Related papers: Cosmological Parameter Uncertainties from SALT-II …

The Dark Energy Survey 5-year photometrically identified Type Ia Supernovae

As part of the cosmology analysis using Type Ia Supernovae (SN Ia) in the Dark Energy Survey (DES), we present photometrically identified SN Ia samples using multi-band light-curves and host galaxy redshifts. For this analysis, we use the…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-21 A. Möller , M. Smith , M. Sako , M. Sullivan , M. Vincenzi , P. Wiseman , P. Armstrong , J. Asorey , D. Brout , D. Carollo , T. M. Davis , C. Frohmaier , L. Galbany , K. Glazebrook , L. Kelsey , R. Kessler , G. F. Lewis , C. Lidman , U. Malik , R. C. Nichol , D. Scolnic , B. E. Tucker , T. M. C. Abbott , M. Aguena , S. Allam , J. Annis , E. Bertin , S. Bocquet , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , C. Conselice , M. Costanzi , M. Crocce , L. N. da Costa , J. De Vicente , S. Desai , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , D. A. Finley , B. Flaugher , D. Friedel , J. Frieman , J. García-Bellido , D. W. Gerdes , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , O. Lahav , M. March , J. L. Marshall , F. Menanteau , R. Miquel , R. Morgan , A. Palmese , F. Paz-Chinchón , A. Pieres , A. A. Plazas Malagón , A. K. Romer , A. Roodman , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , E. Suchyta , G. Tarle , D. Thomas , C. To , T. N. Varga

Measuring the Properties of Dark Energy with Photometrically Classified Pan-STARRS Supernovae. I. Systematic Uncertainty from Core-Collapse Supernova Contamination

The Pan-STARRS (PS1) Medium Deep Survey discovered over 5,000 likely supernovae (SNe) but obtained spectral classifications for just 10% of its SN candidates. We measured spectroscopic host galaxy redshifts for 3,147 of these likely SNe and…

Cosmology and Nongalactic Astrophysics · Physics 2017-07-05 D. O. Jones , D. M. Scolnic , A. G. Riess , R. Kessler , A. Rest , R. P. Kirshner , E. Berger , C. A. Ortega , R. J. Foley , R. Chornock , P. J. Challis , W. S. Burgett , K. C. Chambers , P. W. Draper , H. Flewelling , M. E. Huber , N. Kaiser , R. -P. Kudritzki , N. Metcalfe , R. J. Wainscoat , C. Waters

The Self-Calibrating Hubble Diagram

As an increasing number of well measured type Ia supernovae (SNe Ia) become available, the statistical uncertainty on w has been reduced to the same size as the systematic uncertainty. The statistical error will decrease further in the near…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Ulrich Feindt , Marek Kowalski , Kerstin Paech

Supercal: Cross-Calibration of Multiple Photometric Systems to Improve Cosmological Measurements with Type Ia Supernovae

Current cosmological analyses which use Type Ia supernova (SN Ia) observations combine SN samples to expand the redshift range beyond that of a single sample and increase the overall sample size. The inhomogeneous photometric calibration…

Instrumentation and Methods for Astrophysics · Physics 2015-12-23 D. Scolnic , S. Casertano , A. G. Riess , A. Rest , E. Schlafly , R. J. Foley , D. Finkbeiner , C. Tang , W. S. Burgett , K. C. Chambers , P. W. Draper , H. Flewelling , K. W. Hodapp , M. E. Huber , N. Kaiser , R. P. Kudritzki , E. A. Magnier , N. Metcalfe , C. W. Stubbs

The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope

Measurements of the dark energy equation-of-state parameter, $w$, have been limited by uncertainty in the selection effects and photometric calibration of $z<0.1$ Type Ia supernovae (SNe Ia). The Foundation Supernova Survey is designed to…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 D. O. Jones , D. M. Scolnic , R. J. Foley , A. Rest , R. Kessler , P. M. Challis , K. C. Chambers , D. A. Coulter , K. G. Dettman , M. M. Foley , M. E. Huber , S. W. Jha , E. Johnson , C. D. Kilpatrick , R. P. Kirshner , J. Manuel , G. Narayan , Y. -C. Pan , A. G. Riess , A. S. B. Schultz , M. R. Siebert , E. Berger , R. Chornock , H. Flewelling , E. A. Magnier , S. J. Smartt , K. W. Smith , R. J. Wainscoat , C. Waters , M. Willman

Two c's in a pod: Cosmology independent measurement of the Type Ia supernova colour-luminosity relation with a sibling pair

Using Zwicky Transient Facility (ZTF) observations, we identify a pair of "sibling" Type Ia supernovae (SNe Ia), i.e., hosted by the same galaxy at z = 0.0541. They exploded within 200 days from each other at a separation of $0.6^{"} $…

