Related papers: Supernova Legacy Survey: Using Spectral Signatures…

Type Ia Supernova Properties as a Function of the Distance to the Host Galaxy in the SDSS-II SN Survey

We use type-Ia supernovae (SNe Ia) discovered by the SDSS-II SN Survey to search for dependencies between SN Ia properties and the projected distance to the host galaxy center, using the distance as a proxy for local galaxy properties…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-06 Lluis Galbany , Ramon Miquel , Linda Ostman , Peter J. Brown , David Cinabro , Chris B. D'Andrea , Joshua Frieman , Saurabh W. Jha , John Marriner , Robert C. Nichol , Jakob Nordin , Matthew D. Olmstead , Masao Sako , Donald P. Schneider , Mathew Smith , Jesper Sollerman , Kaike Pan , Stephanie Snedden , Dmitry Bizyaev , Howard Brewington , Elena Malanushenko , Viktor Malanushenko , Dan Oravetz , Audrey Simmons , Alaina Shelden

Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Four Years

We present the results of spectroscopic observations from the ESSENCE high-redshift supernova (SN) survey during its first four years of operation. This sample includes spectra of all SNe Ia whose light curves were presented by Miknaitis et…

Astrophysics · Physics 2009-11-13 R. J. Foley , T. Matheson , S. Blondin , R. Chornock , J. M. Silverman , P. Challis , A. Clocchiatti , A. V. Filippenko , R. P. Kirshner , B. Leibundgut , J. Sollerman , J. Spyromilio , J. L. Tonry , T. M. Davis , P. M. Garnavich , S. W. Jha , K. Krisciunas , W. Li , G. Pignata , A. Rest , A. G. Riess , B. P. Schmidt , R. C. Smith , C. W. Stubbs , B. E. Tucker , W. M. Wood-Vasey

Quantitative comparison between Type Ia supernova spectra at low and high redshifts: A case study

We develop a method to measure the strength of the absorption features in Type Ia supernova (SN Ia) spectra and use it to make a quantitative comparison between the spectra of Type Ia supernovae at low and high redshifts. In this case…

Astrophysics · Physics 2009-11-13 G. Garavini , G. Folatelli , S. Nobili , G. Aldering , R. Amanullah , P. Antilogus , P. Astier , G. Blanc , J. Bronder , M. S. Burns , A. Conley , S. E. Deustua , M. Doi , S. Fabbro , V. Fadeyev , R. Gibbons , G. Goldhaber , A. Goobar , D. E. Groom , I. Hook , D. A. Howell , N. Kashikawa , A. G. Kim , M. Kowalski , N. Kuznetsova , B. C. Lee , C. Lidman , J. Mendez , T. Morokuma , K. Motohara , P. E. Nugent , R. Pain , S. Perlmutter , R. Quimby , J. Raux , N. Regnault , P. Ruiz-Lapuente , G. Sainton , K. Schahmaneche , E. Smith , A. L. Spadafora , V. Stanishev , R. C. Thomas , N. A. Walton , L. Wang , W. M. Wood-Vasey , N. Yasuda. The Supernova Cosmology Project

SNLS -- the Supernova Legacy Survey

Type Ia supernovae provide direct evidence for an accelerating universe, and for the existence of "dark energy" driving this expansion. The Supernova Legacy Survey (SNLS) will deliver many hundreds of SNIa detections, and well-sampled…

Astrophysics · Physics 2007-05-23 C. J. Pritchet , SNLS Collaboration

Photometric redshifts for supernovae Ia in the Supernova Legacy Survey

We present a method using the SALT2 light curve fitter to determine the redshift of Type Ia supernovae in the Supernova Legacy Survey (SNLS) based on their photometry in g', r', i' and z'. On 289 supernovae of the first three years of SNLS…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 N. Palanque-Delabrouille , V. Ruhlmann-Kleider , S. Pascal , J. Rich , J. Guy , G. Bazin , P. Astier , C. Balland , S. Basa , R. G. Carlberg , A. Conley , D. Fouchez , D. Hardin , I. M. Hook , D. A. Howell , R. Pain , K. Perrett , C. J. Pritchet , N. Regnault , M. Sullivan

Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra

We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe Ia) and its dispersion using high signal-to-noise Keck-I/LRIS-B spectroscopy for a sample of 36 events at intermediate redshift (z=0.5) discovered by the…

Astrophysics · Physics 2011-03-04 R. S. Ellis , M. Sullivan , P. E. Nugent , D. A. Howell , A. Gal-Yam , P. Astier , D. Balam , C. Balland , S. Basa , R. G. Carlberg , A. Conley , D. Fouchez , J. Guy , D. Hardin , I. Hook , R. Pain , K. Perrett , C. J. Pritchet , N. Regnault

