Results 11 to 20 of about 48,593 (219)
Moderately Luminous type II Supernovae [PDF]
Astronomy & Astrophysics, 2013 Core-collapse Supernovae (CC-SNe) descend from progenitors more massive than about 8 Msun. Because of the young age of the progenitors, the ejecta may eventually interact with the circumstellar medium (CSM) via highly energetic processes detectable in ...
Benetti, S. +12 more
core +8 more sources
Nucleosynthesis in Type II Supernovae [PDF]
Nuclear Physics A, 1997 Presupernova evolution and explosive nucleosynthesis in massive stars for main-sequence masses from 13 $M_\odot$ to 70 $M_\odot$ are calculated. We examine the dependence of the supernova yields on the stellar mass, $^{12}C(\alpha, \gamma) ^{16}O}$ rate,
Anders +27 more
core +4 more sources
Optical Observations of Type II Supernovae
AIP Conference Proceedings, 2000 I present an overview of optical observations (mostly spectra) of Type II supernovae. SNe II are defined by the presence of hydrogen, and exhibit a very wide variety of properties.
Filippenko, A. V.
core +2 more sources
Recent Type II Radio Supernovae
AIP Conference Proceedings, 2007 We present the results of radio observations, taken primarily with the Very Large Array, of Supernovae 1993J, 2001gd, 2001em, 2002hh, 2004dj, and 2004et. We have fit a parameterized model to the multi-frequency observations of each supernova.
C. J. Stockdale +9 more
core +2 more sources
Binary progenitor systems for Type Ic supernovae [PDF]
Nature CommunicationsCore-collapse supernovae are explosions of massive stars at the end of their evolution. They are responsible for metal production and for halting star formation, having a significant impact on galaxy evolution.
Martín Solar +20 more
doaj +2 more sources
The Iron Yield of Core-collapse Supernovae
The Astrophysical Journal, 2023 We present a systematic analysis of 191 stripped-envelope supernovae (SE SNe), aimed at computing their ^56 Ni masses from the luminosity in their radioactive tails ( ${M}_{\mathrm{Ni}}^{\mathrm{tail}}$ ) and/or in their maximum light, and the mean ^56 ...
Ósmar Rodríguez, Dan Maoz, Ehud Nakar
doaj +1 more source
Understanding Type II Supernovae [PDF]
International Astronomical Union Colloquium, 2005 SummaryWe present the results of a systematic analysis of a group of Type II plateau supernovae that span a large range in luminosities, from faint objects like SN 1997D and 1999br to very luminous events like SN 1992am. The physical properties of the supernovae appear to be related to the plateau luminosity or the expansion velocity.
Zampieri, L., Ramina, M., Pastorello, A.
openaire +3 more sources
Possible Detection of the Progenitor of the Type II Supernova SN 2023ixf
The Astrophysical Journal Letters, 2023 Stellar evolution theory predicts multiple pathways to the explosive deaths of stars as supernovae. Locating and characterizing the progenitors of well-studied supernovae is important to constrain the theory and to justify and design future surveys to ...
Joanne L Pledger, Michael M Shara
doaj +1 more source
HYDRODYNAMICAL MODELS OF TYPE II PLATEAU SUPERNOVAE [PDF]
The Astrophysical Journal, 2011 We present bolometric light curves of Type II-plateau supernovae (SNe II-P) obtained using a newly developed, one-dimensional Lagrangian hydrodynamic code with flux-limited radiation diffusion. Using our code we calculate the bolometric light curve and photospheric velocities of SN1999em obtaining a remarkably good agreement with observations despite ...
Bersten, Melina Cecilia +2 more
openaire +6 more sources
The rise-time of Type II supernovae [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We investigate the early-time light-curves of a large sample of 223 type II supernovae (SNe) from the Sloan Digital Sky Survey and the Supernova Legacy Survey. Having a cadence of a few days and sufficient non-detections prior to explosion, we constrain rise-times, i.e.
González Gaitán, Santiago +16 more
openaire +11 more sources