Related papers: Testing for Intrinsic Type Ia Supernova Luminosity…

Type Ia supernovae SN 2013bz, PSN J0910+5003 and ASASSN-16ex: similar to 09dc-like?

We present optical photometric and spectroscopic studies of three supernovae (SNe) SN 2013bz, PSN J0910+5003 and ASASSN-16ex. UV-optical photometric data of ASASSN-16ex obtained with Swift-UVOT are also analyzed. These objects were…

High Energy Astrophysical Phenomena · Physics 2023-03-29 S. Tiwari , N. K. Chakradhari , D. K. Sahu , G. C. Anupama , B. Kumar , K. R. Sahu

Prospects of Searching for Type Ia Supernovae with 2.5-m Wide Field Survey Telescope

Type Ia Supernovae (SNe Ia) are the thermonuclear explosion of a carbon-oxygen white dwarf (WD) and are well-known as a distance indicator. However, it is still unclear how WDs increase their mass near the Chandrasekhar limit and how the…

Solar and Stellar Astrophysics · Physics 2022-12-27 Maokai Hu , Lei Hu , Ji-an Jiang , Lin Xiao , Lulu Fan , Junjie Wei , Xuefeng Wu

Discovery of a likely Type II SN at $z$=3.6 with JWST

Transient astronomy in the early, high-redshift (z > 3) Universe is an unexplored regime that offers the possibility of probing the first stars and the Epoch of Reionization. During Cycles 1 and 2 of the James Webb Space Telescope (JWST),…

High Energy Astrophysical Phenomena · Physics 2025-01-24 D. A. Coulter , J. D. R. Pierel , C. DeCoursey , T. J. Moriya , M. R. Siebert , B. A. Joshi , M. Engesser , A. Rest , E. Egami , M. Shahbandeh , W. Chen , O. D. Fox , L. G. Strolger , Y. Zenati , A. J. Bunker , P. A. Cargile , M. Curti , D. J. Eisenstein , S. Gezari , S. Gomez , M. Guolo , K. Hainline , J. Jencson , B. D. Johnson , M. Karmen , R. Maiolino , R. M. Quimby , P. Rinaldi , B. Robertson , S. Tacchella , F. Sun , Q. Wang , T. Wevers

JWST MIRI/MRS Observations and Spectral Models of the Under-luminous Type Ia Supernova 2022xkq

We present a JWST mid-infrared spectrum of the under-luminous Type Ia Supernova (SN Ia) 2022xkq, obtained with the medium-resolution spectrometer on the Mid-Infrared Instrument (MIRI) $\sim130$ days post-explosion. We identify the first MIR…

High Energy Astrophysical Phenomena · Physics 2023-11-08 J. M. DerKacy , C. Ashall , P. Hoeflich , E. Baron , M. Shahbandeh , B. J. Shappee , J. Andrews , D. Baade , E. F Balangan , K. A. Bostroem , P. J. Brown , C. R. Burns , A. Burrow , A. Cikota , T. de Jaeger , A. Do , Y. Dong , I. Dominguez , O. Fox , L. Galbany , E. T. Hoang , E. Y. Hsiao , D. Janzen , J. E. Jencson , K. Krisciunas , S. Kumar , J. Lu , M. Lundquist , T. B. Mera Evans , J. R. Maund , P. Mazzali , K. Medler , N. E. Meza Retamal , N. Morrell , F. Patat , J. Pearson , M. M. Phillips , M. Shrestha , S. Stangl , C. P. Stevens , M. D. Stritzinger , N. B. Suntzeff , C. M. Telesco , M. A. Tucker , S. Valenti , L. Wang , Y. Yang

New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy

We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over the last 10 billion years. These objects, which include 13 spectroscopically…

Astrophysics · Physics 2008-11-26 Adam G. Riess , Louis-Gregory Strolger , Stefano Casertano , Henry C. Ferguson , Bahram Mobasher , Ben Gold , Peter J. Challis , Alexei V. Filippenko , Saurabh Jha , Weidong Li , John Tonry , Ryan Foley , Robert P. Kirshner , Mark Dickinson , Emily MacDonald , Daniel Eisenstein , Mario Livio , Josh Younger , Chun Xu , Tomas Dahlen , Daniel Stern

SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young

The Type~Ia supernova (SN~Ia) 2017cfd in IC~0511 (redshift z = 0.01209+- 0.00016$) was discovered by the Lick Observatory Supernova Search 1.6+-0.7 d after the fitted first-light time (FFLT; 15.2 d before B-band maximum brightness).…

Solar and Stellar Astrophysics · Physics 2020-04-15 Xuhui Han , WeiKang Zheng , Benjamin E. Stahl , Jamison Burke , Jozsef Vinko , Thomas de Jaeger , Thomas G. Brink , Borbala Cseh , Daichi Hiramatsu , D. Andrew Howell , Bernadett Ignacz , Reka Konyves-Toth , Mate Krezinger , Curtis McCully , Andras Ordasi , Dora Pinter , Krisztian Sarneczky , Robert Szakats , Kevin Tang , Krisztian Vida , Jing Wang , Jianyan Wei , J. Craig Wheeler , Liping Xin , Alexei V. Filippenko

JWST and Ground-based Observations of the Type Iax Supernovae SN 2024pxl and SN 2024vjm: Evidence for Weak Deflagration Explosions

We present panchromatic optical $+$ near-infrared (NIR) $+$ mid-infrared (MIR) observations of the intermediate-luminosity Type Iax supernova (SN Iax) 2024pxl and the extremely low-luminosity SN Iax 2024vjm. JWST observations provide…

High Energy Astrophysical Phenomena · Physics 2025-10-20 Lindsey A. Kwok , Mridweeka Singh , Saurabh W. Jha , Stéphane Blondin , Raya Dastidar , Conor Larison , Adam A. Miller , Jennifer E. Andrews , Moira Andrews , G. C. Anupama , Katie Auchettl , Dominik Bánhidi , Barnabas Barna , K. Azalee Bostroem , Thomas G. Brink , Régis Cartier , Ping Chen , Collin T. Christy , David A. Coulter , Sofia Covarrubias , Kyle W. Davis , Connor B. Dickinson , Yize Dong , Joseph R. Farah , Alexei V. Filippenko , Andreas Flörs , Ryan J. Foley , Noah Franz , Christoffer Fremling , Lluís Galbany , Anjasha Gangopadhyay , Aarna Garg , Peter Garnavich , Elinor L. Gates , Or Graur , Alexa C. Gordon , Daichi Hiramatsu , Emily Hoang , D. Andrew Howell , Brian Hsu , Joel Johansson , Arti Joshi , Lordrick A. Kahinga , Ravjit Kaur , Sahana Kumar , Piramon Kumnurdmanee , Hanindyo Kuncarayakti , Natalie LeBaron , Chang Liu , Keiichi Maeda , Kate Maguire , Curtis McCully , Darshana Mehta , Luca M. Menotti , Anne J. Metevier , Kuntal Misra , C. Tanner Murphey , Megan Newsome , Estefania Padilla Gonzalez , Kishore C. Patra , Jeniveve Pearson , Anthony L. Piro , Abigail Polin , Aravind P. Ravi , Armin Rest , Nabeel Rehemtulla , Nicolas Meza Retamal , Olivia M. Robinson , César Rojas-Bravo , Devendra K. Sahu , David J. Sand , Brian P. Schmidt , Steve Schulze , Michaela Schwab , Manisha Shrestha , Matthew R. Siebert , Sunil Simha , Nathan Smith , Jesper Sollerman , Bhagya M. Subrayan , Tamás Szalai , Kirsty Taggart , Rishabh Singh Teja , Tea Temim , Jacco H. Terwel , Samaporn Tinyanont , Stefano Valenti , Jorge Anais Vilchez , József Vinkó , Aya L. Westerling , Yi Yang , WeiKang Zheng

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

LensWatch. II. Improved Photometry and Time-delay Constraints on the Strongly Lensed Type Ia Supernova 2022qmx ("SN Zwicky") with HST Template Observations

