Related papers: Improved Dark Energy Constraints from ~100 New CfA…

Improved Treatment of Host-Galaxy Correlations in Cosmological Analyses With Type Ia Supernovae

Improving the use of Type Ia supernovae (SNIa) as standard candles requires a better approach to incorporate the relationship between SNIa and the properties of their host galaxies. Using a spectroscopically-confirmed sample of $\sim$1600…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-02 Brodie Popovic , Dillon Brout , Richard Kessler , Dan Scolnic , Lisa Lu

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

The Pantheon+ Analysis: Forward-Modeling the Dust and Intrinsic Colour Distributions of Type Ia Supernovae, and Quantifying their Impact on Cosmological Inferences

Recent studies have shown that the observed colour distributions of Type Ia SNe (SNIa) are well-described by a combination of distributions from dust and intrinsic colour. Here we present a new forward-modeling fitting method (Dust2Dust) to…

Cosmology and Nongalactic Astrophysics · Physics 2022-12-06 Brodie Popovic , Dillon Brout , Richard Kessler , Daniel Scolnic

Cosmological Constraints from Measurements of Type Ia Supernovae discovered during the first 1.5 years of the Pan-STARRS1 Survey

We present griz light curves of 146 spectroscopically confirmed Type Ia Supernovae ($0.03 < z <0.65$) discovered during the first 1.5 years of the Pan-STARRS1 Medium Deep Survey. The Pan-STARRS1 natural photometric system is determined by a…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 A. Rest , D. Scolnic , R. J. Foley , M. E. Huber , R. Chornock , G. Narayan , J. L. Tonry , E. Berger , A. M. Soderberg , C. W. Stubbs , A. Riess , R. P. Kirshner , S. J. Smartt , E. Schlafly , S. Rodney , M. T. Botticella , D. Brout , P. Challis , I. Czekala , M. Drout , M. J. Hudson , R. Kotak , C. Leibler , R. Lunnan , G. H. Marion , M. McCrum , D. Milisavljevic , A. Pastorello , N. E. Sanders , K. Smith , E. Stafford , D. Thilker , S. Valenti , W. M. Wood-Vasey , Z. Zheng , W. S. Burgett , K. C. Chambers , L. Denneau , P. W. Draper , H. Flewelling , K. W. Hodapp , N. Kaiser , R. P. Kudritzki , E. A. Magnier , N. Metcalfe , P. A. Price , W. Sweeney , R. Wainscoat , C. Waters

Improved Constraints on Type Ia Supernova Host Galaxy Properties using Multi-Wavelength Photometry and their Correlations with Supernova Properties

We improve estimates of stellar mass and mass-weighted average age of Type Ia supernova (SN Ia) host galaxies by combining UV and near-IR photometry with optical photometry in our analysis. Using 206 SNe Ia drawn from the full three-year…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Ravi R. Gupta , Chris B. D'Andrea , Masao Sako , Charlie Conroy , Mathew Smith , Bruce Bassett , Joshua A. Frieman , Peter M. Garnavich , Saurabh W. Jha , Richard Kessler , Hubert Lampeitl , John Marriner , Robert C. Nichol , Donald P. Schneider

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

An Exploration of Heterogeneity in Supernova Type Ia Samples

We examine three SNe Type Ia datasets: Union2.1, JLA and Panstarrs to check their consistency using cosmology blind statistical analyses as well as cosmological parameter fitting. We find that Panstarrs dataset is the most stable of the…

Cosmology and Nongalactic Astrophysics · Physics 2017-06-28 Ujjaini Alam , Jeremie Lasue

Incorporating Astrophysical Systematics into a Generalized Likelihood for Cosmology with Type Ia Supernovae

Traditional cosmological inference using Type Ia supernovae (SNeIa) have used stretch- and color-corrected fits of SN Ia light curves and assumed a resulting fiducial mean and symmetric intrinsic dispersion for the resulting relative…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-17 Kara A. Ponder , W. Michael Wood-Vasey , Andrew R. Zentner

Cosmological constraints from supernova data set with corrected redshift

Observations of distant type Ia supernovae (SNe Ia), used as standard candles, support the notion that the Cosmos is filled with a mysterious form of energy, the dark energy. The constraints on cosmological parameters derived from data of…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-29 A. Feoli , L. Mancini , V. Rillo , M. Grasso

