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Normal or transitional? The evolution and properties of two type Ia supernovae in the Virgo cluster

Type Ia supernovae (SNe Ia) are among the most precise cosmological distance indicators used to study the expansion history of the Universe. The vast increase of SN Ia data due to large-scale astrophysical surveys has led to the discovery…

High Energy Astrophysical Phenomena · Physics 2026-02-25 L. Izzo , C. Gall , N. Khetan , N. Earl , J. Hjorth , W. B. Hoogendam , Y. Q. Ni , A. Sedgewick , S. M. Ward , Y. Zenati , K. Auchettl , S. Bhattacharjee , S. Benetti , M. Branchesi , E. Cappellaro , A. Catapano , K. C. Chambers , D. A. Coulter , K. W. Davis , M. Della Valle , S. Dhawan , T. de Boer , G. Dimitriadis , R. J. Foley , M. Fulton , H. Gao , W. J. Hon , M. E. Huber , D. O. Jones , C. D. Kilpatrick , C. C. Lin , T. B. Lowe , E. A. Magnier , K. S. Mandel , R. Margutti , G. Narayan , P. Ochner , Y. C. Pan , A. Reguitti , C. Rojas-Bravo , M. Siebert , S. J. Smartt , K. W. Smith , S. Srivastav , J. J. Swift , K. Taggart , G. Terreran , S. Thorp , L. Tomasella , R. J. Wainscoat

The Dependence of Type Ia Supernova Luminosities on their Host Galaxies

(Abridged) Precision cosmology with Type Ia supernovae (SNe Ia) makes use of the fact that SN Ia luminosities depend on their light-curve shapes and colours. Using Supernova Legacy Survey (SNLS) and other data, we show that there is an…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 M. Sullivan , A. Conley , D. A. Howell , J. D. Neill , P. Astier , C. Balland , S. Basa , R. G. Carlberg , D. Fouchez , J. Guy , D. Hardin , I. M. Hook , R. Pain , N. Palanque-Delabrouille , K. M. Perrett , C. J. Pritchet , N. Regnault , J. Rich , V. Ruhlmann-Kleider , S. Baumont , E. Hsiao , T. Kronborg , C. Lidman , S. Perlmutter , E. S. Walker

A Swift Fix II: Physical Parameters of Type I Superluminous Supernovae

In November 2020, the Swift team announced a major update to the calibration of the UltraViolet and Optical Telescope (UVOT) data to correct for the gradual loss of sensitivity over time. Beginning in roughly 2015, the correction affected…

High Energy Astrophysical Phenomena · Physics 2025-09-12 Jason T. Hinkle , Benjamin J. Shappee , Michael A. Tucker

A new approach for obtaining cosmological constraints from Type Ia Supernovae using Approximate Bayesian Computation

Cosmological parameter estimation techniques that robustly account for systematic measurement uncertainties will be crucial for the next generation of cosmological surveys. We present a new analysis method, superABC, for obtaining…

Cosmology and Nongalactic Astrophysics · Physics 2016-11-11 Elise Jennings , Rachel Wolf , Masao Sako

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline and Light Curve Data Release

We present griz light curves of 251 Type Ia Supernovae (SNe Ia) from the first 3 years of the Dark Energy Survey Supernova Program's (DES-SN) spectroscopically classified sample. The photometric pipeline described in this paper produces the…

Instrumentation and Methods for Astrophysics · Physics 2019-06-04 D. Brout , M. Sako , D. Scolnic , R. Kessler , C. B. D'Andrea , T. M. Davis , S. R. Hinton , A. G. Kim , J. Lasker , E. Macaulay , A. Möller , R. C. Nichol , M. Smith , M. Sullivan , R. C. Wolf , S. Allam , B. A. Bassett , P. Brown , F. J. Castander , M. Childress , R. J. Foley , L. Galbany , K. Herner , E. Kasai , M. March , E. Morganson , P. Nugent , Y. -C. Pan , R. C. Thomas , B. E. Tucker , W. Wester , T. M. C. Abbott , J. Annis , S. Avila , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , M. Crocce , C. E. Cunha , L. N. da Costa , C. Davis , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , T. F. Eifler , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , D. A. Goldstein , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , O. Lahav , T. S. Li , M. Lima , J. L. Marshall , P. Martini , R. Miquel , B. Nord , A. A. Plazas , A. Roodman , E. S. Rykoff , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , A. R. Walker , B. Yanny , Y. Zhang

