Results 41 to 50 of about 49,186 (262)

DUST AND THE TYPE II-PLATEAU SUPERNOVA 2004dj [PDF]

The Astrophysical Journal, 2011
ApJ in press; minor changes c.f ...
Meikle, W.P.S., Kotak, Rubina, Farrah, D., Mattila, S., Van Dyk, S.D., Andersen, A., Fesen, R., Filippenko, A.V., Foley, R.J., Fransson, C., Gerardy, C.L., Hoeflich, P.A., Lundqvist, P., Pozzo, M., Sollerman, J., Wheeler, C.   +15 more
openaire   +4 more sources

Lambda-Cold Dark Matter, Stellar Feedback, and the Galactic Halo Abundance Pattern [PDF]

, 2005
(Abridged) The hierarchical formation scenario for the stellar halo requires the accretion and disruption of dwarf galaxies, yet low-metallicity halo stars are enriched in alpha-elements compared to similar, low-metallicity stars in dwarf spheroidal ...
Andreea S. Font, Bondi H., Brant Robertson, Devriendt J. E. G., Gratton R. G., Gratton R. G., Gratton R. G., Greggio L., Hill V., Hill V., Hill V., Hill V., James S. Bullock, Jasniewicz G., Kathryn V. Johnston, Lacey C., Lars Hernquist, Matteucci F., Matteucci F., Matteucci F., Moore B., Nissen P. E., Pagel B. E. J., Schaller G., Tinsley B. M., Tinsley B. M., Tsujimoto T., Unavane M.   +27 more
core   +2 more sources

Spectral modeling of type II supernovae [PDF]

Astronomy & Astrophysics, 2019
We present substantial extensions to the Monte Carlo radiative transfer code TARDIS to perform spectral synthesis for type II supernovae. By incorporating a non-LTE ionization and excitation treatment for hydrogen, a full account of free–free and bound-free processes, a self-consistent determination of the thermal state and by improving the handling of
C. Vogl, S. A. Sim, U. M. Noebauer, W. E. Kerzendorf, W. Hillebrandt   +4 more
openaire   +5 more sources

Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe

The Astrophysical Journal, 2023
SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and are broadly characterized by their long rises to peak.
Tawny Sit, Mansi M. Kasliwal, Anastasios Tzanidakis, Kishalay De, Christoffer Fremling, Jesper Sollerman, Avishay Gal-Yam, Adam A. Miller, Scott Adams, Robert Aloisi, Igor Andreoni, Matthew Chu, David Cook, Kaustav Kashyap Das, Alison Dugas, Steven L. Groom, Anna Y. Q. Ho, Viraj Karambelkar, James D. Neill, Frank J. Masci, Michael S. Medford, Josiah Purdum, Yashvi Sharma, Roger Smith, Robert Stein, Lin Yan, Yuhan Yao, Chaoran Zhang   +27 more
doaj   +1 more source

Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations [PDF]

The Astrophysical Journal, 2017
We present an analysis of observed trends and correlations between a large range of spectral and photometric parameters of more than 100 type II supernovae (SNe~II), during the photospheric phase. We define a common epoch for all SNe of 50 days post-explosion where the majority of the sample is likely to be under similar physical conditions.
Claudia P. Gutiérrez, Joseph P. Anderson, Mario Hamuy, Santiago González-Gaitan, Lluis Galbany, Luc Dessart, Maximilian D. Stritzinger, Mark M. Phillips, Nidia Morrell, Gastón Folatelli   +9 more
openaire   +8 more sources

Radiative Acceleration of Dense Circumstellar Material in Interacting Supernovae

The Astrophysical Journal, 2023
Early-time light curves/spectra of some hydrogen-rich supernovae (SNe) provide solid evidence of the existence of confined, dense circumstellar matter (CSM) surrounding dying massive stars. We numerically and analytically study the radiative acceleration
Daichi Tsuna, Kohta Murase, Takashi J. Moriya   +2 more
doaj   +1 more source

Strangelet spectra from type II supernovae [PDF]

