Related papers: Type Ia Supernova Spectral Line Ratios as Luminosi…

Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation

We report on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts. Light curves, including high signal-to-noise HST data, and spectra of six SNe Ia that were discovered during 2001 are presented.…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-15 R. Amanullah , C. Lidman , D. Rubin , G. Aldering , P. Astier , K. Barbary , M. S. Burns , A. Conley , K. S. Dawson , S. E. Deustua , M. Doi , S. Fabbro , L. Faccioli , H. K. Fakhouri , G. Folatelli , A. S. Fruchter , H. Furusawa , G. Garavini , G. Goldhaber , A. Goobar , D. E. Groom , I. Hook , D. A. Howell , N. Kashikawa , A. G. Kim , R. A. Knop , M. Kowalski , E. Linder , J. Meyers , T. Morokuma , S. Nobili , J. Nordin , P. E. Nugent , L. Ostman , R. Pain , N. Panagia , S. Perlmutter , J. Raux , P. Ruiz-Lapuente , A. L. Spadafora , M. Strovink , N. Suzuki , L. Wang , W. M. Wood-Vasey , N. Yasuda

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

Distances with <4% Precision from Type Ia Supernovae in Young Star-Forming Environments

The luminosities of Type Ia supernovae (SNe), the thermonuclear explosions of white-dwarf stars, vary systematically with their intrinsic color and the rate at which they fade. From images taken with the Galaxy Evolution Explorer (GALEX),…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 Patrick L. Kelly , Alexei V. Filippenko , David L. Burke , Malcolm Hicken , Mohan Ganeshalingam , Weikang Zheng

Light Curves of Microlensed Type Ia Supernovae

A detailed description of the apparent light curves of microlensed SNe Ia as extended and expanding sources is presented. We show that microlensing amplification can have significant effects on supernova observation. A model light curve is…

Astrophysics · Physics 2007-05-23 Hamed Bagherpour , R. Kantowski , David Branch , Dean Richardson

Galaxy Peculiar Velocities From Large-Scale Supernova Surveys as a Dark Energy Probe

Upcoming imaging surveys such as the Large Synoptic Survey Telescope will repeatedly scan large areas of sky and have the potential to yield million-supernova catalogs. Type Ia supernovae are excellent standard candles and will provide…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-25 Suman Bhattacharya , Arthur Kosowsky , Jeffrey A. Newman , Andrew R. Zentner

A Common Origin of Normal Type Ia Supernovae Suggested by the Photometric Diversity

In recent years, with an increasing number of type Ia supernovae (SNe Ia) discovered soon after their explosions, a non-negligible fraction of SNe Ia with early-excess emissions (EExSNe Ia) have been confirmed. In this letter, we present a…

High Energy Astrophysical Phenomena · Physics 2025-07-22 Weiyu Wu , Ji-an Jiang , Dezheng Meng , Zelin Xu , Keiichi Maeda , Mamoru Doi , Ken'ichi Nomoto , Naoki Yasuda , Masaomi Tanaka , Toshikazu Shigeyama , Nozomu Tominaga , Željko Ivezić , Peter Yoachim , Saurabh W. Jha , Tinggui Wang , Nao Suzuki , Hisanori Furusawa , Andrew J. Connolly , Satoshi Miyazaki

Linear dark energy equation of state revealed by supernovae?

In this letter we propose a test to detect the linearity of the dark energy equation of state, and apply it to two different Type Ia Supernova (SN Ia) data sets, Union2.1 and SNLS3. We find that: a. current SN Ia data are well described by…

Cosmology and Nongalactic Astrophysics · Physics 2014-12-18 Vincenzo Salzano , Yun Wang , Irene Sendra , Ruth Lazkoz

Dependence of Type Ia supernova luminosities on their local environment

We present a fully consistent catalog of local and global properties of host galaxies of 882 Type Ia supernov\ae\ (SNIa) that were selected based on their light-curve properties, spanning the redshift range $0.01 < z < 1.\text{}$ This…

Astrophysics of Galaxies · Physics 2018-07-18 Matthieu Roman , Delphine Hardin , Marc Betoule , Pierre Astier , Christophe Balland , Richard S. Ellis , Sébastien Fabbro , Julien Guy , Isobel M. Hook , D. Andrew Howell , Chris Lidman , Ayan Mitra , Anais Möller , Ana M. Mourão , Jérémy Neveu , Nathalie Palanque-Delabrouille , Chris J. Pritchet , Nicolas Regnault , Vanina Ruhlmann-Kleider , Clare Saunders , Mark Sullivan

Line Polarization of Si II $\lambda$6355 \AA\ in Type Ia Supernovae: A New Statistical Approach to Probe the Explosion Physics and Diversity