Measuring Cosmological Parameters with Type Ia Supernovae in redMaGiC galaxies

Current and future cosmological analyses with Type Ia Supernovae (SNe Ia) face three critical challenges: i) measuring redshifts from the supernova or its host galaxy; ii) classifying SNe without spectra; and iii) accounting for…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-10 R. Chen , D. Scolnic , E. Rozo , E. S. Rykoff , B. Popovic , R. Kessler , M. Vincenzi , T. M. Davis , P. Armstrong , D. Brout , L. Galbany , L. Kelsey , C. Lidman , A. Möller , B. Rose , M. Sako , M. Sullivan , G. Taylor , P. Wiseman , J. Asorey , A. Carr , C. Conselice , K. Kuehn , G. F. Lewis , E. Macaulay , M. Rodriguez-Monroy , B. E. Tucker , T. M. C. Abbott , M. Aguena , S. Allam , F. Andrade-Oliveira , J. Annis , D. Bacon , E. Bertin , S. Bocquet , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , R. Cawthon , M. Costanzi , L. N. da Costa , M. E. S. Pereira , S. Desai , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , B. Flaugher , D. Friedel , J. Frieman , J. García-Bellido , M. Gatti , E. Gaztanaga , D. Gruen , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. J. James , O. Lahav , M. Lima , M. March , F. Menanteau , R. Miquel , R. Morgan , A. Palmese , F. Paz-Chinchón , A. Pieres , A. A. Plazas Malagón , J. Prat , A. K. Romer , A. Roodman , E. Sanchez , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , M. Smith , M. Soares-Santos , E. Suchyta , G. Tarle , D. Thomas , C. To , D. L. Tucker , T. N. Varga

The SDSS-II Supernova Survey: Parameterizing the Type Ia Supernova Rate as a Function of Host Galaxy Properties

Using data from the Sloan Digital Sky Supernova Survey-II, we measure the rate of Type Ia Supernovae (SNe Ia) as a function of galaxy properties at intermediate redshift. A sample of 342 SNe Ia with 0.05<z<0.25 is constructed. Using…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Mathew Smith , Robert C Nichol , Benjamin Dilday , John Marriner , Richard Kessler , Bruce Bassett , David Cinabro , Joshua Frieman , Peter Garnavich , Saurabh W Jha , Hubert Lampeitl , Masao Sako , Donald P Schneider , Jesper Sollerman

Cosmological Inference from Host-Selected Type Ia Supernova Samples

We compare two Type Ia supernova (SN Ia) samples that are drawn from a spectroscopically confirmed SN Ia sample: a host-selected sample in which SNe Ia are restricted to those that have a spectroscopic redshift from the host; and a broader,…

Cosmology and Nongalactic Astrophysics · Physics 2017-02-08 Syed A Uddin , Jeremy Mould , Chris Lidman , Vanina Ruhlmann-Kleider , Delphine Hardin

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

Imaging and Demography of the Host Galaxies of High-Redshift Type Ia Supernovae

We present the results of a study of the host galaxies of high redshift Type Ia supernovae (SNe Ia). We provide a catalog of 18 hosts of SNe Ia observed with the Hubble Space Telescope (HST) by the High-z Supernova Search Team (HZT),…

Astrophysics · Physics 2009-11-10 Benjamin F. Williams , Craig J. Hogan , Brian Barris , Pablo Candia , Peter Challis , Alejandro Clocchiatti , Alison L. Coil , Alexei V. Filippenko , Peter Garnavich , Robert P. Kirshner , Stephen T. Holland , Saurabh Jha , Kevin Krisciunas , Bruno Leibundgut , Weidong Li , Thomas Matheson , Jose Maza , Mark M. Phillips , Adam G. Riess , Brian P. Schmidt , Robert A. Schommer , R. Chris Smith , Jesper Sollerman , Jason Spyromilio , Christopher Stubbs , Nicholas B. Suntzeff , John L. Tonry

The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset

We present cosmological constraints from the sample of Type Ia supernovae (SN Ia) discovered during the full five years of the Dark Energy Survey (DES) Supernova Program. In contrast to most previous cosmological samples, in which SN are…

