Results 11 to 20 of about 2,839 (226)

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

Inferring Type II-P Supernova Progenitor Masses from Plateau Luminosities

The Astrophysical Journal Letters, 2023
Connecting observations of core-collapse supernova explosions to the properties of their massive star progenitors is a long-sought, and challenging, goal of supernova science. Recently, Barker et al.
Brandon L. Barker, Evan P. O’Connor, Sean M. Couch   +2 more
doaj   +1 more source

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, $^{12}C( , ) ^{16}O}$ rate, and explosion energy.
K. Nomoto, M. Hashimoto, T. Tsujimoto, F.-K. Thielemann, N. Kishimoto, Y. Kubo, N. Nakasato   +6 more
openaire   +2 more sources

Early Time Spectropolarimetry of the Aspherical Type II Supernova SN 2023ixf

The Astrophysical Journal Letters, 2023
We present six epochs of optical spectropolarimetry of the Type II supernova (SN) 2023ixf ranging from ∼2 to 15 days after the explosion. Polarimetry was obtained with the Kast double spectrograph on the Shane 3 m telescope at Lick Observatory ...
Sergiy S. Vasylyev, Yi Yang, Alexei V. Filippenko, Kishore C. Patra, Thomas G. Brink, Lifan Wang, Ryan Chornock, Raffaella Margutti, Elinor L. Gates, Adam J. Burgasser, Preethi R. Karpoor, Natalie LeBaron, Emma Softich, Christopher A. Theissen, Eli Wiston, WeiKang Zheng   +15 more
doaj   +1 more source

DMSO solvates of tert-butylcalix[6]arene and related multisolvent structures. [PDF]

Acta Crystallogr B Struct Sci Cryst Eng Mater
This study highlights how solvent properties, host–guest interaction energies and packing preferences govern the solid‐state organization of tert‐butylcalix[6]arene, a macrocycle of importance in separation, molecular recognition and supramolecular chemistry.tert‐Butylcalix[6]arene (TBC6) exhibits a rich crystal energy landscape, with structural ...
Wanat M, Zaorska E, Malinska M.
europepmc   +2 more sources

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

SN 2022acko: The First Early Far-ultraviolet Spectra of a Type IIP Supernova

The Astrophysical Journal Letters, 2023
We present five far- and near-ultraviolet spectra of the Type II plateau supernova, SN 2022acko, obtained 5, 6, 7, 19, and 21 days after explosion, all observed with the Hubble Space Telescope/Space Telescope Imaging Spectrograph.
K. Azalee Bostroem, Luc Dessart, D. John Hillier, Michael Lundquist, Jennifer E. Andrews, David J. Sand, Yize Dong, Stefano Valenti, Joshua Haislip, Emily T. Hoang, Griffin Hosseinzadeh, Daryl Janzen, Jacob E. Jencson, Saurabh W. Jha, Vladimir Kouprianov, Jeniveve Pearson, Nicolas E. Meza Retamal, Daniel E. Reichart, Manisha Shrestha, Christopher Ashall, E. Baron, Peter J. Brown, James M. DerKacy, Joseph Farah, Lluís Galbany, J. I. González Hernández, Elizabeth Green, Peter Hoeflich, D. Andrew Howell, Lindsey A. Kwok, Curtis McCully, Tomás E. Müller-Bravo, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Jeonghee Rho, Micalyn Rowe, Michaela Schwab, Melissa Shahbandeh, Nathan Smith, Jay Strader, Giacomo Terreran, Schuyler D. Van Dyk, Samuel Wyatt   +43 more
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, Benvenuto, Omar Gustavo, Hamuy, Mario   +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, Tominaga, N., Molina, J., Galbany, Lluis, Bufano, Filomena, Anderson, Joseph P., Gutierrez, C., Förster, F., Pignata Libralato, Giuliano, Bersten, Melina, Howell, D. A., Sullivan, M., Carlberg, R., De Jaeger, Thomas, Hamuy Wackenhut, Mario, Baklanov, P. V., Blinnikov, S. I.   +16 more
openaire   +11 more sources

SN 2018gj: A Short Plateau Type II Supernova with Persistent Blueshifted Ha Emission

The Astrophysical Journal, 2023
We present an extensive, panchromatic photometric (UV, optical, and near-IR) and low-resolution optical spectroscopic coverage of a Type IIP supernova SN 2018gj that occurred on the outskirts of the host galaxy NGC 6217.
Rishabh Singh Teja, Avinash Singh, D. K. Sahu, G. C. Anupama, Brajesh Kumar, Tatsuya Nakaoka, Koji S Kawabata, Masayuki Yamanaka, Ali Takey, Miho Kawabata   +9 more
doaj   +1 more source