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Early-phase photometry and spectroscopy of transitional Type Ia SN 2012ht: Direct constraint on the rise time

We report photometric and spectroscopic observations of the nearby Type Ia Supernova (SN Ia) 2012ht from $-15.8$ days to $+49.1$ days after $B$-band maximum. The decline rate of the light curve is $\Delta m_{15}$($B$)$=1.39~\pm~0.05$ mag,…

太阳与恒星天体物理 · 物理学 2015-06-18 Masayuki Yamanaka , Keiichi Maeda , Miho Kawabata , Masaomi Tanaka , Katsutoshi Takaki , Issei Ueno , Kazunari Masumoto , Koji S. Kawabata , Ryosuke Itoh , Yuki Moritani , Hiroshi Akitaya , Akira Arai , Satoshi Honda , Koichi Nishiyama , Fujio Kabashima , Katsura Matsumoto , Daisaku Nogami , Michitoshi Yoshida

Sub-luminous type Ia supernovae from the mergers of equal-mass white dwarfs with M~0.9 M_sun

Type Ia supernovae (SNe Ia) are thought to result from thermonuclear explosions of carbon-oxygen white dwarf stars. Existing models generally explain the observed properties, with the exception of the sub-luminous 1991-bg-like supernovae.…

高能天体物理现象 · 物理学 2015-05-14 Ruediger Pakmor , Markus Kromer , Friedrich K. Roepke , Stuart A. Sim , Ashley J. Ruiter , Wolfgang Hillebrandt

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…

太阳与恒星天体物理 · 物理学 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 2003du: 480 days in the Life of a Normal Type Ia Supernova

An extensive set of optical and NIR photometry and low-resolution spectra the Type Ia supernova (SN Ia) 2003du was obtained using a number of facilities. The observations started 13 days before B-band maximum light and continued for 480…

天体物理学 · 物理学 2009-11-13 V. Stanishev , A. Goobar , S. Benetti , R. Kotak , G. Pignata , H. Navasardyan , P. Mazzali , R. Amanullah , G. Garavini , S. Nobili , Y. Qiu , N. Elias-Rosa , P. Ruiz-Lapuente , J. Mendez , P. Meikle , F. Patat , A. Pastorello , G. Altavilla , M. Gustafsson , A. Harutyunyan , T. Iijima , P. Jakobsson , M. V. Kichizhieva , P. Lundqvist , S. Mattila , J. Melinder , E. P. Pavlenko , N. N. Pavlyuk , J. Sollerman , D. Yu. Tsvetkov , M. Turatto , W. Hillebrandt

Optical Spectra of the Type Ia Supernova 1998aq

We present 29 optical spectra of the normal Type Ia SN 1998aq, ranging from 9 days before to 241 days after the time of maximum brightness. This spectroscopic data set, together with photometric data presented elsewhere, makes SN 1998aq one…

天体物理学 · 物理学 2009-11-07 D. Branch , P. Garnavich , T. Matheson , E. Baron , R. C. Thomas , K. Hatano , P. Challis , S. Jha , R. P. Kirshner

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…

太阳与恒星天体物理 · 物理学 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

Early Spectral Evolution of the Rapidly Expanding Type Ia SN 2006X

We present optical spectroscopic and photometric observations of Type Ia supernova (SN) 2006X from --10 to +91 days after the $B$-band maximum. This SN exhibits one of the highest expansion velocity ever published for SNe Ia. At premaximum…

高能天体物理现象 · 物理学 2015-05-13 Masayuki Yamanaka , Hiroyuki Naito , Kenzo Kinugasa , Naohiro Takanashi , Masaomi Tanaka , Koji S. Kawabata , Shinobu Ozaki , Shin-ya Narusawa , Kozo Sadakane

Using 1991T/1999aa-like Type Ia Supernovae as Standardizable Candles

We present the photometry of 16 91T/99aa-like Type Ia Supernovae (SNe Ia) observed by the Las Cumbres Observatory. We also use an additional set of 21 91T/99aa-like SNe Ia and 87 normal SNe Ia from the literature for an analysis of the…