The Effect of Weak Lensing on Distance Estimates from Supernovae

Using a sample of 608 Type Ia supernovae from the SDSS-II and BOSS surveys, combined with a sample of foreground galaxies from SDSS-II, we estimate the weak lensing convergence for each supernova line-of-sight. We find that the correlation…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-25 Mathew Smith , David J. Bacon , Robert C. Nichol , Heather Campbell , Chris Clarkson , Roy Maartens , Chris B. D'Andrea , Bruce A. Bassett , David Cinabro , David A. Finley , Joshua A. Frieman , Lluis Galbany , Peter M. Garnavich , Matthew D. Olmstead , Donald P. Schneider , Charles Shapiro , Jesper Sollerman

Late-time Flattening of Type Ia Supernova Light Curves: Constraints From SN 2014J in M82

The very nearby Type Ia supernova 2014J in M82 offers a rare opportunity to study the physics of thermonuclear supernovae at extremely late phases ($\gtrsim$800 days). Using the Hubble Space Telescope (HST), we obtained six epochs of high…

Solar and Stellar Astrophysics · Physics 2018-01-24 Yi Yang , Lifan Wang , Dietrich Baade , Peter J. Brown , Aleksandar Cikota , Misty Cracraft , Peter A. Hoflich , Justyn Maund , Ferdinando Patat , William B. Sparks , Jason Spyromilio , Heloise F. Stevance , Xiaofeng Wang , J. Craig Wheeler

The Supernova Legacy Survey 3-year sample: Type Ia Supernovae photometric distances and cosmological constraints

We present photometric properties and distance measurements of 252 high redshift Type Ia supernovae (0.15 < z < 1.1) discovered during the first three years of the Supernova Legacy Survey (SNLS). These events were detected and their…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 J. Guy , M. Sullivan , A. Conley , N. Regnault , P. Astier , C. Balland , S. Basa , R. G. Carlberg , D. Fouchez , D. Hardin , I. M. Hook , D. A. Howell , R. Pain , N. Palanque-Delabrouille , K. M. Perrett , C. J. Pritchet , J. Rich , V. Ruhlmann-Kleider , D. Balam , S. Baumont , R. S. Ellis , S. Fabbro , H. K. Fakhouri , N. Fourmanoit , S. Gonzalez-Gaitan , M. L. Graham , E. Hsiao , T. Kronborg , C. Lidman , A. M. Mourao , S. Perlmutter , P. Ripoche , N. Suzuki , E. S. Walker

Environmental Dependence of Type Ia Supernova Luminosities from the YONSEI Supernova Catalog

There is growing evidence for the dependence of Type Ia supernova (SN Ia) luminosities on their environments. While the impact of this trend on estimating cosmological parameters is widely acknowledged, the origin of this correlation is…

Cosmology and Nongalactic Astrophysics · Physics 2020-01-08 Young-Lo Kim , Yijung Kang , Young-Wook Lee

On the origin of the environmental step: A BayeSN view of the ZTF SN Ia DR2

Astrophysical variabilities of Type Ia supernovae (SNe Ia), such as their link with their birth environment, are now one of the leading sources of systematic uncertainties on the measurement of the dark energy equation-of-state parameter…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-12 Madeleine Ginolin , Matthew Grayling , Kaisey S. Mandel , Maximilian Autenrieth , Benjamin M. Boyd , Aaron Do , Lisa Kelsey , Matthew O'Callaghan

Supernova Siblings: Assessing the Consistency of Properties of Type Ia Supernovae that Share the Same Parent Galaxies

While many studies have shown a correlation between properties of the light curves of Type Ia SN (SNe Ia) and properties of their host galaxies, it remains unclear what is driving these correlations. We introduce a new direct method to…