Cosmology and Nongalactic Astrophysics · Physics 2025-07-22 DES Collaboration , T. M. C. Abbott , M. Acevedo , M. Aguena , A. Alarcon , S. Allam , O. Alves , A. Amon , F. Andrade-Oliveira , J. Annis , P. Armstrong , J. Asorey , S. Avila , D. Bacon , B. A. Bassett , K. Bechtol , P. H. Bernardinelli , G. M. Bernstein , E. Bertin , J. Blazek , S. Bocquet , D. Brooks , D. Brout , E. Buckley-Geer , D. L. Burke , H. Camacho , R. Camilleri , A. Campos , A. Carnero Rosell , D. Carollo , A. Carr , J. Carretero , F. J. Castander , R. Cawthon , C. Chang , R. Chen , A. Choi , C. Conselice , M. Costanzi , L. N. da Costa , M. Crocce , T. M. Davis , D. L. DePoy , S. Desai , H. T. Diehl , M. Dixon , S. Dodelson , P. Doel , C. Doux , A. Drlica-Wagner , J. Elvin-Poole , S. Everett , I. Ferrero , A. Ferté , B. Flaugher , R. J. Foley , P. Fosalba , D. Friedel , J. Frieman , C. Frohmaier , L. Galbany , J. García-Bellido , M. Gatti , E. Gaztanaga , G. Giannini , K. Glazebrook , O. Graur , D. Gruen , R. A. Gruendl , G. Gutierrez , W. G. Hartley , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , B. Jain , D. J. James , N. Jeffrey , E. Kasai , L. Kelsey , S. Kent , R. Kessler , A. G. Kim , R. P. Kirshner , E. Kovacs , K. Kuehn , O. Lahav , J. Lee , S. Lee , G. F. Lewis , T. S. Li , C. Lidman , H. Lin , U. Malik , J. L. Marshall , P. Martini , J. Mena-Fernández , F. Menanteau , R. Miquel , J. J. Mohr , J. Mould , J. Muir , A. Möller , E. Neilsen , R. C. Nichol , P. Nugent , R. L. C. Ogando , A. Palmese , Y. -C. Pan , M. Paterno , W. J. Percival , M. E. S. Pereira , A. Pieres , A. A. Plazas Malagón , B. Popovic , A. Porredon , J. Prat , H. Qu , M. Raveri , M. Rodríguez-Monroy , A. K. Romer , A. Roodman , B. Rose , M. Sako , E. Sanchez , D. Sanchez Cid , M. Schubnell , D. Scolnic , I. Sevilla-Noarbe , P. Shah , J. Allyn. Smith , M. Smith , M. Soares-Santos , E. Suchyta , M. Sullivan , N. Suntzeff , M. E. C. Swanson , B. O. Sánchez , G. Tarle , G. Taylor , D. Thomas , C. To , M. Toy , M. A. Troxel , B. E. Tucker , D. L. Tucker , S. A. Uddin , M. Vincenzi , A. R. Walker , N. Weaverdyck , R. H. Wechsler , J. Weller , W. Wester , P. Wiseman , M. Yamamoto , F. Yuan , B. Zhang , Y. Zhang

The Rise Time of Type Ia Supernovae from the Supernova Legacy Survey

We compare the rise times of nearby and distant Type Ia supernovae (SNe Ia) as a test for evolution using 73 high-redshift spectroscopically-confirmed SNe Ia from the first two years of the five year Supernova Legacy Survey (SNLS) and…

Astrophysics · Physics 2008-11-26 A. Conley , D. A. Howell , A. Howes , M. Sullivan , P. Astier , D. Balam , S. Basa , R. G. Carlberg , D. Fouchez , J. Guy , I. Hook , J. D. Neill , R. Pain , K. Perrett , C. J. Pritchet , N. Regnault , J. Rich , R. Taillet , E. Aubourg , J. Bronder , R. S. Ellis , S. Fabbro , M. Filiol , D. Le Borgne , N. Palanque-Delabrouille , S. Perlmutter , P. Ripoche

Berkeley Supernova Ia Program II: Initial Analysis of Spectra Obtained Near Maximum Brightness

In this second paper in a series we present measurements of spectral features of 432 low-redshift (z < 0.1) optical spectra of 261 Type Ia supernovae (SNe Ia) within 20 d of maximum brightness. The data were obtained from 1989 through the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Jeffrey M. Silverman , Jason J. Kong , Alexei V. Filippenko

Spectroscopic observations of eight supernovae at intermediate redshift

We present spectra of six Type Ia and two Type II supernovae obtained in June 2002 at the William Herschel Telescope during a search for Type Ia supernovae (SNIa) at intermediate redshift. Supernova type identification and phase…

Astrophysics · Physics 2009-11-13 C. Balland , M. Mouchet , R. Amanullah , P. Astier , S. Fabbro , G. Folatelli , G. Garavini , A. Goobar , D. Hardin , M. J. Irwin , R. G. McMahon , A. -M. Mourao , S. Nobili , R. Pain , R. Pascoal , J. Raux , G. Sainton , K. Schahmaneche , N. A. Walton