Astrophysics of Galaxies · Physics 2021-12-22 Rahul Biswas , Ariel Goobar , Suhail Dhawan , Steve Schulze , Joel Johansson , Eric C. Bellm , Richard Dekany , Andrew J. Drake , Dmitry A. Duev , Christoffer Fremling , Matthew Graham , Young-Lo Kim , Erik C. Kool , Shrinivas R. Kulkarni , Ashish A. Mahabal , Daniel Perley , Mickael Rigault , Ben Rusholme , Jesper Sollerman , David L. Shupe , Matthew Smith , Richard S. Walters

Cosmological Tests with the Joint Lightcurve Analysis

We examine whether a comparison between wCDM and R_h=ct using merged Type Ia SN catalogs produces results consistent with those based on a single homogeneous sample. Using the Betoule et al. (2014) joint lightcurve analysis (JLA) of a…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-19 Fulvio Melia , Jun-Jie Wei , Robert Maier , Xuefeng Wu

A More General Model for the Intrinsic Scatter in Type Ia Supernova Distance Moduli

We describe a new formalism to fit the parameters $\alpha$ and $\beta$ that are used in the SALT2 model to determine the standard magnitudes of Type Ia supernovae. The new formalism describes the intrinsic scatter in Type Ia supernovae by a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 John Marriner , J. P. Bernstein , Richard Kessler , Hubert Lampeitl , Ramon Miquel , Jennifer Mosher , Robert C. Nichol , Masao Sako , Donald P. Schneider , Mathew Smith

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 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

Using Host Galaxy Photometric Redshifts to Improve Cosmological Constraints with Type Ia Supernova in the LSST Era

We perform a rigorous cosmology analysis on simulated type Ia supernovae (SN~Ia) and evaluate the improvement from including photometric host-galaxy redshifts compared to using only the "zspec" subset with spectroscopic redshifts from the…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-08 Ayan Mitra , Richard Kessler , Surhud More , Renee Hlozek , The LSST Dark Energy Science Collaboration

Confirmation of a Star Formation Bias in Type Ia Supernova Distances and its Effect on Measurement of the Hubble Constant

Previously we used the Nearby Supernova Factory sample to show that SNe~Ia having locally star-forming environments are dimmer than SNe~Ia having locally passive environments.Here we use the \constitution\ sample together with host galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-15 M. Rigault , G. Aldering , M. Kowalski , Y. Copin , P. Antilogus , C. Aragon , S. Bailey , C. Baltay , D. Baugh , S. Bongard , K. Boone , C. Buton , J. Chen , N. Chotard , H. K. Fakhouri , U. Feindt , P. Fagrelius , M. Fleury , D. Fouchez , E. Gangler , B. Hayden , A. G. Kim , P. -F. Leget , S. Lombardo , J. Nordin , R. Pain , E. Pecontal , R. Pereira , S. Perlmutter , D. Rabinowitz , K. Runge , D. Rubin , C. Saunders , G. Smadja , C. Sofiatti , N. Suzuki , C. Tao , B. A. Weaver

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

SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators

We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by…

Astrophysics · Physics 2011-07-18 J. Guy , P. Astier , S. Baumont , D. Hardin , R. Pain , N. Regnault , S. Basa , R. G. Carlberg , A. Conley , S. Fabbro , D. Fouchez , I. M. Hook , D. A. Howell , K. Perrett , C. J. Pritchet , J. Rich , M. Sullivan , P. Antilogus , E. Aubourg , G. Bazin , J. Bronder , M. Filiol , N. Palanque-Delabrouille , P. Ripoche , V. Ruhlmann-Kleider

The Dark Energy Survey Supernova Program: Investigating Beyond-$\Lambda$CDM

We report constraints on a variety of non-standard cosmological models using the full 5-year photometrically-classified type Ia supernova sample from the Dark Energy Survey (DES-SN5YR). Both Akaike Information Criterion (AIC) and…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-16 R. Camilleri , T. M. Davis , M. Vincenzi , P. Shah , J. Frieman , R. Kessler , P. Armstrong , D. Brout , A. Carr , R. Chen , L. Galbany , K. Glazebrook , S. R. Hinton , J. Lee , C. Lidman , A. Möller , B. Popovic , H. Qu , M. Sako , D. Scolnic , M. Smith , M. Sullivan , B. O. Sánchez , G. Taylor , M. Toy , P. Wiseman , T. M. C. Abbott , M. Aguena , S. Allam , O. Alves , J. Annis , S. Avila , D. Bacon , E. Bertin , S. Bocquet , D. Brooks , D. L. Burke , A. Carnero Rosell , J. Carretero , F. J. Castander , L. N. da Costa , M. E. S. Pereira , S. Desai , H. T. Diehl , P. Doel , C. Doux , S. Everett , I. Ferrero , B. Flaugher , P. Fosalba , J. García-Bellido , M. Gatti , E. Gaztanaga , G. Giannini , D. Gruen , D. L. Hollowood , K. Honscheid , D. J. James , K. Kuehn , O. Lahav , S. Lee , J. L. Marshall , J. Mena-Fernández , R. Miquel , J. Muir , J. Myles , R. L. C. Ogando , A. Pieres , A. A. Plazas Malagón , A. Porredon , M. Rodriguez-Monroy , E. Sanchez , D. Sanchez Cid , M. Schubnell , I. Sevilla-Noarbe , E. Suchyta , M. E. C. Swanson , G. Tarle , A. R. Walker , N. Weaverdyck

