Related papers: ZTF SN Ia DR2: Overview

Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Project

This is the first release of optical spectroscopic data of low-redshift Type Ia supernovae (SNe Ia) by the Carnegie Supernova Project including 604 previously unpublished spectra of 93 SNe Ia. The observations cover a range of phases from…

Cosmology and Nongalactic Astrophysics · Physics 2015-02-05 Gastón Folatelli , Nidia Morrell , Mark M. Phillips , Eric Hsiao , Abdo Campillay , Carlos Contreras , Sergio Castellón , Mario Hamuy , Wojtek Krzeminski , Miguel Roth , Maximilian Stritzinger , Christopher R. Burns , Wendy L. Freedman , Barry F. Madore , David Murphy , S. E. Persson , José L. Prieto , Nicholas B. Suntzeff , Kevin Krisciunas , Joseph P. Anderson , Francisco Förster , José Maza , Giuliano Pignata , P. Andrea Rojas , Luis Boldt , Francisco Salgado , Pamela Wyatt , Felipe Olivares E. , Avishay Gal-Yam , Masao Sako

Berkeley Supernova Ia Program I: Observations, Data Reduction, and Spectroscopic Sample of 582 Low-Redshift Type Ia Supernovae

In this first paper in a series we present 1298 low-redshift (z\leq0.2) optical spectra of 582 Type Ia supernovae (SNe Ia) observed from 1989 through 2008 as part of the Berkeley SN Ia Program (BSNIP). 584 spectra of 199 SNe Ia have…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Jeffrey M. Silverman , Ryan J. Foley , Alexei V. Filippenko , Mohan Ganeshalingam , Aaron J. Barth , Ryan Chornock , Christopher V. Griffith , Jason J. Kong , Nicholas Lee , Douglas C. Leonard , Thomas Matheson , Emily G. Miller , Thea N. Steele , Brian J. Barris , Joshua S. Bloom , Bethany E. Cobb , Alison L. Coil , Louis-Benoit Desroches , Elinor L. Gates , Luis C. Ho , Saurabh W. Jha , Michael T. Kandrashoff , Weidong Li , Kaisey S. Mandel , Maryam Modjaz , Matthew R. Moore , Robin E. Mostardi , Marina S. Papenkova , Sung Park , Daniel A. Perley , Dovi Poznanski , Cassie A. Reuter , James Scala , Franklin J. D. Serduke , Joseph C. Shields , Brandon J. Swift , John L. Tonry , Schuyler D. Van Dyk , Xiaofeng Wang , Diane S. Wong

Spectroscopic detection of Type Ia Supernovae in the Sloan Digital Sky Survey

We present the results of a novel new search of the first data-release from the Sloan Digital Sky Survey (SDSS-DR1) for the spectra of supernovae. The use of large spectroscopic galaxy surveys offers the prospect of obtaining improved…

Astrophysics · Physics 2009-11-10 Darren S. Madgwick , Paul Hewett , Daniel Mortlock , Lifan Wang

ZTF SN~Ia DR2: Cosmology-independent constraints on Type Ia supernova standardisation from supernova siblings

Understanding Type Ia supernovae (SNe~Ia) and the empirical standardisation relations that make them excellent distance indicators is vital to improving cosmological constraints. SN~Ia ``siblings", i.e. two or more SNe~Ia in the same host…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-29 S. Dhawan , E. Mortsell , J. Johansson , A. Goobar , M. Rigault , M. Smith , K. Maguire , J. Nordin , G. Dimitriadis , P. E. Nugent , L. Galbany , J. Sollerman , T. de Jaeger , J. H. Terwel , Y. -L. Kim , Umut Burgaz , G. Helou , J. Purdum , S. L. Groom , R. Laher , B. Healy

Type-Ia Supernova Rates to Redshift 2.4 from CLASH: the Cluster Lensing And Supernova survey with Hubble

We present the supernova (SN) sample and Type-Ia SN (SN Ia) rates from the Cluster Lensing And Supernova survey with Hubble (CLASH). Using the Advanced Camera for Surveys and the Wide Field Camera 3 on the Hubble Space Telescope (HST), we…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 O. Graur , S. A. Rodney , D. Maoz , A. G. Riess , S. W. Jha , M. Postman , T. Dahlen , T. W. -S. Holoien , C. McCully , B. Patel , L. -G. Strolger , N. Benitez , D. Coe , S. Jouvel , E. Medezinski , A. Molino , M. Nonino , L. Bradley , A. Koekemoer , I. Balestra , S. B. Cenko , K. I. Clubb , M. E. Dickinson , A. V. Filippenko , T. F. Frederiksen , P. Garnavich , J. Hjorth , D. O. Jones , B. Leibundgut , T. Matheson , B. Mobasher , P. Rosati , J. M. Silverman , V. U , K. Jedruszczuk , C. Li , K. Lin , M. Mirmelstein , J. Neustadt , A. Ovadia , E. H. Rogers