高能天体物理现象 · 物理学 2022-10-26 Jiawen Yang , Lifan Wang , Nicholas Suntzeff , Lei Hu , Lauren Aldoroty , Peter J. Brown , Kevin Krisciunas , Iair Arcavi , Jamison Burke , Lluís Galbany , Daichi Hiramatsu , Griffin Hosseinzadeh , D. Andrew Howell , Curtis McCully , Craig Pellegrino , Stefano Valenti

A Template-Based Approach to the Photometric Classification of SN 1991bg-like Supernovae in the SDSS-II Supernova Survey

The use of Type Ia Supernovae (SNe Ia) to measure cosmological parameters has grown significantly over the past two decades. However, there exists a significant diversity in the SN Ia population that is not well understood. Over-luminous SN…

天体物理仪器与方法 · 物理学 2020-12-09 Daniel Perrefort , Yike Zhang , Lluís Galbany , W. M. Wood-Vasey , Santiago González-Gaitán

The Most Slowly Declining Type Ia Supernova 2001ay

We present optical and near-infrared photometry, as well as ground-based optical spectra and Hubble Space Telescope ultraviolet spectra, of the Type Ia supernova (SN) 2001ay. At maximum light the Si II and Mg II lines indicated expansion…

宇宙学与河外天体物理 · 物理学 2015-05-28 Kevin Krisciunas , Weidong Li , Thomas Matheson , D. Andrew Howell , Maximilian Stritzinger , Greg Aldering , Perry L. Berlind , M. Calkins , Peter Challis , Ryan Chornock , Alexander Conley , Alexei V. Filippenko , Mohan Ganeshalingam , Lisa Germany , Sergio Gonzalez , Samuel D. Gooding , Eric Hsiao , Daniel Kasen , Robert P. Kirshner , G. H. "Howie" Marion , Cesar Muena , Peter E. Nugent , M. Phelps , Mark M. Phillips , Yulei Qiu , Robert Quimby , K. Rines , Jeffrey M. Silverman , Nicholas B. Suntzeff , Rollin C. Thomas , Lifan Wang

Peculiar Spectral Evolution of the Type I Supernova 2019eix: A Possible Double Detonation from a Helium Shell on a Sub-Chandrasekhar-mass White Dwarf

We present photometric and spectroscopic data for the nearby Type I supernova (SN Ia) 2019eix (originally classified as a SN Ic), from its discovery day up to 100 days after maximum brightness. Before maximum light SN 2019eix resembles a…

高能天体物理现象 · 物理学 2023-08-09 E. Padilla Gonzalez , D. Andrew Howell , J. Burke , Yize Dong , D. Hiramatsu , C. McCully , C. Pellegrino , W. Kerzendorf , M. Modjaz , G. Terreran , M. Williamson

1991T-like Supernovae

Understanding the nature of the luminous 1991T-like supernovae is of great importance to supernova cosmology as they are likely to have been more common in the early universe. In this paper we explore the observational properties of…

高能天体物理现象 · 物理学 2024-05-27 M. M. Phillips , C. Ashall , Peter J. Brown , L. Galbany , M. A. Tucker , Christopher R. Burns , Carlos Contreras , P. Hoeflich , E. Y. Hsiao , S. Kumar , Nidia Morrell , Syed A. Uddin , E. Baron , Wendy L. Freedman , Kevin Krisciunas , S. E. Persson , Anthony L. Piro , B. J. Shappee , Maximilian Stritzinger , Nicholas B. Suntzeff , Sudeshna Chakraborty , R. P. Kirshner , J. Lu , G. H. Marion , Abigail Polin , M. Shahbandeh

The Properties of Hypernovae: SNe Ic 1998bw, 1997ef, and SN IIn 1997cy

We discuss the properties of the hyper-energetic Type Ic supernovae (SNe Ic) 1998bw and 1997ef and Type IIn supernova (SN IIn) 1997cy. SNe Ic 1998bw and 1997ef are characterized by their large luminosity and the very broad spectral…

天体物理学 · 物理学 2007-05-23 K. Nomoto , P. A. Mazzali , T. Nakamura , K. Iwamoto , K. Maeda , T. Suzuki , M. Turatto , I. J. Danziger , F. Patat

