Related papers: Time Dilation in Type Ia Supernova Spectra at High…

The Local Hosts of Type Ia Supernovae

We use multi-wavelength, matched aperture, integrated photometry from GALEX, SDSS and the RC3 to estimate the physical properties of 166 nearby galaxies hosting 168 well-observed Type Ia supernovae (SNe Ia). Our data corroborate well-known…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 James D. Neill , Mark Sullivan , D. Andy Howell , Alex Conley , Mark Seibert , D. Christopher Martin , Tom A. Barlow , Karl Foster , Peter G. Friedman , Patrick Morrissey , Susan G. Neff , David Schiminovich , Ted K. Wyder , Luciana Bianchi , José Donas , Timothy M. Heckman , Young-Wook Lee , Barry F. Madore , Bruno Milliard , R. Michael Rich , Alex S. Szalay

The Rate of Type Ia Supernovae at High Redshift

We derive the rates of Type Ia supernovae (SNIa) over a wide range of redshifts using a complete sample from the IfA Deep Survey. This sample of more than 100 SNIa is the largest set ever collected from a single survey, and therefore…

Astrophysics · Physics 2009-11-13 Brian J. Barris , John L. Tonry

Supernovae in the Subaru Deep Field: An Initial Sample, and Type Ia Rate, out to Redshift 1.6

Large samples of high-redshift supernovae (SNe) are potentially powerful probes of cosmic star formation, metal enrichment, and SN physics. We present initial results from a new deep SN survey, based on re-imaging in the R, i', z' bands, of…

Astrophysics · Physics 2009-11-13 Dovi Poznanski , Dan Maoz , Naoki Yasuda , Ryan J. Foley , Mamoru Doi , Alexei V. Filippenko , Masataka Fukugita , Avishay Gal-Yam , Buell T. Jannuzi , Tomoki Morokuma , Takeshi Oda , Heidi Schweiker , Keren Sharon , Jeffrey M. Silverman , Tomonori Totani

Rapid identification of lensed type Ia supernovae with color-magnitude selection

Strongly lensed type Ia supernovae (SNe Ia) provide a unique cosmological probe to address the Hubble tension problem in cosmology. In addition to the sensitivity of the time delays to the value of the Hubble constant, the transient and…

Cosmology and Nongalactic Astrophysics · Physics 2025-06-27 Prajakta Mane , Anupreeta More , Surhud More

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

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

The ZTF-BTS Type Ia supernovae luminosity function is consistent with a single progenitor channel for the explosions

We construct the Type Ia supernovae (SNe Ia) luminosity function (LF) using the Zwicky Transient Facility Bright Transient Survey (BTS) catalogue. While this magnitude-limited survey has an unprecedented number of objects, it suffers from…

High Energy Astrophysical Phenomena · Physics 2021-12-14 Amir Sharon , Doron Kushnir

Two populations of progenitors for type Ia SNe?

We use recent observations of type Ia Supernova (SN Ia) rates to derive, on robust empirical grounds, the distribution of the delay time (DTD) between the formation of the progenitor star and its explosion as a SN. Our analysis finds: i)…

Astrophysics · Physics 2009-07-09 F. Mannucci , M. Della Valle , N. Panagia

Predicted and observed evolution in the mean properties of Type Ia supernovae with redshift

Recent studies indicate that Type Ia supernovae (SNe Ia) consist of two groups - a "prompt" component whose rates are proportional to the host galaxy star formation rate, whose members have broader lightcurves and are intrinsically more…

Astrophysics · Physics 2014-10-13 D. Andrew Howell , Mark Sullivan , Alex Conley , Ray Carlberg

Infrared and Optical Spectroscopy of Type Ia Supernovae in the Nebular Phase

We present near-infrared (NIR) spectra for Type Ia supernovae at epochs of 13 to 338 days after maximum blue light. Some contemporary optical spectra are also shown. All the NIR spectra exhibit considerable structure throughout the J-, H-…

Astrophysics · Physics 2015-06-24 E. J. C. Bowers , W. P. S. Meikle , T. R. Geballe , N. A. Walton , P. A. Pinto , V. S. Dhillon , S. B. Howell , M. K. Harrop-Allin

Hubble Space Telescope spectra of the type Ia supernova SN2011fe: a tail of low-density, high-velocity material with Z<Zsolar

Hubble Space Telescope spectroscopic observations of the nearby type Ia supernova (SN Ia) SN2011fe, taken on 10 epochs from -13.1 to +40.8 days relative to B-band maximum light, and spanning the far-ultraviolet (UV) to the near-infrared…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Paolo Mazzali , Mark Sullivan , Stephan Hachinger , Richard Ellis , Peter E. Nugent , D. Andrew Howell , Avishay Gal-Yam , Kate Maguire , Jeff Cooke , Rollin Thomas , Ken Nomoto , Emma Walker

Late-Time Observations of ASASSN-14lp Strengthen the Case for a Correlation between the Peak Luminosity of Type Ia Supernovae and the Shape of their Late-Time Light Curves

Late-time observations of Type Ia supernovae (SNe Ia), >900 days after explosion, have shown that this type of SN does not suffer an "IR catastrophe" at 500 days as previously predicted. Instead, several groups have observed a slow-down in…