Constraints on dark energy with the LOSS SN Ia sample

We present a cosmological analysis of the Lick Observatory Supernova Search (LOSS) Type Ia supernova (SN Ia) photometry sample introduced by Ganeshalingam et al. (2010). These SNe provide an effective anchor point to estimate cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-04 Mohan Ganeshalingam , Weidong Li , Alexei V. Filippenko

The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample

We present optical light curves, redshifts, and classifications for 365 spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium Deep Survey. We detail improvements to the PS1 SN photometry,…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-13 D. M. Scolnic , D. O. Jones , A. Rest , Y. C. Pan , R. Chornock , R. J. Foley , M. E. Huber , R. Kessler , G. Narayan , A. G. Riess , S. Rodney , E. Berger , D. J. Brout , P. J. Challis , M. Drout , D. Finkbeiner , R. Lunnan , R. P. Kirshner , N. E. Sanders , E. Schlafly , S. Smartt , C. W. Stubbs , J. Tonry , W. M. Wood-Vasey , M. Foley , J. Hand , E. Johnson , W. S. Burgett , K. C. Chambers , P. W. Draper , K. W. Hodapp , N. Kaiser , R. P. Kudritzki , E. A. Magnier , N. Metcalfe , F. Bresolin , E. Gall , R. Kotak , M. McCrum , K. W. Smith

Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2

We present an updated version of the Multicolor Light Curve Shape method to measure distances to type Ia supernovae (SN Ia), incorporating new procedures for K-correction and extinction corrections. We also develop a simple model to…

Astrophysics · Physics 2008-11-26 Saurabh Jha , Adam G. Riess , Robert P. Kirshner

ZTF SN Ia DR2: An environmental study of Type Ia supernovae using host galaxy image decomposition

The second data release of Type Ia supernovae (SNe Ia) observed by the Zwicky Transient Facility has provided a homogeneous sample of 3628 SNe Ia with photometric and spectral information. This unprecedented sample size enables us to better…

Astrophysics of Galaxies · Physics 2025-02-19 R. Senzel , K. Maguire , U. Burgaz , G. Dimitriadis , M. Rigault , A. Goobar , J. Johansson , M. Smith , M. Deckers , L. Galbany , M. Ginolin , L. Harvey , Y. -L. Kim , T. E. Muller-Bravo , P. Nugent , P. Rosnet , J. Sollerman , J. H. Terwel , R. R. Laher , D. Reiley , B. Rusholme

Improved Cosmological Constraints from New, Old and Combined Supernova Datasets

We present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compilations. This ``Union'' compilation of 414 SN Ia, which…

Astrophysics · Physics 2008-12-18 M. Kowalski , D. Rubin , G. Aldering , R. J. Agostinho , A. Amadon , R. Amanullah , C. Balland , K. Barbary , G. Blanc , P. J. Challis , A. Conley , N. V. Connolly , R. Covarrubias , K. S. Dawson , S. E. Deustua , R. Ellis , S. Fabbro , V. Fadeyev , X. Fan , B. Farris , G. Folatelli , B. L. Frye , G. Garavini , E. L. Gates , L. Germany , G. Goldhaber , B. Goldman , A. Goobar , D. E. Groom , J. Haissinski , D. Hardin , I. Hook , S. Kent , A. G. Kim , R. A. Knop , C. Lidman , E. V. Linder , J. Mendez , J. Meyers , G. J. Miller , M. Moniez , A. M. Mourao , H. Newberg , S. Nobili , P. E. Nugent , R. Pain , O. Perdereau , S. Perlmutter , M. M. Phillips , V. Prasad , R. Quimby , N. Regnault , J. Rich , E. P. Rubenstein , P. Ruiz-Lapuente , F. D. Santos , B. E. Schaefer , R. A. Schommer , R. C. Smith , A. M. Soderberg , A. L. Spadafora , L. -G. Strolger , M. Strovink , N. B. Suntzeff , N. Suzuki , R. C. Thomas , N. A. Walton , L. Wang , W. M. Wood-Vasey , J. L. Yun

The Foundation Supernova Survey: Photospheric Velocity Correlations in Type Ia Supernovae

The ejecta velocities of type-Ia supernovae (SNe Ia), as measured by the Si II $\lambda 6355$ line, have been shown to correlate with other supernova properties, including color and standardized luminosity. We investigate these results…