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

Two Type Ia Supernovae at Redshift ~2 : Improved Classification and Redshift Determination with Medium-band Infrared Imaging

We present two supernovae (SNe) discovered with the Hubble Space Telescope (HST) in the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS), an HST multi-cycle treasury program. We classify both objects as Type Ia SNe…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-17 Steven A. Rodney , Adam G. Riess , Daniel M. Scolnic , David O. Jones , Shoubaneh Hemmati , Alberto Molino , Curtis McCully , Bahram Mobasher , Louis-Gregory Strolger , Or Graur , Brian Hayden , Stefano Casertano

Evaluating Cosmological Biases using Photometric Redshifts for Type Ia Supernova Cosmology with the Dark Energy Survey Supernova Program

Cosmological analyses with Type Ia Supernovae (SNe Ia) have traditionally been reliant on spectroscopy for both classifying the type of supernova and obtaining reliable redshifts to measure the distance-redshift relation. While obtaining a…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-25 R. Chen , D. Scolnic , M. Vincenzi , E. S. Rykoff , J. Myles , R. Kessler , B. Popovic , M. Sako , M. Smith , P. Armstrong , D. Brout , T. M. Davis , L. Galbany , J. Lee , C. Lidman , A. Möller , B. O. Sánchez , M. Sullivan , H. Qu , P. Wiseman , T. M. C. Abbott , M. Aguena , S. Allam , O. Alves , F. Andrade-Oliveira , J. Annis , D. Bacon , D. Brooks , A. Carnero Rosell , J. Carretero , A. Choi , C. Conselice , L. N. da Costa , M. E. S. Pereira , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , B. Flaugher , J. Frieman , J. García-Bellido , M. Gatti , E. Gaztanaga , G. Giannini , D. Gruen , R. A. Gruendl , G. Gutierrez , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , D. J. James , K. Kuehn , M. Lima , J. L. Marshall , J. Mena-Fernández , F. Menanteau , R. Miquel , R. L. C. Ogando , A. Palmese , A. Pieres , A. A. Plazas Malagón , A. Roodman , S. Samuroff , E. Sanchez , D. Sanchez Cid , I. Sevilla-Noarbe , E. Suchyta , M. E. C. Swanson , G. Tarle , C. To , D. L. Tucker , V. Vikram , N. Weaverdyck , J. Weller

Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Two Years

We present the results of spectroscopic observations of targets discovered during the first two years of the ESSENCE project. The goal of ESSENCE is to use a sample of ~200 Type Ia supernovae (SNe Ia) at moderate redshifts (0.2 < z < 0.8)…

Astrophysics · Physics 2009-11-10 T. Matheson , S. Blondin , R. J. Foley , R. Chornock , A. V. Filippenko , B. Leibundgut , R. C. Smith , J. Sollerman , J. Spyromilio , R. P. Kirshner , A. Clocchiatti , C. Aguilera , B. Barris , A. C. Becker , P. Challis , R. Covarrubias , P. Garnavich , M. Hicken , S. Jha , K. Krisciunas , W. Li , A. Miceli , G. Miknaitis , J. L. Prieto , A. Rest , A. G. Riess , M. E. Salvo , B. P. Schmidt , C. W. Stubbs , N. B. Suntzeff , J. L. Tonry

First-year Sloan Digital Sky Survey-II (SDSS-II) Supernova Results: Hubble Diagram and Cosmological Parameters

We present measurements of the Hubble diagram for 103 Type Ia supernovae (SNe) with redshifts 0.04 < z < 0.42, discovered during the first season (Fall 2005) of the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. These data fill in…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Richard Kessler , Andrew Becker , David Cinabro , Jake Vanderplas , Joshua A. Frieman , John Marriner , Tamara M Davis , Benjamin Dilday , Jon Holtzman , Saurabh Jha , Hubert Lampeitl , Masao Sako , Mathew Smith , Chen Zheng , Robert C. Nichol , Bruce Bassett , Ralf Bender , Darren L. Depoy , Mamoru Doi , Ed Elson , Alex V. Filippenko , Ryan J. Foley , Peter M. Garnavich , Ulrich Hopp , Yutaka Ihara , William Ketzeback , W. Kollatschny , Kohki Konishi , Jennifer L. Marshall , Russet J. McMillan , Gajus Miknaitis , Tomoki Morokuma , Edvard M"ortsell , Kaike Pan , Jose Luis Prieto , Michael W. Richmond , Adam G. Riess , Roger Romani , Donald P. Schneider , Jesper Sollerman , Naohiro Takanashi , Kouichi Tokita , Kurt van der Heyden , J. C. Wheeler , Naoki Yasuda , Donald York