Strongly lensed supernovae (SNe) are a rare class of transient that can offer tight cosmological constraints that are complementary to methods from other astronomical events. We present a follow-up study of one recently-discovered strongly…

High Energy Astrophysical Phenomena · Physics 2025-03-12 Conor Larison , Justin D. R. Pierel , Max J. B. Newman , Saurabh W. Jha , Daniel Gilman , Erin E. Hayes , Aadya Agrawal , Nikki Arendse , Simon Birrer , Mateusz Bronikowski , John M. Della Costa , David A. Coulter , Frédéric Courbin , Sukanya Chakrabarti , Jose M. Diego , Kyle A. Dalrymple , Suhail Dhawan , Ariel Goobar , Christa Gall , Jens Hjorth , Xiaosheng Huang , Shude Mao , Rui Marques-Chaves , Paolo A. Mazzali , Anupreeta More , Leonidas A. Moustakas , Ismael Pérez-Fournon , Tanja Petrushevska , Frédérick Poidevin , Armin Rest , Anowar J. Shajib , Raphael Shirley , William Sheu , Louis-Gregory Strolger , Sherry H. Suyu , Tommaso Treu , Yossef Zenati

Testing for redshift evolution of Type Ia supernovae using the strongly lensed PS1-10afx at $z=1.4$

The light from distant supernovae (SNe) can be magnified through gravitational lensing when a foreground galaxy is located along the line of sight. This line-up allows for detailed studies of SNe at high redshift that otherwise would not be…

High Energy Astrophysical Phenomena · Physics 2017-07-26 T. Petrushevska , R. Amanullah , M. Bulla , M. Kromer , R. Ferretti , A. Goobar , S. Papadogiannakis

Intrinsic color diversity of nearby type Ia supernovae

It has been reported that the extinction law for Type Ia Supernovae (SNe Ia) may be different from the one in the Milky Way, but the intrinsic color of SNe Ia and the dust extinction are observationally mixed. In this study, we examine…

High Energy Astrophysical Phenomena · Physics 2021-02-17 Noriaki Arima , Mamoru Doi , Tomoki Morokuma , Naohiro Takanashi

Hubble Space Telescope studies of low-redshift Type Ia supernovae: Evolution with redshift and ultraviolet spectral trends

We present an analysis of the maximum light, near ultraviolet (NUV; 2900-5500 A) spectra of 32 low redshift (0.001<z<0.08) Type Ia supernovae (SNe Ia), obtained with the Hubble Space Telescope (HST). We combine this spectroscopic sample…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 K. Maguire , M. Sullivan , R. S. Ellis , P. E. Nugent , D. A. Howell , A. Gal-Yam , J. Cooke , P. Mazzali , Y-C. Pan , B. Dilday , R. C. Thomas , I. Arcavi , S. Ben-Ami , D. Bersier , F. B. Bianco , B. J. Fulton , I. Hook , A. Horesh , E. Hsiao , P. A. James , P. Podsiadlowski , E. S. Walker , O. Yaron , M. M. Kasliwal , R. R. Laher , N. M. Law , E. O. Ofek , D. Poznanski , J. Surace

Type Ia Supernova Distances at z > 1.5 from the Hubble Space Telescope Multi-Cycle Treasury Programs: The Early Expansion Rate

We present an analysis of 15 Type Ia supernovae (SNe Ia) at redshift z > 1 (9 at 1.5 < z < 2.3) recently discovered in the CANDELS and CLASH Multi-Cycle Treasury programs using WFC3 on the Hubble Space Telescope. We combine these SNe Ia…

Cosmology and Nongalactic Astrophysics · Physics 2018-02-14 Adam G. Riess , Steven A. Rodney , Daniel M. Scolnic , Daniel L. Shafer , Louis-Gregory Strolger , Henry C. Ferguson , Marc Postman , Or Graur , Dan Maoz , Saurabh W. Jha , Bahram Mobasher , Stefano Casertano , Brian Hayden , Alberto Molino , Jens Hjorth , Peter M. Garnavich , David O. Jones , Robert P. Kirshner , Anton M. Koekemoer , Norman A. Grogin , Gabriel Brammer , Shoubaneh Hemmati , Mark Dickinson , Peter M. Challis , Schuyler Wolff , Kelsey I. Clubb , Alexei V. Filippenko , Hooshang Nayyeri , U Vivian , David C. Koo , Sandra M. Faber , Dale Kocevski , Larry Bradley , Dan Coe

