Related papers: Type Ia Supernova Carbon Footprints

'Super-Chandrasekhar' Type Ia Supernovae at nebular epochs

We present a first systematic comparison of superluminous Type Ia supernovae (SNe Ia) at late epochs, including previously unpublished photometric and spectroscopic observations of SN 2007if, SN 2009dc and SNF20080723-012. Photometrically,…

Solar and Stellar Astrophysics · Physics 2015-06-15 Stefan Taubenberger , Markus Kromer , Stephan Hachinger , Paolo A. Mazzali , Stefano Benetti , Peter E. Nugent , Richard A. Scalzo , Rüdiger Pakmor , Vallery Stanishev , Jason Spyromilio , Filomena Bufano , Stuart A. Sim , Bruno Leibundgut , Wolfgang Hillebrandt

Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac

We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several respects. Prior to B-band maximum, the spectra…

Astrophysics · Physics 2012-08-27 The Supernova Cosmology Project , : , G. Garavini , G. Aldering , A. Amadon , R. Amanullah , P. Astier , C. Balland , G. Blanc , A. Conley , T. Dahlen , S. E. Deustua , R. Ellis S. Fabbro , V. Fadeyev , X. Fan , G. Folatelli , B. Frye , E. L. Gates , R. Gibbons , G. Goldhaber , B. Goldman , A. Goobar , D. E. Groom , J. Haissinski , D. Hardin , I. Hook , D. A. Howell , S. Kent , A. G. Kim , R. A. Knop , M. Kowalski , N. Kuznetsova , B. C. Lee C. Lidman , J. Mendez , G. J. Miller , M. Moniez , M. Mouchet , A. Mourao , H. Newberg , S. Nobili , P. E. Nugent , R. Pain , O. Perdereau , S. Perlmutter , R. Quimby , N. Regnault , J. Rich , G. T. Richards , P. Ruiz-Lapuente , B. E. Schaefer , K. Schahmaneche , E. Smith , A. L. Spadafora , V. Stanishev , R. C. Thomas , N. A. Walton , L. Wang , W. M. Wood-Vasey

Spectral sequences of Type Ia supernovae. II. Carbon as a diagnostic tool for explosion mechanisms

How an otherwise inert carbon-oxygen white dwarf can be made to explode as a Type Ia supernova remains unknown. A promising test of theoretical models is to constrain the distribution of material that is left unburned, in particular of…

High Energy Astrophysical Phenomena · Physics 2019-02-13 E. Heringer , M. H. van Kerkwijk , S. A. Sim , W. E. Kerzendorf , Melissa L. Graham

Comparative Direct Analysis of Type Ia Supernova Spectra. IV. Postmaximum

A comparative study of optical spectra of Type Ia supernovae (SNe Ia) obtained near 1 week, 3 weeks, and 3 months after maximum light is presented. Most members of the four groups that were defined on the basis of maximum light spectra in…

Astrophysics · Physics 2009-11-13 David Branch , David J. Jeffery , Jerod Parrent , E. Baron , M. A. Troxel , V. Stanishev , Melissa Keithley , Joshua Harrison , Christopher Bruner

SN~2012cg: Evidence for Interaction Between a Normal Type Ia Supernova and a Non-Degenerate Binary Companion

We report evidence for excess blue light from the Type Ia supernova SN 2012cg at fifteen and sixteen days before maximum B-band brightness. The emission is consistent with predictions for the impact of the supernova on a non-degenerate…

Solar and Stellar Astrophysics · Physics 2016-04-06 G. H. Marion , Peter J. Brown , Jozsef Vinkó , Jeffrey M. Silverman , David J. Sand , Peter Challis , Robert P. Kirshner , J. Craig Wheeler , Perry Berlind , Warren R. Brown , Michael L. Calkins , Yssavo Camacho , Govinda Dhungana , Ryan J. Foley , Andrew S. Friedman , Melissa L. Graham , D. Andrew Howell , Eric Y. Hsiao , Jonathan M. Irwin , Saurabh W. Jha , Robert Kehoe , Lucas M. Macri , Keiichi Maeda , Kaisey Mandel , Curtis McCully , Viraj Pandya , Kenneth J. Rines , Steven Wilhelmy , Weikang Zheng