Spectropolarimetry provides a unique probe of ejecta asphericities, offering direct insights into the underlying explosion physics of Type Ia supernovae (SNe Ia). We analyze the statistical properties of pre-maximum spectropolarimetric data…

High Energy Astrophysical Phenomena · Physics 2025-12-04 Aleksandar Cikota , Peter Hoeflich , Dietrich Baade , Ferdinando Patat , Lifan Wang , J. Craig Wheeler , Yi Yang , Elham Fereidouni , Divya Mishra

Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II

We present the second and final release of optical spectroscopy of Type Ia Supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra…

High Energy Astrophysical Phenomena · Physics 2024-05-08 N. Morrell , M. M. Phillips , G. Folatelli , M. D. Stritzinger , M. Hamuy , N. B. Suntzeff , E. Y. Hsiao , F. Taddia , C. R. Burns , P. Hoeflich , C. Ashall , C. Contreras , L. Galbany , J. Lu , A. L. Piro , J. Anais , E. Baron , A. Burrow , L. Busta , A. Campillay , S. Castellón , C. Corco , T. Diamond , W. L. Freedman , C. González , K. Krisciunas , S. Kumar , S. E. Persson , J. Serón , M. Shahbandeh , S. Torres , S. A. Uddin , J. P. Anderson , C. Baltay , C. Gall , A. Goobar , E. Hadjiyska , S. Holmbo , M. Kasliwal , C. Lidman , G. H. Marion , P. Mazzali , P. Nugent , S. Perlmutter , G. Pignata , D. Rabinowitz , M. Roth , S. D. Ryder , B. J. Shappee , J. Vinkó , J. C. Wheeler , T. de Jaeger , P. Lira , M. T. Ruiz , J. A. Rich , J. L. Prieto , F. Di Mille , D. Osip , G. Blanc , P. Palunas

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

CfA4: Light Curves for 94 Type Ia Supernovae

We present multi-band optical photometry of 94 spectroscopically-confirmed Type Ia supernovae (SN Ia) in the redshift range 0.0055 to 0.073, obtained between 2006 and 2011. There are a total of 5522 light curve points. We show that our…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Malcolm Hicken , Peter Challis , Robert P. Kirshner , Armin Rest , Claire E. Cramer , W. Michael Wood-Vasey , Gaspar Bakos , Perry Berlind , Warren R. Brown , Nelson Caldwell , Mike Calkins , Thayne Currie , Kathy de Kleer , Gil Esquerdo , Mark Everett , Emilio Falco , Jose Fernandez , Andrew S. Friedman , Ted Groner , Joel Hartman , Matthew J. Holman , Robert Hutchins , Sonia Keys , David Kipping , Dave Latham , George H. Marion , Gautham Narayan , Michael Pahre , Andras Pal , Wayne Peters , Gopakumar Perumpilly , Ben Ripman , Brigitta Sipocz , Andrew Szentgyorgyi , Sumin Tang , Manuel A. P. Torres , Amali Vaz , Scott Wolk , Andreas Zezas

The Type Ia supernovae rate with Subaru/XMM-Newton Deep Survey

We present measurements of the rates of high-redshift Type Ia supernovae derived from the Subaru/XMM-Newton Deep Survey (SXDS). We carried out repeat deep imaging observations with Suprime-Cam on the Subaru Telescope, and detected 1040…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-15 Jun E. Okumura , Yutaka Ihara , Mamoru Doi , Tomoki Morokuma , Reynald Pain , Tomonori Totani , Kyle Barbary , Naohiro Takanashi , Naoki Yasuda , Greg Aldering , Kyle Dawson , Gerson Goldhaber , Isobel Hook , Chris Lidman , Saul Perlmutter , Anthony Spadafora , Nao Suzuki , Lifan Wang

Subluminous Type Ia Supernovae at High Redshift from the Supernova Legacy Survey

The rate evolution of subluminous Type Ia Supernovae is presented using data from the Supernova Legacy Survey. This sub-sample represents the faint and rapidly-declining light-curves of the observed supernova Ia (SN Ia) population here…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 S. Gonzalez-Gaitan , K. Perrett , M. Sullivan , A. Conley , D. A. Howell , R. G. Carlberg , P. Astier , D. Balam , C. Balland , S. Basa , D. Fouchez , J. Guy , D. Hardin , I. M. Hook , R. Pain , C. J. Pritchet , N. Regnault , J. Rich