The Light Curve of S Andromedae

Historical observations of S And, in combination with the color versus rate-of-decline relationship for well-observed SN 1991bg-like supernovae, are used to estimate a rate of decline Delta m15 (B) = 2.21 and an intrinsic color at maximum…

天体物理学 · 物理学 2009-11-07 Sidney van den Bergh

SN 2014C: a metamorphic supernova exploded in the intricate and hydrogen-rich surroundings

We present photometric and spectroscopic observations of supernova (SN) 2014C, primarily emphasizing the initial month after the explosion at approximately daily intervals. During this time, it was classified as a Type Ib SN exhibiting a…

高能天体物理现象 · 物理学 2024-12-10 Qian Zhai , Jujia Zhang , Weili Lin , Paolo Mazzali , Elena Pian , Stefano Benetti , Lina Tomasella , Jialian Liu , Liping Li

WFST Supernovae in the First Year: II. SN 2024aedt: Systematical Study of a Transitional Type Ia Supernova

We present comprehensive photometric and spectroscopic observations of a transitional type Ia SN 2024aedt, discovered by the 2.5-meter Wide Field Survey Telescope (WFST) within one day of the explosion. Its light curve is characterized by a…

高能天体物理现象 · 物理学 2026-02-20 Dezheng Meng , Ji-an Jiang , Xu Kong , Zelin Xu , Keiichi Maeda , Hanindyo Kuncarayakti , Lluís Galbany , Saurabh W. Jha , Željko Ivezić , Peter Yoachim , Weiyu Wu , Zhengyan Liu , Junhan Zhao , Andrew J. Connolly , Ziqing Jia , Lei Hu , Weiyu Ding , Lulu Fan , Feng Li , Ming Liang , Jinlong Tang , Zhen Wan , Hairen Wang , Jian Wang , Yongquan Xue , Hongfei Zhang , Wen Zhao , Xianzhong Zheng , Qingfeng Zhu

The Low-Velocity, Rapidly Fading Type Ia Supernova 2002es

SN 2002es is a peculiar subluminous Type Ia supernova (SN Ia) with a combination of observed characteristics never before seen in a SN Ia. At maximum light, SN 2002es shares spectroscopic properties with the underluminous SN 1991bg subclass…

宇宙学与河外天体物理 · 物理学 2015-06-04 Mohan Ganeshalingam , Weidong Li , Alexei V. Filippenko , Jeffrey M. Silverman , Ryan Chornock , Ryan J. Foley , Thomas Matheson , Robert P. Kirshner , Peter Milne , Mike Calkins , Ken J. Shen

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…

天体物理学 · 物理学 2009-01-05 V. Arsenijevic , S. Fabbro , A. M. Mourao , A. J. Rica da Silva

The Type Ia supernova 2004S, a clone of SN 2001el, and the optimal photometric bands for extinction estimation

We present optical (UBVRI) and near-infrared (YJHK) photometry of the normal Type Ia supernova 2004S. We also present eight optical spectra and one near-IR spectrum of SN 2004S. The light curves and spectra are nearly identical to those of…

天体物理学 · 物理学 2008-11-26 Kevin Krisciunas , Peter M. Garnavich , Vallery Stanishev , Nicholas B. Suntzeff , Jose Luis Prieto , Juan Espinoza , David Gonzalez , Maria Elena Salvo , Nancy Elias de la Rosa , Stephen J. Smartt , Justyn R. Maund , Rolf-Peter Kudritzki

Observations of the low-luminosity Type Iax supernova 2019gsc: a fainter clone of SN 2008ha?

We present optical photometric and spectroscopic observations of the faint-and-fast evolving type Iax SN 2019gsc, extending from the time of g-band maximum until about fifty days post maximum, when the object faded to an apparent r-band…

太阳与恒星天体物理 · 物理学 2020-06-17 Lina Tomasella , Maximilian Stritzinger , Stefano Benetti , Nancy Elias-Rosa , Enrico Cappellaro , Erkki Kankare , Peter Lundqvist , Mark Magee , Kate Maguire , Andrea Pastorello , Simon Prentice , Andrea Reguitti