SN 2022vqz: A Peculiar Subluminous Type Ia Supernova with Prominent Early Excess Emission

We present extensive photometric and spectroscopic observations of the peculiar Type Ia supernova (SN Ia) 2022vqz. It shares many similarities with the SN 2002es-like SNe Ia, such as low luminosity ($M_{B,\rm max}=-18.11\pm0.16$ mag) and…

High Energy Astrophysical Phenomena · Physics 2023-12-01 Gaobo Xi , Xiaofeng Wang , Gaici Li , Jialian Liu , Shengyu Yan , Weili Lin , Jieming Zhao , Alexei V. Filippenko , Weikang Zheng , Thomas G. Brink , Y. Yang , Shuhrat A. Ehgamberdiev , Davron Mirzaqulov , Andrea Reguitti , Andrea Pastorello , Lina Tomasella , Yongzhi Cai , Jujia Zhang , Zhitong Li , Tianmeng Zhang , Hanna Sai , Zhihao Chen , Qichun Liu , Xiaoran Ma , Danfeng Xiang

Analysis of the Early-Time Optical Spectra of SN 2011fe in M101

The nearby Type Ia supernova SN 2011fe in M101 (cz=241 km s^-1) provides a unique opportunity to study the early evolution of a "normal" Type Ia supernova, its compositional structure, and its elusive progenitor system. We present 18 high…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 J. T. Parrent , D. A. Howell , B. Friesen , R. C. Thomas , R. A. Fesen , D. Milisavljevic , F. B. Bianco , B. Dilday , P. Nugent , E. Baron , I. Arcavi , S. Ben-Ami , D. Bersier , L. Bildsten , J. Bloom , Y. Cao , S. B. Cenko , A. V. Filippenko , A. Gal-Yam , M. M. Kasliwal , N. Konidaris , S. R. Kulkarni , N. M. Law , D. Levitan , K. Maguire , P. A. Mazzali , E. O. Ofek , Y. Pan , D. Polishook , D. Poznanski , R. M. Quimby , J. M. Silverman , A. Sternberg , M. Sullivan , E. S. Walker , D. Xu , C. Buton , R. Pereira

Spectral properties of Type Ia supernovae up to z~0.3

Aims: Spectroscopic observations of Type Ia supernovae obtained at the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT), in conjunction with the SDSS-II Supernova Survey, are analysed. We use spectral indicators…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 J. Nordin , L. Ostman , A. Goobar , R. Amanullah , R. C. Nichol , M. Smith , J. Sollerman , B. A. Bassett , J. Frieman , P. M. Garnavich , G. Leloudas , M. Sako , D. P. Schneider

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

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

Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the $Kepler$ 2 Observations

Supernova (SN) 2018oh (ASASSN-18bt) is the first spectroscopically-confirmed type Ia supernova (SN Ia) observed in the $Kepler$ field. The $Kepler$ data revealed an excess emission in its early light curve, allowing to place interesting…

