovae (SNe Ia) as distance indicators to measure the effect of dark energy on the expansion history of the Universe. (SNAP's weak-lensing program is described in a companion…

Astrophysics · Physics 2012-08-27 SNAP Collaboration

Evidence for a correlation between the Si II 4000 width and Type Ia supernova color

We study the pseudo equivalent width of the Si II 4000 feature of Type Ia supernovae in the redshift range 0.0024 < z < 0.634. We find that this spectral indicator correlates with the lightcurve color excess (SALT2 c) as well as previously…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 J. Nordin , L. Ostman , A. Goobar , C. Balland , H. Lampeitl , R. C. Nichol , M. Sako , D. P. Schneider , M. Smith , J. Sollerman , J. C. Wheeler

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe Ia from…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-13 T. M. C. Abbott , S. Allam , P. Andersen , C. Angus , J. Asorey , A. Avelino , S. Avila , B. A. Bassett , K. Bechtol , G. M. Bernstein , E. Bertin , D. Brooks , D. Brout , P. Brown , D. L. Burke , J. Calcino , A. Carnero Rosell , D. Carollo , M. Carrasco Kind , J. Carretero , R. Casas , F. J. Castander , R. Cawthon , P. Challis , M. Childress , A. Clocchiatti , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , C. Davis , T. M. Davis , J. De Vicente , D. L. DePoy , S. Desai , H. T. Diehl , P. Doel , A. Drlica-Wagner , T. F. Eifler , A. E. Evrard , E. Fernandez , A. V. Filippenko , D. A. Finley , B. Flaugher , R. J. Foley , P. Fosalba , J. Frieman , L. Galbany , J. Garcia-Bellido , E. Gaztanaga , T. Giannantonio , K. Glazebrook , D. A. Goldstein , S. Gonzalez-Gaitan , D. Gruen , R. A. Gruendl , J. Gschwend , R. R. Gupta , G. Gutierrez , W. G. Hartley , S. R. Hinton , D. L. Hollowood , K. Honscheid , J. K. Hoormann , B. Hoyle , D. J. James , T. Jeltema , M. W. G. Johnson , M. D. Johnson , E. Kasai , S. Kent , R. Kessler , A. G. Kim , R. P. Kirshner , E. Kovacs , E. Krause , R. Kron , K. Kuehn , S. Kuhlmann , N. Kuropatkin , O. Lahav , J. Lasker , G. F. Lewis , T. S. Li , C. Lidman , M. Lima , H. Lin , E. Macaulay , M. A. G. Maia , K. S. Mandel , M. March , J. Marriner , J. L. Marshall , P. Martini , F. Menanteau , C. J. Miller , R. Miquel , V. Miranda , J. J. Mohr , E. Morganson , D. Muthukrishna , A. Möller , E. Neilsen , R. C. Nichol , B. Nord , P. Nugent , R. L. C. Ogando , A. Palmese , Y. -C. Pan , A. A. Plazas , M. Pursiainen , A. K. Romer , A. Roodman , E. Rozo , E. S. Rykoff , M. Sako , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , D. Scolnic , S. Serrano , I. Sevilla-Noarbe , R. Sharp , M. Smith , M. Soares-Santos , F. Sobreira , N. E. Sommer , H. Spinka , E. Suchyta , M. Sullivan , E. Swann , G. Tarle , D. Thomas , R. C. Thomas , M. A. Troxel , B. E. Tucker , S. A. Uddin , A. R. Walker , W. Wester , P. Wiseman , R. C. Wolf , B. Yanny , B. Zhang , Y. Zhang

Improved Standardization of Type II-P Supernovae: Application to an Expanded Sample

In the epoch of precise and accurate cosmology, cross-confirmation using a variety of cosmographic methods is paramount to circumvent systematic uncertainties. Owing to progenitor histories and explosion physics differing from those of Type…

Astrophysics · Physics 2011-02-11 Dovi Poznanski , Nathaniel Butler , Alexei V. Filippenko , Mohan Ganeshalingam , Weidong Li , Joshua S. Bloom , Ryan Chornock , Ryan J. Foley , Peter E. Nugent , Jeffrey M. Silverman , S. Bradley Cenko , Elinor L. Gates , Douglas C. Leonard , Adam A. Miller , Maryam Modjaz , Frank J. D. Serduke , Nathan Smith , Brandon J. Swift , Diane S. Wong

Characterising the Standardisation Properties of Type Ia Supernovae in the z band with Hierarchical Bayesian Modelling

Type Ia supernovae (SNe Ia) are standardisable candles: their peak magnitudes can be corrected for correlations between light curve properties and their luminosities to precisely estimate distances. Understanding SN Ia standardisation…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-19 Erin E. Hayes , Suhail Dhawan , Kaisey S. Mandel , David O. Jones , Ryan J. Foley , Stephen Thorp , Matthew Grayling , Sam M. Ward , Aaron Do , Danial Langeroodi , Nicholas Earl , Kaylee M. de Soto , Gautham Narayan , Katie Auchettl , Thomas de Boer , Kenneth C. Chambers , David A. Coulter , Christa Gall , Hua Gao , Luca Izzo , Chien-Cheng Lin , Eugene A. Magnier , Armin Rest , Qinan Wang