Astrophysics of Galaxies · Physics 2020-06-17 D. Scolnic , M. Smith , A. Massiah , P. Wiseman , D. Brout , R. Kessler , T. M. Davis , R. J. Foley , L. Galbany , S. R. Hinton , R. Hounsell , L. Kelsey , C. Lidman , R. Morgan , R. C. Nichol , A. Möller , B. Popovic , M. Sako , M. Sullivan , B. P. Thomas , T. M. C. Abbott , M. Aguena , S. Allam , J. Annis , S. Avila , K. Bechtol , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , D. Carollo , M. Carrasco Kind , J. Carretero , M. Costanzi , L. N. da Costa , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , A. Drlica-Wagner , K. Eckert , T. F. Eifler , S. Everett , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , K. Glazebrook , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , G. F. Lewis , T. S. Li , M. Lima , E. Macaulay , M. A. G. Maia , J. L. Marshall , F. Menanteau , R. Miquel , A. Palmese , F. Paz-Chinchón , A. A. Plazas , M. Pursiainen , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , N. E. Sommer , E. Suchyta , M. E. C. Swanson , G. Tarle , B. E. Tucker , T. N. Varga , A. R. Walker , R. Wilkinson

Improving Dark Energy Constraints with High Redshift Type Ia Supernovae from CANDELS and CLASH

Aims. We investigate the degree of improvement in dark energy constraints that can be achieved by extending Type Ia Supernova (SN Ia) samples to redshifts z > 1.5 with the Hubble Space Telescope (HST), particularly in the ongoing CANDELS…

Cosmology and Nongalactic Astrophysics · Physics 2013-12-10 Vincenzo Salzano , Steven A. Rodney , Irene Sendra , Ruth Lazkoz , Adam G. Riess , Marc Postman , Tom Broadhurst , Dan Coe

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

Supernova / Acceleration Probe: A Satellite Experiment to Study the Nature of the Dark Energy

The Supernova / Acceleration Probe (SNAP) is a proposed space-based experiment designed to study the dark energy and alternative explanations of the acceleration of the Universe's expansion by performing a series of complementary…

Astrophysics · Physics 2009-09-29 SNAP Collaboration , G. Aldering , W. Althouse , R. Amanullah , J. Annis , P. Astier , C. Baltay , E. Barrelet , S. Basa , C. Bebek , L. Bergstrom , G. Bernstein , M. Bester , B. Bigelow , R. Blandford , R. Bohlin , A. Bonissent , C. Bower , M. Brown , M. Campbell , W. Carithers , E. Commins , W. Craig , C. Day , F. DeJongh , S. Deustua , T. Diehl , S. Dodelson , A. Ealet , R. Ellis , W. Emmet , D. Fouchez , J. Frieman , A. Fruchter , D. Gerdes , L. Gladney , G. Goldhaber , A. Goobar , D. Groom , H. Heetderks , M. Hoff , S. Holland , M. Huffer , L. Hui , D. Huterer , B. Jain , P. Jelinsky , A. Karcher , S. Kent , S. Kahn , A. Kim , W. Kolbe , B. Krieger , G. Kushner , N. Kuznetsova , R. Lafever , J. Lamoureux , M. Lampton , O. Le Fevre , M. Levi , P. Limon , H. Lin , E. Linder , S. Loken , W. Lorenzon , R. Malina , J. Marriner , P. Marshall , R. Massey , A. Mazure , T. McKay , S. McKee , R. Miquel , N. Morgan , E. Mortsell , N. Mostek , S. Mufson , J. Musser , P. Nugent , H. Oluseyi , R. Pain , N. Palaio , D. Pankow , J. Peoples , S. Perlmutter , E. Prieto , D. Rabinowitz , A. Refregier , J. Rhodes , N. Roe , D. Rusin , V. Scarpine , M. Schubnell , M. Sholl , G. Smadja , R. M. Smith , G. Smoot , J. Snyder , A. Spadafora , A. Stebbins , C. Stoughton , A. Szymkowiak , G. Tarle , K. Taylor , A. Tilquin , A. Tomasch , D. Tucker , D. Vincent , H. von der Lippe , J-P. Walder , G. Wang , W. Wester

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

The Effect of Environment on Type Ia Supernovae in the Dark Energy Survey Three-Year Cosmological Sample