Comparative Direct Analysis of Type Ia Supernova Spectra. II. Maximum Light

A comparative study of near-maximum-light optical spectra of 24 Type Ia supernovae (SNe Ia) is presented. The spectra are quantified in two ways, and assigned to four groups. Seven "core-normal" SNe Ia have very similar spectra, except for…

Astrophysics · Physics 2009-11-11 David Branch , Leeann Chau Dang , Nicholas Hall , Wesley Ketchum , Mercy Melakayil , Jerod Parrent , M. A. Troxel , D. Casebeer , David J. Jeffery , E. Baron

Spectral sequences of Type Ia supernovae. I. Connecting normal and sub-luminous SN Ia and the presence of unburned carbon

Type Ia supernovae are generally agreed to arise from thermonuclear explosions of carbon-oxygen white dwarfs. The actual path to explosion, however, remains elusive, with numerous plausible parent systems and explosion mechanisms suggested.…

High Energy Astrophysical Phenomena · Physics 2023-03-29 E. Heringer , M. H. van Kerkwijk , S. A. Sim , W. E. Kerzendorf

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Survey Overview and Supernova Spectroscopy

We present spectroscopy from the first three seasons of the Dark Energy Survey Supernova Program (DES-SN). We describe the supernova spectroscopic program in full: strategy, observations, data reduction, and classification. We have…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-26 C. B. D'Andrea , M. Smith , M. Sullivan , R. C. Nichol , R. C. Thomas , A. G. Kim , A. Möller , M. Sako , F. J. Castander , A. V. Filippenko , R. J. Foley , L. Galbany , S. González-Gaitán , E. Kasai , R. P. Kirshner , C. Lidman , D. Scolnic , D. Brout , T. M. Davis , R. R. Gupta , S. R. Hinton , R. Kessler , J. Lasker , E. Macaulay , R. C. Wolf , B. Zhang , J. Asorey , A. Avelino , B. A. Bassett , J. Calcino , D. Carollo , R. Casas , P. Challis , M. Childress , A. Clocchiatti , S. Crawford , K. Glazebrook , D. A. Goldstein , M. L. Graham , J. K. Hoormann , K. Kuehn , G. F. Lewis , K. S. Mandel , E. Morganson , D. Muthukrishna , P. Nugent , Y. -C. Pan , M. Pursiainen , R. Sharp , N. E. Sommer , E. Swann , B. E. Tucker , S. A. Uddin , P. Wiseman , W. Zheng , T. M. C. Abbott , J. Annis , S. Avila , K. Bechtol , G. M. Bernstein , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , C. E. Cunha , L. N. da Costa , C. Davis , J. De Vicente , H. T. Diehl , T. F. Eifler , J. Estrada , J. Frieman , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , B. Hoyle , D. J. James , M. W. G. Johnson , M. D. Johnson , N. Kuropatkin , T. S. Li , M. Lima , M. A. G. Maia , J. L. Marshall , P. Martini , F. Menanteau , C. J. Miller , R. Miquel , E. Neilsen , R. L. C. Ogando , A. A. Plazas , A. K. Romer , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , F. Sobreira , E. Suchyta , G. Tarle , D. L. Tucker , W. Wester

A reddening-free method to estimate the $^{56}$Ni mass of Type Ia supernovae

The increase in the number of Type Ia supernovae (SNe\,Ia) has demonstrated that the population shows larger diversity than has been assumed in the past. The reasons (e.g. parent population, explosion mechanism) for this diversity remain…

Solar and Stellar Astrophysics · Physics 2016-03-23 S. Dhawan , B. Leibundgut , J. Spyromilio , S. Blondin

$Mesiri$:Mephisto Early Supernovae Ia Rapid Identifier

The early time observations of Type Ia supernovae (SNe Ia) play a crucial role in investigating and resolving longstanding questions about progenitor stars and the explosion mechanisms of these events. Colors of supernovae (SNe) in the…

Instrumentation and Methods for Astrophysics · Physics 2024-09-24 Zhang Lunwei , Wang Zhenyu , Liu Dezi , Fang Yuan , Chen Bingqiu , Kumar Brajesh , Er Xinzhong , Liu Xiaowei

Photometric type Ia supernova surveys in narrow band filters

We study the characteristics of a narrow band type Ia supernova survey through simulations based on the upcoming Javalambre Physics of the accelerating universe Astrophysical Survey (J-PAS). This unique survey has the capabilities of…

Cosmology and Nongalactic Astrophysics · Physics 2014-10-24 Henrique S. Xavier , L. Raul Abramo , Masao Sako , Narciso Benítez , Maurício O. Calvão , Alessandro Ederoclite , Antonio Marín-Franch , Alberto Molino , Ribamar R. R. Reis , Beatriz B. Siffert , Laerte Sodré