Results 31 to 40 of about 48,520 (216)

An updated Type II supernova Hubble diagram [PDF]

Astronomy & Astrophysics, 2018
We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 ≲z≲ 0.335 range, with a view to re-examining their utility as distance indicators. Specifically, we apply the expanding photosphere method (EPM) and the standardized candle method (SCM) to each target, and find that both methods yield distances that ...
Gall, E. E. E., Kotak, R., Leibundgut, B., Taubenberger, S., Hillebrandt, W., Kromer, M., Burgett, W. S., Chambers, K., Flewelling, H., Huber, M. E., Kaiser, N., Kudritzki, R. P., Magnier, E. A., Metcalfe, N., Smith, K., Tonry, J. L., Wainscoat, R. J., Waters, C.   +17 more
openaire   +5 more sources

A sample of Type II-L supernovae [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
MNRAS in ...
Faran, T., Poznanski, D., Filippenko, A. V., Chornock, R., Foley, R. J., Ganeshalingam, M., Leonard, D. C., Li, W., Modjaz, M., Serduke, F. J. D., Silverman, J. M.   +10 more
openaire   +2 more sources

Nlte-Effects in Supernovae Type II Photospheres [PDF]

Highlights of Astronomy, 1986
AbstractIn order to provide accurate fluxes of supernovae Type II as needed for the application of the Baade-Wesselink method we have constructed spherical model photospheres for these objects under the assumption that hydrogen and helium are in statistical equilibrium.
P. Höflich, R. Wehrse, G. Shaviv
openaire   +1 more source

Dust formation in primordial Type II supernovae [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
11 pages, LaTeX, 11 figures, MNRAS ...
Todini, Paolo, Ferrara, Andrea
openaire   +2 more sources

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

SN 2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova

The Astrophysical Journal Letters, 2023
We present preexplosion optical and infrared (IR) imaging at the site of the type II supernova (SN II) 2023ixf in Messier 101 at 6.9 Mpc. We astrometrically registered a ground-based image of SN 2023ixf to archival Hubble Space Telescope (HST), Spitzer ...
Charles D. Kilpatrick, Ryan J. Foley, Wynn V. Jacobson-Galán, Anthony L. Piro, Stephen J. Smartt, Maria R. Drout, Alexander Gagliano, Christa Gall, Jens Hjorth, David O. Jones, Kaisey S. Mandel, Raffaella Margutti, Enrico Ramirez-Ruiz, Conor L. Ransome, V. Ashley Villar, David A. Coulter, Hua Gao, David Jacob Matthews, Kirsty Taggart, Yossef Zenati   +19 more
doaj   +1 more source

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

Observational constraints on the progenitors of core-collapse supernovae : the case for missing high mass stars [PDF]

, 2015
Over the last 15 years, the supernova community has endeavoured to identify progenitor stars of core-collapse supernovae in high resolution archival images of their galaxies.This review compiles results (from 1999 - 2013) in a distance limited sample and
Smartt, S. J.
core   +1 more source

The Prevalence and Influence of Circumstellar Material around Hydrogen-rich Supernova Progenitors

The Astrophysical Journal, 2023
Narrow transient emission lines (flash-ionization features) in early supernova (SN) spectra trace the presence of circumstellar material (CSM) around the massive progenitor stars of core-collapse SNe.
Rachel J. Bruch, Avishay Gal-Yam, Ofer Yaron, Ping Chen, Nora L. Strotjohann, Ido Irani, Erez Zimmerman, Steve Schulze, Yi Yang, Young-Lo Kim, Mattia Bulla, Jesper Sollerman, Mickael Rigault, Eran Ofek, Maayane Soumagnac, Frank J. Masci, Christoffer Fremling, Daniel Perley, Jakob Nordin, S. Bradley Cenko, Anna Y. Q. Ho, S. Adams, Igor Adreoni, Eric C. Bellm, Nadia Blagorodnova, Kevin Burdge, Kishalay De, Richard G. Dekany, Suhail Dhawan, Andrew J. Drake, Dmitry A. Duev, Matthew Graham, Melissa L. Graham, Jacob Jencson, Emir Karamehmetoglu, Mansi M. Kasliwal, Shrinivas Kulkarni, A. A. Miller, James D. Neill, Thomas A. Prince, Reed Riddle, Benjamin Rusholme, Y. Sharma, Roger Smith, Niharika Sravan, Kirsty Taggart, Richard Walters, Lin Yan   +47 more
doaj   +1 more source

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