Solar and Stellar Astrophysics · Physics 2019-01-09 W. Li , X. Wang , J. Vinkó , J. Mo , G. Hosseinzadeh , D. J. Sand , J. Zhang , H. Lin , T. Zhang , L. Wang , J. Zhang , Z. Chen , D. Xiang , L. Rui , F. Huang , X. Li , X. Zhang , L. Li , E. Baron , J. M. Derkacy , X. Zhao , H. Sai , K. Zhang , L. Wang , D. A. Howell , C. McCully , I. Arcavi , S. Valenti , D. Hiramatsu , J. Burke , A. Rest , P. Garnavich , B. E. Tucker , G. Narayan , E. Shaya , S. Margheim , A. Zenteno , A. Villar , G. Dimitriadis , R. J. Foley , Y. -C. Pan , D. A. Coulter , O. D. Fox , S. W. Jha , D. O. Jones , D. N. Kasen , C. D. Kilpatrick , A. L. Piro , A. G. Riess , C. Rojas-Bravo , B. J. Shappee , T. W. -S. Holoien , K. Z. Stanek , M. R. Drout , K. Auchettl , C. S. Kochanek , J. S. Brown , S. Bose , D. Bersier , J. Brimacombe , P. Chen , S. Dong , S. Holmbo , J. A. Muñoz , R. L. Mutel , R. S. Post , J. L. Prieto , J. Shields , D. Tallon , T. A. Thompson , P. J. Vallely , S. Villanueva , S. J. Smartt , K. W. Smith , K. C. Chambers , H. A. Flewelling , M. E. Huber , E. A. Magnier , C. Z. Waters , A. S. B. Schultz , J. Bulger , T. B. Lowe , M. Willman , K. Sárneczky , A. Pál , J. C. Wheeler , A. Bódi , Zs. Bognár , B. Csák , B. Cseh , G. Csörnyei , O. Hanyecz , B. Ignácz , Cs. Kalup , R. Könyves-Tóth , L. Kriskovics , A. Ordasi , I. Rajmon , A. Sódor , R. Szabó , R. Szakáts , G. Zsidi , P. Milne , J. E. Andrews , N. Smith , C. Bilinski , P. J. Brown , J. Nordin , S. C. Williams , L. Galbany , J. Palmerio , I. M. Hook , C. Inserra , K. Maguire , Régis Cartier , A. Razza , C. P. Gutiérrez , J. J. Hermes , J. S. Reding , B. C. Kaiser , J. L. Tonry , A. N. Heinze , L. Denneau , H. Weiland , B. Stalder , G. Barentsen , J. Dotson , T. Barclay , M. Gully-Santiago , C. Hedges , A. M. Cody , S. Howell , J. Coughlin , J. E. Van Cleve , J. Vinícius de Miranda Cardoso , K. A. Larson , K. M. McCalmont-Everton , C. A. Peterson , S. E. Ross , L. H. Reedy , D. Osborne , C. McGinn , L. Kohnert , L. Migliorini , A. Wheaton , B. Spencer , C. Labonde , G. Castillo , G. Beerman , K. Steward , M. Hanley , R. Larsen , R. Gangopadhyay , R. Kloetzel , T. Weschler , V. Nystrom , J. Moffatt , M. Redick , K. Griest , M. Packard , M. Muszynski , J. Kampmeier , R. Bjella , S. Flynn , B. Elsaesser

ZTF SN Ia DR2: Overview

We present the first homogeneous release of several thousand Type Ia supernovae (SNe Ia), all having spectroscopic classification, and spectroscopic redshifts for half the sample. This release, named the "DR2", contains 3628 nearby (z <…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-04 Mickael Rigault , Mathew Smith , Ariel Goobar , Kate Maguire , Georgios Dimitriadis , Umut Burgaz , Suhail Dhawan , Jesper Sollerman , Nicolas Regnault , Marek Kowalski , Melissa Amenouche , Marie Aubert , Chloé Barjou-Delayre , Julian Bautista , Josh S. Bloom , Bastien Carreres , Tracy X. Chen , Yannick Copin , Maxime Deckers , Dominique Fouchez , Christoffer Fremling , Lluis Galbany , Madeleine Ginolin , Matthew Graham , Mancy M. Kasliwal , W. D'Arcy Kenworthy , Young-Lo Kim , Dylan Kuhn , Frank F. Masci , Tomas Müller-Bravo , Adam Miller , Joel Johansson , Jakob Nordin , Peter Nugent , Igor Andreoni , Eric Bellm , Marc Betoule , Mahmoud Osman , Dan Perley , Brodie Popovic , Philippe Rosnet , Damiano Rosselli , Florian Ruppin , Robert Senzel , Ben Rusholme , Tassilo Schweyer , Jacco H. Terwel , Alice Townsend , Andy Tzanidakis , Avery Wold , Josiah Purdum , Yu-Jing Qin , Benjamin Racine , Simeon Reusch , Reed Riddle , Lin Yan

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

Type Ia supernovae from non-accreting progenitors

Type Ia supernovae (SNe Ia) are manifestations of stars deficient of hydrogen and helium disrupting in a thermonuclear runaway. While explosions of carbon-oxygen white dwarfs are thought to account for the majority of events, part of the…