High Energy Astrophysical Phenomena · Physics 2022-01-05 Kyle G. Dettman , Saurabh W. Jha , Mi Dai , Ryan J. Foley , Armin Rest , Daniel M. Scolnic , Matthew R. Siebert , K. C. Chambers , D. A. Coulter , M. E. Huber , E. Johnson , D. O. Jones , C. D. Kilpatrick , R. P. Kirshner , Y. -C. Pan , A. G. Riess , A. S. B. Schultz

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

Reassessing the ZTF Volume-Limited Type Ia Supernova Sample and Its Implications for Continuous, Dust-Dependent Models of Intrinsic Scatter

The ZTF DR2 includes light curves of 3628 Type Ia supernovae (SNe Ia), making it the largest low-redshift SNe Ia sample available. One central question for analyses of SNe Ia is whether the remaining diversity of standardized luminosities…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-09 Yukei S. Murakami , Daniel Scolnic

ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments

The unprecedented statistics of detected Type Ia supernovae (SNe Ia) brought by the Zwicky Transient Facility enables us to probe the impact of the Large-Scale Structure on the properties of these objects. The goal of this paper is to…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-19 M. Aubert , P. Rosnet , B. Popovic , F. Ruppin , M. Smith , M. Rigault , G. Dimitriadis , A. Goobar , J. Johansson , C. Barjou-Delayre , U. Burgaz , B. Carreres , F. Feinstein , D. Fouchez , L. Galbany , M. Ginolin , T. de Jaeger , M. M. Kasliwal , Y. -L. Kim , L. Lacroix , F. J. Masci , T. E. Müller-Bravo , B. Racine , C. Ravoux , N. Regnault , R. L. Riddle , D. Rosselli , B. Rusholme , R. Smith , J. Sollerman , J. H. Terwel , A. Townsend

Towards Precision Photometric Type Ia Supernova Cosmology with Machine Learning

The revolutionary discovery of dark energy and accelerating cosmic expansion was made with just 42 type Ia supernovae (SNe Ia) in 1999. Since then, large synoptic surveys, e.g., Dark Energy Survey (DES), have observed thousands more SNe Ia…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-10 Helen Qu

The Rate of Type Ia Supernovae at z~0.2 from SDSS-I Overlapping Fields

In the course of the Sloan Digital Sky Survey (SDSS-I), a large fraction of the surveyed area was observed more than once due to field tiling overlap, usually at different epochs. We utilize some of these data to perform a supernova (SN)…

Astrophysics · Physics 2009-11-13 Assaf Horesh , Dovi Poznanski , Eran O. Ofek , Dan Maoz

NTT and NOT spectroscopy of SDSS-II supernovae

Context. The SDSS-II Supernova Survey, conducted between 2005 and 2007, was designed to detect a large number of Type Ia supernovae (SNe Ia) around z~0.2, the redshift "gap" between low-z and high-z SN searches. The survey has provided…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 L. Ostman , J. Nordin , A. Goobar , R. Amanullah , M. Smith , J. Sollerman , V. Stanishev , M. D. Stritzinger , B. A. Bassett , T. M. Davis , E. Edmondson , J. A. Frieman , P. M. Garnavich , H. Lampeitl , G. Leloudas , J. Marriner , R. C. Nichol , K. Romer , M. Sako , D. P. Schneider , C. Zheng

Lightcurve Modelling of 2,205 ZTF DR2 Type~Ia Supernovae: Implications for SN Ia Physics and Cosmology

We fit the multi-band light curves of 2,205 Type Ia supernovae (SNe~Ia) from the Zwicky Transient Facility DR2 with a one-zone radioactive decay model with a phenomenological addition to include Fe recombination physics. We find a strong…

High Energy Astrophysical Phenomena · Physics 2026-02-04 Nikhil Sarin , Ellen Lindsjö , Lisa Kelsey , Matthew Grayling , Jesper Sollerman , Steve Schulze , Adam Miller , Madeleine Ginolin , Erin Hayes , Conor Omand , Kaisey Mandel , Aaron Do , Suhail Dhawan , Joel Johansson

Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution

We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current epoch of cosmic acceleration. These…

Astrophysics · Physics 2008-11-26 Adam G. Riess , Louis-Gregory Strolger , John Tonry , Stefano Casertano , Henry C. Ferguson , Bahram Mobasher , Peter Challis , Alexei V. Filippenko , Saurabh Jha , Weidong Li , Ryan Chornock , Robert P. Kirshner , Bruno Leibundgut , Mark Dickinson , Mario Livio , Mauro Giavalisco , Charles C. Steidel , Narciso Benitez , Zlatan Tsvetanov

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