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K2 Observations of SN 2018oh Reveal a Two-Component Rising Light Curve for a Type Ia Supernova

We present an exquisite, 30-min cadence Kepler (K2) light curve of the Type Ia supernova (SN Ia) 2018oh (ASASSN-18bt), starting weeks before explosion, covering the moment of explosion and the subsequent rise, and continuing past peak…

高能天体物理现象 · 物理学 2019-01-09 G. Dimitriadis , R. J. Foley , A. Rest , D. Kasen , A. L. Piro , A. Polin , D. O. Jones , A. Villar , G. Narayan , D. A. Coulter , C. D. Kilpatrick , Y. -C. Pan , C. Rojas-Bravo , O. D. Fox , S. W. Jha , P. E. Nugent , A. G. Riess , D. Scolnic , M. R. Drout , G. Barentsen , J. Dotson , M. Gully-Santiago , C. Hedges , A. M. Cody , T. Barclay , S. Howell , P. Garnavich , B. E. Tucker , E. Shaya , R. Mushotzky , R. P. Olling , S. Margheim , A. Zenteno , J. Coughlin , J. E. Van Cleve , J. Vinicius 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 , 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 , S. J. Smartt , K. W. Smith , S. Points , G. M. Strampelli , J. Brimacombe , P. Chen , J. A. Munoz , R. L. Mutel , J. Shields , P. J. Vallely , S. Villanueva , W. Li , X. Wang , J. Zhang , H. Lin , J. Mo , X. Zhao , H. Sai , X. Zhang , K. Zhang , T. Zhang , L. Wang , J. Zhang , E. Baron , J. M. DerKacy , L. Li , Z. Chen , D. Xiang , L. Rui , L. Wang , F. Huang , X. Li , G. Hosseinzadeh , D. A. Howell , I. Arcavi , D. Hiramatsu , J. Burke , S. Valenti , J. L. Tonry , L. Denneau , A. N. Heinze , H. Weiland , B. Stalder , J. Vinko , K. Sarneczky , A. Pa , A. Bodi , Zs. Bognar , B. Csak , B. Cseh , G. Csornyei , O. Hanyecz , B. Ignacz , Cs. Kalup , R. Konyves-Toth , L. Kriskovics , A. Ordasi , I. Rajmon , A. Sodor , R. Szabo , R. Szakats , G. Zsidi , S. C. Williams , J. Nordin , R. Cartier , C. Frohmaier , L. Galbany , C. P. Gutierrez , I. Hook , C. Inserra , M. Smith , D. J. Sand , J. E. Andrews , N. Smith , C. Bilinski

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

Observations of the Very Young Type Ia Supernova 2019np with Early-excess Emission

Early-time radiative signals from type Ia supernovae (SNe Ia) can provide important constraints on the explosion mechanism and the progenitor system. We present observations and analysis of SN 2019np, a nearby SN Ia discovered within 1-2…

高能天体物理现象 · 物理学 2022-06-08 Hanna Sai , Xiaofeng Wang , Nancy Elias-Rosa , Yi Yang , Jujia Zhang , Weili Lin , Jun Mo , Anthony L. Piro , Xiangyun Zeng , Reguitti Andrea , Peter Brown , Christopher R. Burns , Yongzhi Cai , Achille Fiore , Eric Y. Hsiao , Jordi Isern , K. Itagaki , Wenxiong Li , Zhitong Li , Priscila J. Pessi , M. M. Phillips , Stefan Schuldt , Melissa Shahbandeh , Maximilian D. Stritzinger , Lina Tomasella , Christian Vogl , Bo Wang , Lingzhi Wang , Chengyuan Wu , Sheng Yang , Jicheng Zhang , Tianmeng Zhang , Xinghan Zhang

Nebular Spectroscopy of Kepler's Brightest Supernova

We present late-time ($\sim$240-260 days after peak brightness) optical photometry and nebular (+236 and +264 days) spectroscopy of SN 2018oh, the brightest Type Ia supernova (SN Ia) observed by the Kepler telescope. The Kepler/K2 30-minute…