Optical and Near-Infrared Observations of the Highly Reddened, Rapidly Expanding Type Ia Supernova 2006X in M100

We present extensive optical (UBVRI), near-infrared (JK) light curves and optical spectroscopy of the Type Ia supernova (SN) 2006X in the nearby galaxy NGC 4321 (M100). Our observations suggest that either SN 2006X has an intrinsically…

Astrophysics · Physics 2009-11-13 Xiaofeng Wang , Weidong Li , Alexei V. Filippenko , Kevin Krisciunas , Nicholas B. Suntzeff , Junzheng Li , Tianmeng Zhang , Jingsong Deng , Ryan J. Foley , Mohan Ganeshalingam , Tipei Li , YuQing Lou , Yulei Qiu , Rencheng Shang , Jeffrey M. Silverman , Shuangnan Zhang , Youhong Zhang

Type Ia Supernova Light Curve Inference: Hierarchical Bayesian Analysis in the Near Infrared

We present a comprehensive statistical analysis of the properties of Type Ia SN light curves in the near infrared using recent data from PAIRITEL and the literature. We construct a hierarchical Bayesian framework, incorporating several…

Cosmology and Nongalactic Astrophysics · Physics 2009-10-21 Kaisey S. Mandel , W. Michael Wood-Vasey , Andrew S. Friedman , Robert P. Kirshner

Measurements of the Rate of Type Ia Supernovae at Redshift z < ~0.3 from the SDSS-II Supernova Survey

We present a measurement of the volumetric Type Ia supernova (SN Ia) rate based on data from the Sloan Digital Sky Survey II (SDSS-II) Supernova Survey. The adopted sample of supernovae (SNe) includes 516 SNe Ia at redshift z \lesssim 0.3,…

Cosmology and Nongalactic Astrophysics · Physics 2010-05-07 Benjamin Dilday , Mathew Smith , Bruce Bassett , Andrew Becker , Ralf Bender , Francisco Castander , David Cinabro , Alexei V. Filippenko , Joshua A. Frieman , Lluis Galbany , Peter M. Garnavich , Ariel Goobar , Ulrich Hopp , Yutaka Ihara , Saurabh W. Jha , Richard Kessler , Hubert Lampeitl , John Marriner , Ramon Miquel , Mercedes Molla , Robert C. Nichol , Jakob Nordin , Adam G. Riess , Masao Sako , Donald P. Schneider , Jesper Sollerman , J. Craig Wheeler , Linda Ostman , Dmitry Bizyaev , Howard Brewington , Elena Malanushenko , Viktor Malanushenko , Dan Oravetz , Kaike Pan , Audrey Simmons , Stephanie Snedden

JWST Spectroscopy of SN Ia 2022aaiq and 2024gy: Evidence for Enhanced Central Stable Ni Abundance and a Deflagration-to-Detonation Transition

We present optical + near-infrared (NIR) + mid-infrared (MIR) observations of the normal Type Ia supernovae (SN Ia) 2022aaiq and 2024gy in the nebular phase, continuously spanning 0.35-28 microns. Medium-resolution JWST spectroscopy reveals…

High Energy Astrophysical Phenomena · Physics 2025-10-15 Lindsey A. Kwok , Chang Liu , Saurabh W. Jha , Stéphane Blondin , Conor Larison , Adam A. Miller , Mi Dai , Ryan J. Foley , Alexei V. Filippenko , Jennifer E. Andrews , Moira Andrews , Katie Auchettl , Carles Badenes , Thomas G. Brink , Kyle W. Davis , Andreas Flörs , Lluís Galbany , Or Graur , D. Andrew Howell , Sahana Kumar , Réka Könyves-Tóth , Natalie LeBaron , Colin W. Macrie , Keiichi Maeda , Kate Maguire , Curtis McCully , Nicolas E. Meza-Retamal , Estefania Padilla Gonzalez , Rüdiger Pakmor , Jeniveve Pearson , Anthony L. Piro , Abigail Polin , Nabeel Rehemtulla , César Rojas-Bravo , David J. Sand , Chita Sangkachan , Michaela Schwab , Huei Sears , Mridweeka Singh , Bhagya M. Subrayan , Kirsty Taggart , Tea Temim , Jacco H. Terwel , Samaporn Tinyanont , József Vinkó , Xiaofeng Wang , J. Craig Wheeler , Yi Yang , WeiKang Zheng