Analyses of type Ia supernovae (SNe Ia) have found puzzling correlations between their standardised luminosities and host galaxy properties: SNe Ia in high-mass, passive hosts appear brighter than those in lower-mass, star-forming hosts. We…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-27 L. Kelsey , M. Sullivan , M. Smith , P. Wiseman , D. Brout , T. M. Davis , C. Frohmaier , L. Galbany , M. Grayling , C. P. Gutiérrez , S. R. Hinton , R. Kessler , C. Lidman , A. Möller , M. Sako , D. Scolnic , S. A. Uddin , M. Vincenzi , T. M. C. Abbott , M. Aguena , S. Allam , J. Annis , S. Avila , D. Bacon , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , M. Costanzi , L. N. da Costa , S. Desai , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , A. Ferté , B. Flaugher , P. Fosalba , J. García-Bellido , D. W. Gerdes , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , D. L. Hollowood , K. Honscheid , D. J. James , A. G. Kim , K. Kuehn , N. Kuropatkin , O. Lahav , M. Lima , J. L. Marshall , P. Martini , F. Menanteau , R. Miquel , R. Morgan , R. L. C. Ogando , A. Palmese , F. Paz-Chinchón , A. A. Plazas , A. K. Romer , C. Sánchez , E. Sanchez , S. Serrano , I. Sevilla-Noarbe , E. Suchyta , G. Tarle , D. Thomas , C. To , T. N. Varga , A. R. Walker , R. D. Wilkinson

Theoretical Clues to the Ultraviolet Diversity of Type Ia Supernovae

The effect of metallicity on the observed light of Type Ia supernovae (SNe Ia) could lead to systematic errors as the absolute magnitudes of local and distant SNe Ia are compared to measure luminosity distances and determine cosmological…

Solar and Stellar Astrophysics · Physics 2015-08-19 Peter J. Brown , E. Baron , Peter Milne , Peter W. A. Roming , Lifan Wang

The Dark Energy Survey Supernova Program: Cosmological biases from supernova photometric classification

Cosmological analyses of samples of photometrically-identified Type Ia supernovae (SNe Ia) depend on understanding the effects of 'contamination' from core-collapse and peculiar SN Ia events. We employ a rigorous analysis on…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-15 M. Vincenzi , M. Sullivan , A. Möller , P. Armstrong , B. A. Bassett , D. Brout , D. Carollo , A. Carr , T. M. Davis , C. Frohmaier , L. Galbany , K. Glazebrook , O. Graur , L. Kelsey , R. Kessler , E. Kovacs , G. F. Lewis , C. Lidman , U. Malik , R. C. Nichol , B. Popovic , M. Sako , D. Scolnic , M. Smith , G. Taylor , B. E. Tucker , P. Wiseman , M. Aguena , S. Allam , J. Annis , J. Asorey , D. Bacon , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , J. Carretero , F. J. Castander , M. Costanzi , L. N. da Costa , M. E. S. Pereira , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , D. W. Gerdes , D. Gruen , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , O. Lahav , T. S. Li , M. Lima , M. A. G. Maia , J. L. Marshall , R. Miquel , R. Morgan , R. L. C. Ogando , A. Palmese , F. Paz-Chinchón , A. Pieres , A. A. Plazas Malagón , K. Reil , A. Roodman , E. Sanchez , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , E. Suchyta , G. Tarle , C. To , T. N. Varga , J. Weller , R. D. Wilkinson

Photometric classification of type Ia supernovae in the SuperNova Legacy Survey with supervised learning

In the era of large astronomical surveys, photometric classification of supernovae (SNe) has become an important research field due to limited spectroscopic resources for candidate follow-up and classification. In this work, we present a…

Instrumentation and Methods for Astrophysics · Physics 2016-12-14 A. Möller , V. Ruhlmann-Kleider , C. Leloup , J. Neveu , N. Palanque-Delabrouille , J. Rich , R. Carlberg , C. Lidman , C. Pritchet

Extinction Correction for Type Ia Supernova Rates. I. The Model

In this paper we present and discuss a new Monte Carlo approach aimed at correcting the observed Supernova (SN) rates for the effects of host galaxy dust extinction. The problem is addressed in a general way and the model includes SN…

Astrophysics · Physics 2009-11-13 M. Riello , F. Patat