高能天体物理现象 · 物理学 2019-01-16 G. Dimitriadis , C. Rojas-Bravo , C. D. Kilpatrick , R. J. Foley , A. L. Piro , J. S. Brown , P. Guhathakurta , A. C. N. Quirk , A. Rest , G. M. Strampelli , B. E. Tucker , A. Villar

Carnegie Supernova Project: kinky $i$-band light-curves of Type Ia supernovae

We present detailed investigation of a specific $i$-band light-curve feature in Type Ia supernovae (SNe Ia) using the rapid cadence and high signal-to-noise ratio light-curves obtained by the Carnegie Supernova Project. The feature is…

宇宙学与河外天体物理 · 物理学 2021-12-22 P. J. Pessi , E. Y. Hsiao , G. Folatelli , J. P. Anderson , C. R. Burns , S. Uddin , L. Galbany , M. M. Phiilips , N. Morrell , C. Ashall , E. Baron , C. Contreras , M. Hamuy , P. Hoeflich , K. Krisciunas , S. Kumar , J. Lu , L. Martinez , A. L. Piro , M. Shahbandeh , M. D. Stritzinger , N. B. Suntzeff

Shock Breakout and Early Light Curves of Type II-P Supernovae Observed with Kepler

We discovered two transient events in the Kepler field with light curves that strongly suggest they are type II-P supernovae. Using the fast cadence of the Kepler observations we precisely estimate the rise time to maximum for KSN2011a and…

太阳与恒星天体物理 · 物理学 2016-03-30 P. M. Garnavich , B. E. Tucker , A. Rest , E. J. Shaya , R. P. Olling , D. Kasen , A. Villar

The Rising Light Curves of Type Ia Supernovae

We present an analysis of the early, rising light curves of 18 Type Ia supernovae (SNe Ia) discovered by the Palomar Transient Factory (PTF) and the La Silla-QUEST variability survey (LSQ). We fit these early data flux using a simple…

高能天体物理现象 · 物理学 2015-06-23 R. E. Firth , M. Sullivan , A. Gal-Yam , D. A. Howell , K. Maguire , P. Nugent , A. L. Piro , C. Baltay , U. Feindt , E. Hadjiyksta , R. McKinnon , E. Ofek , D. Rabinowitz , E. S. Walker

Seeing Double: ASASSN-18bt Exhibits a Two-Component Rise in the Early-Time K2 Light Curve

On 2018 Feb. 4.41, the All-Sky Automated Survey for SuperNovae (ASAS-SN) discovered ASASSN-18bt in the K2 Campaign 16 field. With a redshift of z=0.01098 and a peak apparent magnitude of B_{max}=14.31, ASASSN-18bt is the nearest and…

高能天体物理现象 · 物理学 2019-01-09 B. J. Shappee , T. W. -s. Holoien , M. R. Drout , K. Auchettl , M. D. Stritzinger , C. S. Kochanek , K. Z. Stanek , E. Shaya , G. Narayan , J. S. Brown , S. Bose , D. Bersier , J. Brimacombe , Ping Chen , Subo Dong , S. Holmbo , B. Katz , J. A. Munnoz , R. L. Mutel , R. S. Post , J. L. Prieto , J. Shields , D. Tallon , T. A. Thompson , P. J. Vallely , S. Villanueva , L. Denneau , H. Flewelling , A. N. Heinze , K. W. Smith , B. Stalder , J. L. Tonry , H. Weiland , T. Barclay , G. Barentsen , A. M. Cody , J. Dotson , F. Foerster , P. Garnavich , M. Gully-santiago , C. Hedges , S. Howell , D. Kasen , S. Margheim , R. Mushotzky , A. Rest , B. E. Tucker , A. Villar , A. Zenteno , G. Beerman , R. Bjella , G. Castillo , J. Coughlin , B. Elsaesser , S. Flynn , R. Gangopadhyay , K. Griest , M. Hanley , J. Kampmeier , R. Kloetzel , L. Kohnert , C. Labonde , R. Larsen , K. A. Larson , K. M. Mccalmont-everton , C. Mcginn , L. Migliorini , J. Moffatt , M. Muszynski , V. Nystrom , D. Osborne , M. Packard , C. A. Peterson , M. Redick , L. H. Reedy , S. E. Ross , B. Spencer , K. Steward , J. E. Van Cleve , J. Vinicius De Miranda Cardoso , T. Weschler , A. Wheaton , J. Bulger , T. B. Lowe , E. A. Magnier , A. S. B. Schultz , C. Z. Waters , M. Willman , Eddie Baron , Zhihao Chen , James M. Derkacy , Fang Huang , Linyi Li , Wenxiong Li , Xue Li , Liming Rui , Hanna Sai , Lifan Wang , Lingzhi Wang , Xiaofeng Wang , Danfeng Xiang , Jicheng Zhang , Jujia Zhang , Kaicheng Zhang , Tianmeng Zhang , Xinghan Zhang , Xulin Zhao , P. J. Brown , J. J. Hermes , J. Nordin , S. Points , G. M. Strampelli , A. Zenteno