, 1998
We study in this work the fate of strangelets injected as a contamination in the tail of a "strange matter-driven" supernova shock. A simple model for the fragmentation and braking of the strangelets when they pass through the expanding oxygen shell is ...
A. De Rújula, A. R. Bodmer, C. Alcock, C. Lattes, E. Farhi, E. P. Gilson, E. Witten, F. C. Michel, G. A. Medina Tanco, H. Heiselberg, H. Vucetich, J. D. Bjorken, J. E. Horvath, J. Madsen, J. Madsen, K. Pretzl, K. Takahashi, M. A. Alpar, M. Ichimura, M. S. Berger, N. K. Glendenning, O. G. Benvenuto, O. G. Benvenuto, O. G. Benvenuto, O. G. Benvenuto, O. G. Benvenuto, O. G. Benvenuto, O. G. Benvenuto, P. B. Price, P. Haensel, R. N. Boyd, S. A. Chin, T. Saito, W. Fowler   +33 more
core   +2 more sources

TYPE II-P SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY AND THE STANDARDIZED CANDLE METHOD [PDF]

The Astrophysical Journal, 2009
Accepted for publication by ApJ; data used in this paper can be downloaded from http://sdssdp47.fnal.gov/sdsssn/photometry/SNIIp.tgz; citation errors ...
D’andrea, Chris B., Sako, Masao, Dilday, Benjamin, Frieman, Joshua A., Holtzman, Jon A., Kessler, Richard, Konishi, Kohki, Schneider, Donald P., Sollerman, Jesper, Wheeler, J. Craig, Yasuda, Naoki, Cinabro, David, Jha, Saurabh W., Nichol, Robert C., Lampeitl, Hubert, Smith, Mathew, Atlee, David W., Bassett, Bruce A., Castander, Francisco Javier, Goobar, Ariel, Miquel, Ramon, Nordin, Jakob, Ostman, Linda, Prieto, Jose Luis, Quimby, Robert, Riess, Adam G., Stritzinger, Maximilian D.   +26 more
openaire   +7 more sources

SN 2023ixf in the Pinwheel Galaxy M101: From Shock Breakout to the Nebular Phase

The Astrophysical Journal
We present photometric and spectroscopic observations of supernova SN 2023ixf covering from day 1 to 442 days after explosion. SN 2023ixf reached a peak V -band absolute magnitude of −18.2 ± 0.07, and light curves show that it has a relatively short ...
WeiKang Zheng, Luc Dessart, Alexei V. Filippenko, Yi Yang, Thomas G. Brink, Thomas de Jaeger, Sergiy S. Vasylyev, Schuyler D. Van Dyk, Kishore C. Patra, Wynn V. Jacobson-Galán, Gabrielle E. Stewart, Efrain Alvarado III, Veda Arikatla, Pallas Beddow, Andreas Betz, Emma Born, Kate Bostow, Adam J. Burgasser, Osmin Caceres, Evan M. Carrasco, Elma Chuang, Asia DeGraw, Elinor L. Gates, Eli Gendreau-Distler, Cooper Jacobus, Connor Jennings, Preethi R. Karpoor, Paul Lynam, Ann Mina, Katherine Mora, Neil Pichay, Jyotsna Ravi, Jon Rees, R. Michael Rich, Sophia Risin, Nathan R. Sandford, Alessandro Savino, Emma Softich, Christopher A. Theissen, Edgar P. Vidal, William Wu, Yoomee Zeng   +41 more
doaj   +1 more source

Aluminum versus Gallium: Differences in Bis(bis(trimethylsilyl)methyl) Element Halides, Hydrides, and Oxygen‐Bridged E/P Frustrated Lewis Pairs

ChemistryEurope, EarlyView.
Reacting Bis2GaBr (Bis = CH(SiMe3)2) with Bis2AlH selectively yields Bis2GaH, a monomeric hydride in solution, characterized by diffusion ordered spectroscopy NMR, infrared spectroscopy and indirectly via hydrogallation. A one‐pot route enables frustrated Lewis pairs Bis2EOPtBu2 (E = Al, Ga), with the gallium analog splitting H2 and showing a dynamic ...
Julian Buth, Maximilian J. Klingsiek, Yury V. Vishnevskiy, Andreas Mix, Jan-Hendrik Lamm, Beate Neumann, Hans-Georg Stammler, Norbert Werner Mitzel   +7 more
wiley   +1 more source