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An Early-Time Infrared and Optical Study of the Type Ia Supernova 1998bu in M96

We present first-season infrared (IR) and optical photometry and spectroscopy of the Type Ia Supernova 1998bu in M96. We also report optical polarimetry of this event. SN1998bu is one of the closest type Ia Supernovae of modern times and…

Astrophysics · Physics 2009-10-31 M. Hernandez , W. P. S. Meikle , A. Aparicio , C. R. Benn , M. R. Burleigh , A. C. Chrysostomou , A. J. L. Fernandes , T. R. Geballe , P. L. Hammersley , J. Iglesias-Paramo , D. J. James , P. A. James , S. N. Kemp , T. A. Lister , D. Martinez-Delgado , A. Oscoz , D. L. Pollacco , M. Rozas , S. J. Smartt , P. Sorensen , R. A. Swaters , J. H. Telting , W. D. Vacca , N. A. Walton , M. R. Zapatero-Osorio

Optical Observations of the Nearby Type Ia Supernova 2021hpr

We present the optical photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2021hpr. The observations covered the phase of $-$14.37 to +63.68 days relative to its maximum luminosity in the $B$ band. The evolution…

High Energy Astrophysical Phenomena · Physics 2022-07-19 Yu Zhang , Tianmeng Zhang , Danzengluobu , Zhitong Li , Pinsong Zhao , Bingqing Zhang , Lin Du , Yinan Zhu , Hong Wu

The Young and Bright Type Ia Supernova ASASSN-14lp: Discovery, Early-Time Observations, First-Light Time, Distance to NGC 4666, and Progenitor Constraints

On 2014 Dec. 9.61, the All-Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin") discovered ASASSN-14lp just $\sim2$ days after first light using a global array of 14-cm diameter telescopes. ASASSN-14lp went on to become a bright…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-03 B. J. Shappee , A. L. Piro , T. W. -S. Holoien , J. L. Prieto , C. Contreras , K. Itagaki , C. R. Burns , C. S. Kochanek , K. Z. Stanek , E. Alper , U. Basu , J. F. Beacom , D. Bersier , J. Brimacombe , E. Conseil , A. B. Danilet , Subo Dong , E. Falco , D. Grupe , E. Y. Hsiao , S. Kiyota , N. Morrell , J. Nicolas , M. M. Phillips , G. Pojmanski , G. Simonian , M. Stritzinger , D. M. Szczygieł , T. A. Thompson , J. Thorstensen , M. Wagner , P. R. Woźniak

First Results from the La Silla-QUEST Supernova Survey and the Carnegie Supernova Project

The LaSilla/QUEST Variability Survey (LSQ) and the Carnegie Supernova Project (CSP II) are collaborating to discover and obtain photometric light curves for a large sample of low redshift (z < 0.1) Type Ia supernovae. The supernovae are…

Cosmology and Nongalactic Astrophysics · Physics 2016-03-30 E. S. Walker , C. Baltay , A. Campillay , C. Citrenbaum , C. Contreras , N. Ellman , U. Feindt , C. Gonzalez , M. L. Graham , E. Hadjiyska , E. Y. Hsiao , K. Krisciunas , R. McKinnon , K. Ment , N. Morrell , P. Nugent , M. Phillips , D. Rabinowitz , S. Rostami , J. Seron , M. Stritzinger , M. Sullivan , B. E. Tucker

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…

High Energy Astrophysical Phenomena · Physics 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

Nearby Supernova Factory Observations of SN 2005gj: Another Type Ia Supernova in a Massive Circumstellar Envelope

We report Nearby Supernova Factory observations of SN 2005gj, the second confirmed case of a "hybrid" Type Ia/IIn supernova. Our early-phase photometry of SN 2005gj shows that the interaction is much stronger than for the prototype, SN…

Astrophysics · Physics 2010-11-11 The Nearby Supernova Factory Collaboration , G. Aldering , P. Antilogus , S. Bailey , C. Baltay , A. Bauer , N. Blanc , S. Bongard , Y. Copin , E. Gangler , S. Gilles , R. Kessler , D. Kocevski , B. C. Lee , S. Loken , P. Nugent , R. Pain , E. Pecontal , R. Pereira , S. Perlmutter , D. Rabinowitz , G. Rigaudier , R. Scalzo , G. Smadja , R. C. Thomas , L. Wang , B. A. Weaver

Supernovae photometry at OAUNI

We analyse photometric data of nine supernovae (SNe) in filters V, R and I obtained during observational campaigns at the OAUNI site in 2016, 2017 and 2023. The calibrated magnitudes of the observed SNe were compared with their respective…

High Energy Astrophysical Phenomena · Physics 2024-06-24 Miguel Espinoza , Antonio Pereyra

Type Ia Supernova Properties as a Function of the Distance to the Host Galaxy in the SDSS-II SN Survey