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

Late-Time Observations of ASASSN-14lp Strengthen the Case for a Correlation between the Peak Luminosity of Type Ia Supernovae and the Shape of their Late-Time Light Curves

Late-time observations of Type Ia supernovae (SNe Ia), >900 days after explosion, have shown that this type of SN does not suffer an "IR catastrophe" at 500 days as previously predicted. Instead, several groups have observed a slow-down in…

高能天体物理现象 · 物理学 2018-10-17 Or Graur , David R. Zurek , Mihai Cara , Armin Rest , Ivo R. Seitenzahl , Benjamin J. Shappee , Michael M. Shara , Adam G. Riess

A Fast-Evolving, Luminous Transient Discovered by K2/Kepler

For decades optical time-domain searches have been tuned to find ordinary supernovae, which rise and fall in brightness over a period of weeks. Recently, supernova searches have improved their cadences and a handful of fast-evolving…

高能天体物理现象 · 物理学 2018-04-13 A. Rest , P. M. Garnavich , D. Khatami , D. Kasen , B. E. Tucker , E. J. Shaya , R. P. Olling , R. Mushotzky , A. Zenteno , S. Margheim , G. Strampelli , D. James , R. C. Smith , F. Förster , V. A. Villar

The Risetime of Nearby Type Ia Supernovae

We present calibrated photometric measurements of the earliest detections of nearby type Ia supernovae (SNe Ia). The set of ~30 new, unfiltered CCD observations delineate the early rise behavior of SNe Ia > 18 to 10 days before maximum.…

天体物理学 · 物理学 2019-08-17 Adam G. Riess , Alexei V. Filippenko , Weidong Li , Richard R. Treffers , Brian P. Schmidt , Yulei Qiu , Jingyao Hu , Mark Armstrong , Chuck Faranda , Eric Thouvenot

Early Blue Excess from the Type Ia Supernova 2017cbv and Implications for Its Progenitor

We present very early, high-cadence photometric observations of the nearby Type Ia SN 2017cbv. The light curve is unique in that it has a blue bump during the first five days of observations in the U, B, and g bands, which is clearly…

高能天体物理现象 · 物理学 2017-08-16 Griffin Hosseinzadeh , David J. Sand , Stefano Valenti , Peter Brown , D. Andrew Howell , Curtis McCully , Daniel Kasen , Iair Arcavi , K. Azalee Bostroem , Leonardo Tartaglia , Eric Y. Hsiao , Scott Davis , Melissa Shahbandeh , Maximilian D. Stritzinger

Nebular-Phase Spectra of Nearby Type Ia Supernovae

We present late-time spectra of eight Type Ia supernovae (SNe Ia) obtained at $>200$ days after peak brightness using the Gemini South and Keck telescopes. All of the SNe Ia in our sample were nearby, well separated from their host galaxy's…

高能天体物理现象 · 物理学 2017-11-08 Melissa L. Graham , Sahana Kumar , Griffin Hosseinzadeh , Daichi Hiramatsu , Iair Arcavi , D. Andrew Howell , Stefano Valenti , David J. Sand , Jerod T. Parrent , Curtis McCully , Alexei V. Filippenko