Using Spectral Flux Ratios to Standardize SN Ia Luminosities

We present a new method to standardize Type Ia supernova (SN Ia) luminosities to ~<0.13 magnitudes using flux ratios from a single flux-calibrated spectrum per SN. Using Nearby Supernova Factory spectrophotomery of 58 SNe Ia, we performed…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 S. Bailey , G. Aldering , P. Antilogus , C. Aragon , C. Baltay , S. Bongard , C. Buton , M. Childress , N. Chotard , Y. Copin , E. Gangler , S. Loken , P. Nugent , R. Pain , E. Pecontal , R. Pereira , S. Perlmutter , D. Rabinowitz , G. Rigaudier , K. Runge , R. Scalzo , G. Smadja , H. Swift , C. Tao , R. C. Thomas , C. Wu

ZTF SN Ia DR2: Evidence of Changing Dust Distributions With Redshift Using Type Ia Supernovae

Type Ia supernova (SNIa) are excellent probes of local distance, and the increasing sample sizes of SNIa have driven an increased need to study the associated systematic uncertainties and improve the standardisation methods in preparation…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-19 B. Popovic , M. Rigault , M. Smith , M. Ginolin , A. Goobar , W. D. Kenworthy , C. Ganot , F. Ruppin , G. Dimitriadis , J. Johansson , M. Amenouche , M. Aubert , C. Barjou-Delayre , U. Burgaz , B. Carreres , F. Feinstein , D. Fouchez , L. Galbany , T. de Jaeger , Y. -L. Kim , L. Lacroix , P. E. Nugent , B. Racine , D. Rosselli , P. Rosnet , J. Sollerman , D. Hale , R. Laher , T. E. Müller-Bravo , R. Reed , B. Rusholme , J. Terwel

The Pantheon+ Analysis: Cosmological Constraints

We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from $z=0.001$ to 2.26. This work features an increased sample size,…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-16 Dillon Brout , Dan Scolnic , Brodie Popovic , Adam G. Riess , Joe Zuntz , Rick Kessler , Anthony Carr , Tamara M. Davis , Samuel Hinton , David Jones , W. D'Arcy Kenworthy , Erik R. Peterson , Khaled Said , Georgie Taylor , Noor Ali , Patrick Armstrong , Pranav Charvu , Arianna Dwomoh , Antonella Palmese , Helen Qu , Benjamin M. Rose , Christopher W. Stubbs , Maria Vincenzi , Charlotte M. Wood , Peter J. Brown , Rebecca Chen , Ken Chambers , David A. Coulter , Mi Dai , Georgios Dimitriadis , Alexei V. Filippenko , Ryan J. Foley , Saurabh W. Jha , Lisa Kelsey , Robert P. Kirshner , Anais Möller , Jessie Muir , Seshadri Nadathur , Yen-Chen Pan , Armin Rest , Cesar Rojas-Bravo , Masao Sako , Matthew R. Siebert , Mat Smith , Benjamin E. Stahl , Phil Wiseman

The influence of Host Galaxies in Type Ia Supernova Cosmology

We use a sample of 1338 spectroscopically confirmed and photometrically classified Type Ia Supernovae (SNe Ia), sourced from the CSP, CfA, SDSS-II, and SNLS supernova samples, to examine the relationships between SNe Ia and the galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-18 Syed A. Uddin , Jeremy Mould , Chris Lidman , Vanina Ruhlmann-Kleider , Bonnie R. Zhang

A New Insight into the Classification of Type Ia Supernovae

Type Ia Supernovae (SNe Ia) spectra are compared regarding the coefficient of the largest wavelet scale in their decomposition. Two distinct subgroups were identified and their occurrence is discussed in light of use of SNe Ia as…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Vladan Arsenijevic

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: The Effect of Host Galaxy Properties on Supernova Luminosity

We present improved photometric measurements for the host galaxies of 206 spectroscopically confirmed type Ia supernovae discovered by the Dark Energy Survey Supernova Program (DES-SN) and used in the first DES-SN cosmological analysis.…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-22 M. Smith , M. Sullivan , P. Wiseman , R. Kessler , D. Scolnic , D. Brout , C. B. D'Andrea , T. M. Davis , R. J. Foley , C. Frohmaier , L. Galbany , R. R. Gupta , C. P. Gutiérrez , S. R. Hinton , L. Kelsey , C. Lidman , E. Macaulay , A. Möller , R. C. Nichol , P. Nugent , A. Palmese , M. Pursiainen , M. Sako , R. C. Thomas , B. E. Tucker , D. Carollo , G. F. Lewis , N. E. Sommer , T. M. C. Abbott , M. Aguena , S. Allam , S. Avila , E. Bertin , S. Bhargava , D. Brooks , E. Buckley-Geer , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , M. Costanzi , L. N. da Costa , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , T. F. Eifler , S. Everett , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , E. Gaztanaga , K. Glazebrook , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , D. J. James , E. Krause , K. Kuehn , N. Kuropatkin , M. Lima , N. MacCrann , M. A. G. Maia , J. L. Marshall , P. Martini , P. Melchior , F. Menanteau , R. Miquel , F. Paz-Chinchón , A. A. Plazas , A. K. Romer , A. Roodman , E. S. Rykoff , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , T. N. Varga , A. R. Walker , : , The Dark Energy Survey Collaboration

Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey

We present constraints on the dark energy equation-of-state parameter, w=P/(rho c^2), using 60 Type Ia supernovae (SNe Ia) from the ESSENCE supernova survey. We derive a set of constraints on the nature of the dark energy assuming a flat…

Astrophysics · Physics 2008-11-26 W. M. Wood-Vasey , G. Miknaitis , C. W. Stubbs , S. Jha , A. G. Riess , P. M. Garnavich , R. P. Kirshner , C. Aguilera , A. C. Becker , J. W. Blackman , S. Blondin , P. Challis , A. Clocchiatti , A. Conley , R. Covarrubias , T. M. Davis , A. V. Filippenko , R. J. Foley , A. Garg , M. Hicken , K. Krisciunas , B. Leibundgut , W. Li , T. Matheson , A. Miceli , G. Narayan , G. Pignata , J. L. Prieto , A. Rest , M. E. Salvo , B. P. Schmidt , R. C. Smith , J. Sollerman , J. Spyromilio , J. L. Tonry , N. B. Suntzeff , A. Zenteno

The Dark Energy Survey Supernova Program: A Reanalysis Of Cosmology Results And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration

We present improved cosmological constraints from a re-analysis of the Dark Energy Survey (DES) 5-year sample of Type Ia supernovae (DES-SN5YR). This re-analysis includes an improved photometric cross-calibration, recent white dwarf…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-06 B. Popovic , P. Shah , W. D. Kenworthy , R. Kessler , T. M. Davis , A. Goobar , D. Scolnic , M. Vincenzi , P. Wiseman , R. Chen , E. Charleton , M. Acevedo , P. Armstrong , B. M. Boyd , D. Brout , R. Camilleri , J. Frieman , L. Galbany , M. Grayling , L. Kelsey , B. Rose , B. Sánchez , J. Lee , A. Möller , M. Smith , M. Sullivan , N. Shiamtanis , A. Alarcon , S. S. Allam , F. Andrade-Oliveira , S. Avila , D. Bacon , J. Blazek , S. Bocquet , D. Brooks , D. L. Burke , A. Carnero Rosell , J. Carretero , R. Cawthon , L. N. da Costa , M. E. da Silva Pereira , H. T. Diehl , S. Dodelson , P. Doel , S. Everett , C. Frohmaier , J. García-Bellido , D. Gruen , G. Gutierrez , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , D. J. James , N. Jeffrey , K. Kuehn , O. Lahav , S. Lee , C. Lidman , J. L. Marshall , J. Mena-Fernández , F. Menanteau , R. Miquel , J. Muir , J. Myles , R. L. C. Ogando , M. Paterno , A. A. Plazas Malagón , A. Porredon , J. Prat , R. C. Nichol , A. K. Romer , A. Roodman , E. Sanchez , D. Sanchez Cid , I. Sevilla-Noarbe , E. Suchyta , M. E. C. Swanson , C. To , D. L. Tucker , A. R. Walker , N. Weaverdyck

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

Robust and model-independent cosmological constraints from distance measurements

We present a systematic analysis of the cosmological constraints from the "Pantheon Sample" of 1048 Type Ia Supernovae (SNe Ia) in the redshift range $0.01<z<2.3$ compiled by Scolnic et al. (2018). Applying the flux-averaging method for…

Cosmology and Nongalactic Astrophysics · Physics 2019-07-10 Zhongxu Zhai , Yun Wang

Berkeley Supernova Ia Program III: Spectra Near Maximum Brightness Improve the Accuracy of Derived Distances to Type Ia Supernovae

In this third paper in a series we compare spectral feature measurements to photometric properties of 108 low-redshift (z < 0.1) Type Ia supernovae (SNe Ia) with optical spectra within 5 d of maximum brightness. We find the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Jeffrey M. Silverman , Mohan Ganeshalingam , Weidong Li , Alexei V. Filippenko