High Energy Astrophysical Phenomena · Physics 2018-10-17 Or Graur , David R. Zurek , Mihai Cara , Armin Rest , Ivo R. Seitenzahl , Benjamin J. Shappee , Michael M. Shara , Adam G. Riess

Constraining Cosmic Evolution of Type Ia Supernovae

We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts. Through the ESSENCE project, we have obtained 107 spectra of 88…

Astrophysics · Physics 2014-11-18 Ryan J. Foley , A. V. Filippenko , C. Aguilera , A. C. Becker , S. Blondin , P. Challis , A. Clocchiatti , R. Covarrubias , T. M. Davis , P. M. Garnavich , S. Jha , R. P. Kirshner , K. Krisciunas , B. Leibundgut , W. Li , T. Matheson , A. Miceli , G. Miknaitis , G. Pignata , A. Rest , A. G. Riess , B. P. Schmidt , R. C. Smith , J. Sollerman , J. Spyromilio , C. W. Stubbs , J. L. Tonry , N. B. Suntzeff , W. M. Wood-Vasey , A. Zenteno

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

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

Comparative Direct Analysis of Type Ia Supernova Spectra. IV. Postmaximum

A comparative study of optical spectra of Type Ia supernovae (SNe Ia) obtained near 1 week, 3 weeks, and 3 months after maximum light is presented. Most members of the four groups that were defined on the basis of maximum light spectra in…

Astrophysics · Physics 2009-11-13 David Branch , David J. Jeffery , Jerod Parrent , E. Baron , M. A. Troxel , V. Stanishev , Melissa Keithley , Joshua Harrison , Christopher Bruner

Infrared Spectra of the Subluminous Type Ia Supernova 1999by

Near-infrared spectra of the subluminous Type Ia SN1999by are presented which cover the time evolution from about 4 days before to 2 weeks after maximum. Analysis of these data was accomplished through the construction of an extended set of…

Astrophysics · Physics 2009-11-07 P. Hoeflich , C. Gerardy , R. Fesen , S. Sakai

Chemical evolution models: the role of type Ia supernovae in the $\alpha$-elements over Iron relative abundances and their variations in time and space

The role of type Ia supernovae (SN Ia), mainly the Delay Time Distributions (DTDs) determined by the binary systems, and the yields of elements created by different explosion mechanisms, are studied by using the MulChem chemical evolution…

Astrophysics of Galaxies · Physics 2024-07-02 O. Cavichia , M. Mollá , J. J. Bazán , A. Castrillo , L. Galbany , I. Millán-Irigoyen , Y. Ascasibar , A. I Díaz , H. Monteiro

Measuring Type Ia Supernova Distances and Redshifts From Their Multi-band Light Curves

The distance and redshift of a type Ia supernova can be determined simultaneously through its multi-band light curves. This fact may be used for imaging surveys that discover and obtain photometry for large numbers of supernovae; so many…

Astrophysics · Physics 2008-11-26 Alex G. Kim , Ramon Miquel

First-Year Spectroscopy for the SDSS-II Supernova Survey

This paper presents spectroscopy of supernovae discovered in the first season of the Sloan Digital Sky Survey-II Supernova Survey. This program searches for and measures multi-band light curves of supernovae in the redshift range z = 0.05 -…

Astrophysics · Physics 2008-11-26 Chen Zheng , Roger W. Romani , Masao Sako , John Marriner , Bruce Bassett , Andrew Becker , Changsu Choi , David Cinabro , Fritz DeJongh , Darren L. Depoy , Ben Dilday , Mamoru Doi , Joshua A. Frieman , Peter M. Garnavich , Craig J. Hogan , Jon Holtzman , Myungshin Im , Saurabh Jha , Richard Kessler , Kohki Konishi , Hubert Lampeitl , Jennifer L. Marshall , David McGinnis , Gajus Miknaitis , Robert C. Nichol , Jose Luis Prieto , Adam G. Riess , Michael W. Richmond , Donald P. Schneider , Mathew Smith , Naohiro Takanashi , Kouichi Tokita , Kurt van der Heyden , Naoki Yasuda , Roberto J. Assef , John Barentine , Ralf Bender , Roger D. Blandford , Malcolm Bremer , Howard Brewington , Chris A. Collins , Arlin Crotts , Jack Dembicky , Jason Eastman , Alastair Edge , Ed Elson , Michael E. Eyler , Alexei V. Filippenko , Ryan J. Foley , Stephan Frank , Ariel Goobar , Michael Harvanek , Ulrich Hopp , Yutaka Ihara , Steven Kahn , William Ketzeback , Scott J. Kleinman , Wolfram Kollatschny , Jurek Krzesiński , Giorgos Leloudas , Daniel C. Long , John Lucey , Elena Malanushenko , Viktor Malanushenko , Russet J. McMillan , Christopher W. Morgan , Tomoki Morokuma , Atsuko Nitta , Linda Ostman , Kaike Pan , A. Kathy Romer , Gabrelle Saurage , Katie Schlesinger , Stephanie A. Snedden , Jesper Sollerman , Maximilian Stritzinger , Linda C. Watson , Shannon Watters , J. Craig Wheeler , Donald York