Light curve properties of SN 2017fgc and HV SNe Ia

Photometric and spectroscopic observations of type Ia supernova (SN) 2017fgc which cover the period from $-$12 to +137 days since the $B$-band maximum are presented. SN 2017fgc is a photometrically normal SN Ia with the luminosity decline…

高能天体物理现象 · 物理学 2021-03-23 Umut Burgaz , Keiichi Maeda , Belinda Kalomeni , Miho Kawabata , Masayuki Yamanaka , Koji S. Kawabata , Naoki Kawahara , Tatsuya Nakaoka

The Subluminous Type Ia Supernova 1998de in NGC 252

We present spectroscopic and extensive photometric observations of supernova (SN) 1998de in the S0 galaxy NGC 252, discovered during the course of the Lick Observatory Supernova Search. These data, which span a time period of 8 days before…

天体物理学 · 物理学 2009-10-31 Maryam Modjaz , Weidong Li , Alexei V. Filippenko , Jennifer Y. King , Douglas C. Leonard , Thomas Matheson , Richard R. Treffers , Adam G. Riess

Late-Time Spectroscopy of SN 2002cx: The Prototype of a New Subclass of Type Ia Supernovae

We present Keck optical spectra of SN 2002cx, the most peculiar known Type Ia supernova (SN Ia), taken 227 and 277 days past maximum light. Astonishingly, the spectra are not dominated by the forbidden emission lines of iron that are a…

天体物理学 · 物理学 2008-11-26 Saurabh Jha , David Branch , Ryan Chornock , Ryan J. Foley , Weidong Li , Brandon J. Swift , Darrin Casebeer , Alexei V. Filippenko

The Rise and Fall of Type Ia Supernova Light Curves in the SDSS-II Supernova Survey

We analyze the rise and fall times of type Ia supernova (SN Ia) light curves discovered by the SDSS-II Supernova Survey. From a set of 391 light curves k-corrected to the rest frame B and V bands, we find a smaller dispersion in the rising…

宇宙学与河外天体物理 · 物理学 2010-11-18 Brian T. Hayden , Peter M. Garnavich , Richard Kessler , Joshua A. Frieman , Saurabh W. Jha , David Cinabro , Benjamin Dilday , Daniel Kasen , John Marriner , Robert C. Nichol , Adam G. Riess , Masao Sako , Donald P. Schneider , Mathew Smith , Jesper Sollerman , Bruce Bassett

SN 2019zrk, a bright SN 2009ip analog with a precursor

We present photometric and spectroscopic observations of the Type IIn supernova SN 2019zrk (also known as ZTF20aacbyec). The SN shows a $\gtrsim$ 100 day precursor, with a slow rise, followed by a rapid rise to M $\sim -19.2$ in the $r$ and…

高能天体物理现象 · 物理学 2022-10-12 Claes Fransson , Jesper Sollerman , Nora L. Strotjohann , Sheng Yang , Steve Schulze , Cristina Barbarino , Erik C. Kool , Eran O. Ofek , Arien Crellin-Quick , Kishalay De , Andrew J. Drake , Christoffer Fremling , Avishay Gal-Yam , Anna Y. Q. Ho , Mansi M. Kasliwal

Optical and IR observations of SN 2002dj: some possible common properties of fast expanding SNe Ia

As part of the European Supernova Collaboration we obtained extensive photometry and spectroscopy of the type Ia SN 2002dj covering epochs from 11 days before to nearly two years after maximum. Detailed optical and near-infrared…

天体物理学 · 物理学 2009-11-13 G. Pignata , S. Benetti , P. A. Mazzali , R. Kotak , F. Patat , P. Meikle , M. Stehle , B. Leibundgut , N. B. Suntzeff , L. M. Buson , E. Cappellaro , A. Clocchiatti , M. Hamuy , J. Maza , J. Mendez , P. Ruiz-Lapuente , M. Salvo , B. P. Schmidt , M. Turatto , W. Hillebrandt