We use type-Ia supernovae (SNe Ia) discovered by the SDSS-II SN Survey to search for dependencies between SN Ia properties and the projected distance to the host galaxy center, using the distance as a proxy for local galaxy properties…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-06 Lluis Galbany , Ramon Miquel , Linda Ostman , Peter J. Brown , David Cinabro , Chris B. D'Andrea , Joshua Frieman , Saurabh W. Jha , John Marriner , Robert C. Nichol , Jakob Nordin , Matthew D. Olmstead , Masao Sako , Donald P. Schneider , Mathew Smith , Jesper Sollerman , Kaike Pan , Stephanie Snedden , Dmitry Bizyaev , Howard Brewington , Elena Malanushenko , Viktor Malanushenko , Dan Oravetz , Audrey Simmons , Alaina Shelden

Cosmological Constraints from Measurements of Type Ia Supernovae discovered during the first 1.5 years of the Pan-STARRS1 Survey

We present griz light curves of 146 spectroscopically confirmed Type Ia Supernovae ($0.03 < z <0.65$) discovered during the first 1.5 years of the Pan-STARRS1 Medium Deep Survey. The Pan-STARRS1 natural photometric system is determined by a…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 A. Rest , D. Scolnic , R. J. Foley , M. E. Huber , R. Chornock , G. Narayan , J. L. Tonry , E. Berger , A. M. Soderberg , C. W. Stubbs , A. Riess , R. P. Kirshner , S. J. Smartt , E. Schlafly , S. Rodney , M. T. Botticella , D. Brout , P. Challis , I. Czekala , M. Drout , M. J. Hudson , R. Kotak , C. Leibler , R. Lunnan , G. H. Marion , M. McCrum , D. Milisavljevic , A. Pastorello , N. E. Sanders , K. Smith , E. Stafford , D. Thilker , S. Valenti , W. M. Wood-Vasey , Z. Zheng , W. S. Burgett , K. C. Chambers , L. Denneau , P. W. Draper , H. Flewelling , K. W. Hodapp , N. Kaiser , R. P. Kudritzki , E. A. Magnier , N. Metcalfe , P. A. Price , W. Sweeney , R. Wainscoat , C. Waters

CfA4: Light Curves for 94 Type Ia Supernovae

We present multi-band optical photometry of 94 spectroscopically-confirmed Type Ia supernovae (SN Ia) in the redshift range 0.0055 to 0.073, obtained between 2006 and 2011. There are a total of 5522 light curve points. We show that our…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Malcolm Hicken , Peter Challis , Robert P. Kirshner , Armin Rest , Claire E. Cramer , W. Michael Wood-Vasey , Gaspar Bakos , Perry Berlind , Warren R. Brown , Nelson Caldwell , Mike Calkins , Thayne Currie , Kathy de Kleer , Gil Esquerdo , Mark Everett , Emilio Falco , Jose Fernandez , Andrew S. Friedman , Ted Groner , Joel Hartman , Matthew J. Holman , Robert Hutchins , Sonia Keys , David Kipping , Dave Latham , George H. Marion , Gautham Narayan , Michael Pahre , Andras Pal , Wayne Peters , Gopakumar Perumpilly , Ben Ripman , Brigitta Sipocz , Andrew Szentgyorgyi , Sumin Tang , Manuel A. P. Torres , Amali Vaz , Scott Wolk , Andreas Zezas

The light curves of type Ia Supernova 2008gy

CCD BVRI photometry is presented for type Ia supernova 2008gy. The light curves match the template curves for fast-declining SN Ia, but the colors appear redder than average, and the SN may also be slightly subluminous. SN 2008gy is found…

Solar and Stellar Astrophysics · Physics 2010-04-30 D. Yu. Tsvetkov , P. Balanutsa , E. S. Gorbovskoy , D. A. Kuvshinov , A. V. Krylov , T. Kopytova , T. Kryachko , S. Korotkiy

Supernovae and Gaia

Despite decades of dedicated efforts there are still basic questions to answer with regard to Supernova progenitor systems and explosion mechanisms. In particular, in the last years a number of exceptionally bright objects and extremely…

Solar and Stellar Astrophysics · Physics 2015-06-04 Giuseppe Altavilla , Maria Teresa Botticella , Enrico Cappellaro , Massimo Turatto

Absolute Distances to Nearby Type Ia Supernovae via Light Curve Fitting Methods

We present a comparative study of absolute distances to a sample of very nearby, bright Type Ia supernovae (SNe) derived from high cadence, high signal-to-noise, multi-band photometric data. Our sample consists of four SNe: 2012cg, 2012ht,…

High Energy Astrophysical Phenomena · Physics 2018-05-02 J. Vinkó , A. Ordasi , T. Szalai , K. Sárneczky , E. Bányai , I. B. Bíró , T. Borkovits , T. Hegedüs , G. Hodosán , J. Kelemen , P. Klagyivik , L. Kriskovics , E. Kun , G. H. Marion , G. Marschalkó , L. Molnár , A. P. Nagy , A. Pál , J. M. Silverman , R. Szakáts , E. Szegedi-Elek , P. Székely , A. Szing , K. Vida , J. C. Wheeler