Characterising the Standardisation Properties of Type Ia Supernovae in the z band with Hierarchical Bayesian Modelling

Type Ia supernovae (SNe Ia) are standardisable candles: their peak magnitudes can be corrected for correlations between light curve properties and their luminosities to precisely estimate distances. Understanding SN Ia standardisation…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-19 Erin E. Hayes , Suhail Dhawan , Kaisey S. Mandel , David O. Jones , Ryan J. Foley , Stephen Thorp , Matthew Grayling , Sam M. Ward , Aaron Do , Danial Langeroodi , Nicholas Earl , Kaylee M. de Soto , Gautham Narayan , Katie Auchettl , Thomas de Boer , Kenneth C. Chambers , David A. Coulter , Christa Gall , Hua Gao , Luca Izzo , Chien-Cheng Lin , Eugene A. Magnier , Armin Rest , Qinan Wang

A JWST Near- and Mid-Infrared Nebular Spectrum of the Type Ia Supernova 2021aefx

We present JWST near- and mid-infrared spectroscopic observations of the nearby normal Type Ia supernova SN 2021aefx in the nebular phase at $+255$ days past maximum light. Our Near Infrared Spectrograph (NIRSpec) and Mid Infrared…

High Energy Astrophysical Phenomena · Physics 2023-02-13 Lindsey A. Kwok , Saurabh W. Jha , Tea Temim , Ori D. Fox , Conor Larison , Yssavo Camacho-Neves , Max J. Brenner Newman , Justin D. R. Pierel , Ryan J. Foley , Jennifer E. Andrews , Carles Badenes , Barnabas Barna , K. Azalee Bostroem , Maxime Deckers , Andreas Flors , Peter Garnavich , Melissa L. Graham , Or Graur , Griffin Hosseinzadeh , D. Andrew Howell , John P. Hughes , Joel Johansson , Sarah Kendrew , Wolfgang E. Kerzendorf , Keiichi Maeda , Kate Maguire , Curtis McCully , John T. O'Brien , Armin Rest , David J. Sand , Melissa Shahbandeh , Louis-Gregory Strolger , Tamas Szalai , Chris Ashall , E. Baron , Chris R. Burns , James M. DerKacy , Tyco Mera Evans , Alec Fisher , Lluis Galbany , Peter Hoeflich , Eric Hsiao , Thomas de Jaeger , Emir Karamehmetoglu , Kevin Krisciunas , Sahana Kumar , Jing Lu , Justyn Maund , Paolo A. Mazzali , Kyle Medler , Nidia Morrell , Mark. M. Phillips , Benjamin J. Shappee , Maximilian Stritzinger , Nicholas Suntzeff , Charles Telesco , Michael Tucker , Lifan Wang

SNLS Spectroscopy: Testing for Evolution in Type Ia Supernovae

Aims: We present a quantitative study of a new data set of high redshift Type Ia supernovae spectra, observed at the Gemini telescopes during the first 34 months of the Supernova Legacy Survey. During this time 123 supernovae candidates…

Astrophysics · Physics 2009-11-13 T. J. Bronder , I. M. Hook , P. Astier , D. Balam , C. Balland , S. Basa , R. G. Carlberg , A. Conley , D. Fouchez , J. Guy , D. A. Howell , J. D. Neill , R. Pain , K. Perrett , C. J. Pritchet , N. Regnault , M. Sullivan , S. Baumont , S. Fabbro , M. Filliol , S. Perlmutter , P. Ripoche