Results 51 to 60 of about 823 (184)

Luminosity distributions of Type Ia supernovae [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We have assembled a dataset of 165 low redshift ...
Ashall, C., Mazzali, P., Sasdelli, M., Prentice, S.   +3 more
openaire   +5 more sources

SN 2022joj: A Potential Double Detonation with a Thin Helium Shell

The Astrophysical Journal
We present photometric and spectroscopic data for SN 2022joj, a nearby peculiar Type Ia supernova (SN Ia) with a fast decline rate (Δ m _15,B = 1.4 mag).
E. Padilla Gonzalez, D. A. Howell, G. Terreran, C. McCully, M. Newsome, J. Burke, J. Farah, C. Pellegrino, K. A. Bostroem, G. Hosseinzadeh, J. Pearson, D. J. Sand, M. Shrestha, N. Smith, Y. Dong, N. Meza Retamal, S. Valenti, S. Boos, K. J. Shen, D. Townsley, L. Galbany, L. Piscarreta, R. J. Foley, M. J. Bustamante-Rosell, D. A. Coulter, R. Chornock, K. W. Davis, C. B. Dickinson, D. O. Jones, J. Kutcka, X. K. Le Saux, C. R. Rojas-Bravo, K. Taggart, S. Tinyanont, G. Yang, S. W. Jha, R. Margutti   +36 more
doaj   +1 more source

The Progenitors of Superluminous Type Ia Supernovae

The Astrophysical Journal, 2023
Recent observations of type Ia supernovae (SNe Ia) have discovered a subclass of “super-Chandrasekhar” SNe Ia (SC SNe Ia) whose high luminosities and low ejecta velocities suggest that they originate from the explosions of white dwarfs (WDs) with masses ...
Margot Fitz Axen, Peter Nugent
doaj   +1 more source

Organocatalytic C─O Bond Cleavage and Asymmetric Transformations via [1,3]‐Sigmatropic Rearrangement

Advanced Science, Volume 12, Issue 29, August 7, 2025.
A direct asymmetric strategy for fulfilling the functional group transfer by aryl ether cleavage and migration is developed, representing the first Brønsted base‐catalyzed asymmetric [1,3]‐sigmatropic rearrangement reaction. The resulting chiral benzofuran products generated through this strategy exhibit significant 3D‐dimensionality and demonstrate ...
Lei Peng, Yu Chang, Liangchen Yin, Jinbang Zhang, Xuli Feng, Pengfei Wang, Wenling Qin, Hailong Yan   +7 more
wiley   +1 more source

Type Ia supernovae: spectroscopic surprises [PDF]

, 2004
Recent observations have extended the range of diversity among spectra of Type Ia supernovae. I briefly discuss SN Ia explosion models in the spectroscopic context, the observed diversity, and some recent results from direct analysis with the Synow code for one normal and two peculiar SNe Ia.
openaire   +2 more sources

EARLY EMISSION FROM TYPE Ia SUPERNOVAE [PDF]

The Astrophysical Journal, 2012
A unique feature of deflagration-to-detonation (DDT) white dwarf explosion models of SNe of type Ia is the presence of a strong shock wave propagating through the outer envelope. We consider the early emission expected in such models, which is produced by the expanding shock-heated outer part of the ejecta and precedes the emission driven by ...
Rabinak, Itay, Livne, Eli, Waxman, Eli
openaire   +2 more sources

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

The Astrophysical Journal Letters, 2023
We present JWST near-infrared (NIR) and mid-infrared (MIR) spectroscopic observations of the nearby normal Type Ia supernova (SN) SN 2021aefx in the nebular phase at +255 days past maximum light.
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 Flörs, 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, Tamás Szalai, Chris Ashall, E. Baron, Chris R. Burns, James M. DerKacy, Tyco Mera Evans, Alec Fisher, Lluís 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   +57 more
doaj   +1 more source

Progenitors of Supernovae Type Ia

, 2013
6 pages, 6 figures, appeared in proceedings for "The 18th European White Dwarf Workshop"
Toonen, Silvia, Nelemans, Gijs, Bours, Madelon, Portegies Zwart, Simon, Claeys, Joke, Mennekens, Nicki, Ruiter, Ashley   +6 more
openaire   +4 more sources

Ultraviolet diversity of Type Ia Supernovae [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
9 pages, 6 figures, submitted to ...
Foley, Ryan J., Pan, Yen-Chen, Brown, P., Filippenko, A. V., Fox, O. D., Hillebrandt, W., Kirshner, R. P., Marion, G. H., Milne, P. A., Parrent, J. T., Pignata, G., Stritzinger, M. D.   +11 more
openaire   +5 more sources

Extrapolation of Type Ia Supernova Spectra into the Near-infrared Using Principal Component Analysis

The Astrophysical Journal
We present a method of extrapolating the spectroscopic behavior of Type Ia supernovae (SNe Ia) in the near-infrared (NIR) wavelength regime up to 2.30 μ m using optical spectroscopy.
Anthony Burrow, E. Baron, Christopher R. Burns, Eric Y. Hsiao, Jing Lu, Chris Ashall, Peter J. Brown, James M. DerKacy, G. Folatelli, Lluís Galbany, P. Hoeflich, Kevin Krisciunas, N. Morrell, M. M. Phillips, Benjamin J. Shappee, Maximilian D. Stritzinger, Nicholas B. Suntzeff   +16 more
doaj   +1 more source