Using SN Ia Light Curve Shapes to Measure The Hubble Constant

We present an empirical method which uses visual band light curve shapes (LCS) to estimate the luminosity of type Ia supernovae (SN Ia). This method is first applied to a ``training set'' of 8 SN Ia light curves with independent distance…

Astrophysics · Physics 2009-10-22 Adam G. Riess , William H. Press , Robert P. Kirshner

The DEHVILS Survey Overview and Initial Data Release: High-Quality Near-Infrared Type Ia Supernova Light Curves at Low Redshift

While the sample of optical Type Ia Supernova (SN Ia) light curves (LCs) usable for cosmological parameter measurements surpasses 2000, the sample of published, cosmologically viable near-infrared (NIR) SN Ia LCs, which have been shown to…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-19 Erik R. Peterson , David O. Jones , Daniel Scolnic , Bruno O. Sánchez , Aaron Do , Adam G. Riess , Sam M. Ward , Arianna Dwomoh , Thomas de Jaeger , Saurabh W. Jha , Kaisey S. Mandel , Justin D. R. Pierel , Brodie Popovic , Benjamin M. Rose , David Rubin , Benjamin J. Shappee , Stephen Thorp , John L. Tonry , R. Brent Tully , Maria Vincenzi

ZTF SN Ia DR2: Simulations and volume limited sample

Type Ia supernovae (SNe Ia) constitute an historical probe to derive cosmological parameters through the fit of the Hubble-Lema\^itre diagram, i.e. SN Ia distance modulus versus their redshift. In the era of precision cosmology, realistic…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-10 M. Amenouche , M. Smith , P. Rosnet , M. Rigault , M. Aubert , C. Barjou-Delayre , U. Burgaz , B. Carreres , G. Dimitriadis , F. Feinstein , L. Galbany , M. Ginolin , A. Goobar , L. Harvey , Y. -L. Kim , K. Maguire , T. E. Müller-Bravo , J. Nordin , P. Nugent , B. Racine , D. Rosselli , N. Regnault , J. Sollerman , J. H. Terwel , A. Townsend , S. L. Groom , S. R. Kulkarni , M. Kasliwal , R. R. Laher , J. Purdum

Evaluating Cosmological Biases using Photometric Redshifts for Type Ia Supernova Cosmology with the Dark Energy Survey Supernova Program

Cosmological analyses with Type Ia Supernovae (SNe Ia) have traditionally been reliant on spectroscopy for both classifying the type of supernova and obtaining reliable redshifts to measure the distance-redshift relation. While obtaining a…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-25 R. Chen , D. Scolnic , M. Vincenzi , E. S. Rykoff , J. Myles , R. Kessler , B. Popovic , M. Sako , M. Smith , P. Armstrong , D. Brout , T. M. Davis , L. Galbany , J. Lee , C. Lidman , A. Möller , B. O. Sánchez , M. Sullivan , H. Qu , P. Wiseman , T. M. C. Abbott , M. Aguena , S. Allam , O. Alves , F. Andrade-Oliveira , J. Annis , D. Bacon , D. Brooks , A. Carnero Rosell , J. Carretero , A. Choi , C. Conselice , L. N. da Costa , M. E. S. Pereira , H. T. Diehl , P. Doel , S. Everett , I. Ferrero , B. Flaugher , J. Frieman , J. García-Bellido , M. Gatti , E. Gaztanaga , G. Giannini , D. Gruen , R. A. Gruendl , G. Gutierrez , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , D. J. James , K. Kuehn , M. Lima , J. L. Marshall , J. Mena-Fernández , F. Menanteau , R. Miquel , R. L. C. Ogando , A. Palmese , A. Pieres , A. A. Plazas Malagón , A. Roodman , S. Samuroff , E. Sanchez , D. Sanchez Cid , I. Sevilla-Noarbe , E. Suchyta , M. E. C. Swanson , G. Tarle , C. To , D. L. Tucker , V. Vikram , N. Weaverdyck , J. Weller

Photometric redshifts for supernovae Ia in the Supernova Legacy Survey

We present a method using the SALT2 light curve fitter to determine the redshift of Type Ia supernovae in the Supernova Legacy Survey (SNLS) based on their photometry in g', r', i' and z'. On 289 supernovae of the first three years of SNLS…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 N. Palanque-Delabrouille , V. Ruhlmann-Kleider , S. Pascal , J. Rich , J. Guy , G. Bazin , P. Astier , C. Balland , S. Basa , R. G. Carlberg , A. Conley , D. Fouchez , D. Hardin , I. M. Hook , D. A. Howell , R. Pain , K. Perrett , C. J. Pritchet , N. Regnault , M. Sullivan