Solar and Stellar Astrophysics · Physics 2020-03-11 John Antoniadis , Savvas Chanlaridis , Götz Gräfener , Norbert Langer

Diversity of supernovae Ia determined using equivalent widths of Si II 4000

Spectroscopic and photometric properties of low and high-z supernovae Ia (SNe Ia) have been analyzed in order to achieve a better understanding of their diversity and to identify possible SN Ia sub-types. We use wavelet transformed spectra…

Astrophysics · Physics 2009-01-05 V. Arsenijevic , S. Fabbro , A. M. Mourao , A. J. Rica da Silva

A study of Si II and S II features in spectra of Type Ia supernova

We studied the spectral features of Si II $\lambda\lambda$4130, 5972, 6355 and S II W-trough for a large sample of Type Ia supernovae (SNe Ia). We find that in NV (Normal-Velocity) subclass of SNe Ia, these features tend to reach a maximum…

High Energy Astrophysical Phenomena · Physics 2021-04-08 Xulin Zhao , Keiichi Maeda , Xiaofeng Wang , Hanna Sai

Expanding the parameter space of 2002es-like type Ia supernovae: on the underluminous ASASSN-20jq / SN 2020qxp

We present optical photometric and spectroscopic observations of the peculiar Type Ia supernova ASASSN-20jq/SN 2020qxp. It is a low-luminosity object with a peak absolute magnitude of $M_B=-17.1\pm0.5$ mag. Despite its low luminosity, its…

High Energy Astrophysical Phenomena · Physics 2025-07-09 Subhash Bose , Maximilian D. Stritzinger , Chris Ashall , Eddie Baron , Peter Hoeflich , L. Galbany , W. B. Hoogendam , E. A. M. Jensen , C. S. Kochanek , R. S. Post , A. Reguitti , N. Elias-Rosa , K. Z. Stanek , Peter Lundqvist , Katie Auchettl , Alejandro Clocchiatti , A. Fiore , Claudia P. Gutiérrez , Jason T. Hinkle , Mark E. Huber , T. de Jaeger , Andrea Pastorello , Anna V. Payne , Mark Phillips , Benjamin J. Shappee , Michael A. Tucker

Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation

We report on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts. Light curves, including high signal-to-noise HST data, and spectra of six SNe Ia that were discovered during 2001 are presented.…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-15 R. Amanullah , C. Lidman , D. Rubin , G. Aldering , P. Astier , K. Barbary , M. S. Burns , A. Conley , K. S. Dawson , S. E. Deustua , M. Doi , S. Fabbro , L. Faccioli , H. K. Fakhouri , G. Folatelli , A. S. Fruchter , H. Furusawa , G. Garavini , G. Goldhaber , A. Goobar , D. E. Groom , I. Hook , D. A. Howell , N. Kashikawa , A. G. Kim , R. A. Knop , M. Kowalski , E. Linder , J. Meyers , T. Morokuma , S. Nobili , J. Nordin , P. E. Nugent , L. Ostman , R. Pain , N. Panagia , S. Perlmutter , J. Raux , P. Ruiz-Lapuente , A. L. Spadafora , M. Strovink , N. Suzuki , L. Wang , W. M. Wood-Vasey , N. Yasuda

Unveiling the Diversity of Type IIn Supernovae via Systematic Light Curve Modeling

Type IIn supernovae (SNeIIn) are a highly heterogeneous subclass of core-collapse supernovae, spectroscopically characterized by signatures of interaction with a dense circumstellar medium (CSM). Here we systematically model the light…

High Energy Astrophysical Phenomena · Physics 2024-09-18 C. L. Ransome , V. A. Villar

The luminosities of supernovae of type Ia derived from Cepheid observations

Available data on the luminosities of supernovae of Type Ia (SNe Ia) that have been calibrated by Cepheids are collected and discussed. The objects in the present sample show a range of ~20 in luminosity. The data strongly confirm the…

Astrophysics · Physics 2007-05-23 Sidney van den Bergh