SN 2013aa and SN 2017cbv: Two Sibling Type Ia Supernovae in the spiral galaxy NGC 5643

We present photometric and spectroscopic observations of SN 2013aa and SN 2017cbv, two nearly identical type Ia supernovae (SNe Ia) in the host galaxy NGC 5643. The optical photometry has been obtained using the same telescope and…

Solar and Stellar Astrophysics · Physics 2020-06-10 Christopher R Burns , Chris Ashall , Carlos Contreras , Peter Brown , Maximilian Stritzinger , M M Phillips , Ricardo Flores , Nicholas B Suntzeff , Eric Y Hsiao , Syed Uddin , Joshua D Simon , Kevin Krisciunas , Abdo Campillay , Ryan J Foley , Wendy L Freedman , Lluís Galbany , Consuelo González , Peter Hoeflich , S Holmbo , Charles D Kilpatrick , Robert P Kirshner , Nidia Morrell , Nahir Muñoz-Elgueta , Anthony L Piro , César Rojas-Bravo , David Sand , Jaime Vargas-González , Natalie Ulloa , Jorge Anais Vilchez

The Farthest Known Supernova: Support for an Accelerating Universe and a Glimpse of the Epoch of Deceleration

We present photometric observations of an apparent Type Ia supernova (SN Ia) at a redshift of ~1.7, the farthest SN observed to date. SN 1997ff, was discovered in a repeat observation by the HST of the HDF-), and serendipitously monitored…

Astrophysics · Physics 2014-10-13 Adam G. Riess , Peter E. Nugent , Brian P. Schmidt , John Tonry , Mark Dickinson , Ronald L. Gilliland , Rodger I. Thompson , Tamas Budavari , Stefano Casertano , Aaron S. Evans , Alexei V. Filippenko , Mario Livio , David B. Sanders , Alice E. Shapley , Hyron Spinrad , Charles C. Steidel , Daniel Stern , Jason Surace , Sylvain Veilleux

The Type Ia Supernova 2021hem: A 2003fg-like Event in an Apparently Hostless Environment

We report observations of Type Ia SN 2021hem, located in an apparently hostless environment. With a peak absolute B-band magnitude of -19.96 mag, and a lack of secondary maximum in near-infrared and i-band light curves make it resemble…

High Energy Astrophysical Phenomena · Physics 2026-02-18 Subhash Bose , M. D. Stritzinger , A. Malmgaard , C. J. Miller , N. Elias-Rosa , J. P. U. Fynbo , C. Ashall , C. R. Burns , J. M. DerKacy , L. Galbany , C. P. Gutiérrez , W. B. Hoogendam , E. Y. Hsiao , E. A. M. Jensen , K. Medler , Alaa Alburai , J. Anderson , E. Baron , J. Duarte , M. Gromadzki , C. Inserra , P. A. Mazzali , T. E. Müller-Bravo , P. Lundqvist , A. Reguitti , I. Salmaso , D. J. Sand , G. Valerin

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

Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory

We present 32 epochs of optical (3300-9700 \AA) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extending from -15 to +97 d with respect to B-band maximum,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 R. Pereira , R. C. Thomas , G. Aldering , P. Antilogus , C. Baltay , S. Benitez-Herrera , S. Bongard , C. Buton , A. Canto , F. Cellier-Holzem , J. Chen , M. Childress , N. Chotard , Y. Copin , H. K. Fakhouri , M. Fink , D. Fouchez , E. Gangler , J. Guy , W. Hillebrandt , E. Y. Hsiao , M. Kerschhaggl , M. Kowalski , M. Kromer , J. Nordin , P. Nugent , K. Paech , R. Pain , E. Pécontal , S. Perlmutter , D. Rabinowitz , M. Rigault , K. Runge , C. Saunders , G. Smadja , C. Tao , S. Taubenberger , A. Tilquin , C. Wu

Supernova host galaxy association and photometric classification of over 10,000 light curves from the Zwicky Transient Facility

Here we present a catalog of 12,993 photometrically-classified supernova-like light curves from the Zwicky Transient Facility, along with candidate host galaxy associations. By training a random forest classifier on spectroscopically…

High Energy Astrophysical Phenomena · Physics 2022-02-21 Braden Garretson , Dan Milisavljevic , Jack Reynolds , Kathryn E. Weil , Bhagya Subrayan , John Banovetz , Rachel Lee

Optical Light Curves of Supernovae

Photometry is the most easily acquired information about supernovae. The light curves constructed from regular imaging provide signatures not only for the energy input, the radiation escape, the local environment and the progenitor stars,…

Astrophysics · Physics 2016-04-13 Bruno Leibundgut , Nicholas B. Suntzeff