Results 111 to 120 of about 48,593 (219)

Observational constraints on the progenitor metallicities of core-collapse supernovae

, 2010
We present constraints on the progenitor metallicities of core-collapse supernovae. To date, nearly all metallicity constraints have been inferred from indirect methods such as metallicity gradients in host galaxies, luminosities of host galaxies, or ...
Allende Prieto, Anderson, Anderson, Asplund, Baldwin, Barbon, Barbon, Bartunov, Blaauw, Boissier, Cardelli, Crowther, Eldridge, Eldridge, Filippenko, Filippenko, Garnett, Gaskell, Georgy, Habergham, Hakobyan, Heger, Henry, J. P. Anderson, James, James, Kewley, Kudritzki, Levesque, Levesque, M. Hamuy, Meynet, Modjaz, Mokiem, P. A. James, Pettini, Podsiadlowski, Prantzos, Prieto, Puls, R. A. Covarrubias, S. M. Habergham, Sahu, Schlegel, Smartt, Smartt, Tanaka, Thöne, Tsvetkov, Van Den Bergh, Young   +50 more
core   +2 more sources

Discovery of a Variable Yellow Supergiant Progenitor for the Type IIb SN 2024abfo

The Astrophysical Journal Letters
We report the discovery of a progenitor candidate for the Type IIb SN 2024abfo using multiepoch pre-explosion images from the Hubble Space Telescope and the Dark Energy Camera Legacy Survey.
Zexi Niu, Ning-Chen Sun, Justyn R. Maund, Zhen Guo, Wenxiong Li, Meng Sun, Jifeng Liu   +6 more
doaj   +1 more source

Discovery of a Dusty Yellow Supergiant Progenitor for the Type IIb SN 2017gkk

The Astrophysical Journal Letters
Type IIb supernovae are an important subclass of stripped-envelope supernovae (SNe), which show H lines only at early times. Their progenitors are believed to contain a low-mass H envelope before explosion. This work reports the discovery of a progenitor
Zexi Niu, Ning-Chen Sun, Jifeng Liu
doaj   +1 more source

Spectral Modeling of Type II Supernovae [PDF]

AIP Conference Proceedings, 2007
Using models of the SN~IIP 2005cs, we show that detailed spectral analysis can be used to determine reddening and abundances.
openaire   +2 more sources

JWST MIRI Imager Observations of Supernova SN 1987A

The Astrophysical Journal
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 yr, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta, and the surrounding ...
P. Bouchet, R. Gastaud, A. Coulais, M. J. Barlow, C. Fransson, P. J. Kavanagh, J. Larsson, T. Temim, O. C. Jones, A. S. Hirschauer, T. Tikkanen, J. A. D. L. Blommaert, O. D. Fox, A. Glasse, N. Habel, J. Hjorth, J. Jaspers, O. Krause, R. M. Lau, L. Lenkić, M. Meixner, O. Nayak, A. Rest, B. Sargent, R. Wesson, G. S. Wright, L. Colina, E. F. van Dishoeck, M. Güdel, Th. Henning, P.-O. Lagage, G. Östlin, T. P. Ray, B. Vandenbussche   +33 more
doaj   +1 more source

Neutrinos from Type-II Supernovae

Abstract In our work we investigate the stellar surface fluxes of different neutrino flavors, both with and without matter effects, while aiming to consider the varying density of the progenitor star to reveal intriguing variations in their behavior. By examining both normal and inverted neutrino mass hierarchies in studies of neutrino fluxes,
Leen Binchi, Amine Ahriche
openaire   +1 more source

Revealing the Diversity of Type IIn Supernova Progenitors through Their Environments

The Astrophysical Journal
Type IIn supernovae (SNe IIn) are hydrogen-rich explosions embedded in dense circumstellar medium, which gives rise to their characteristic narrow hydrogen emission lines.
Zexi Niu, Ning-Chen Sun, Emmanouil Zapartas, Conor L. Ransome, Justyn R. Maund, Cesar Rojas-Bravo, Jifeng Liu   +6 more
doaj   +1 more source

SN 2023ixf in Messier 101: The Twilight Years of the Progenitor as Seen by Pan-STARRS

The Astrophysical Journal
The nearby type II supernova, SN 2023ixf in M101 exhibits signatures of early time interaction with circumstellar material in the first week postexplosion. This material may be the consequence of prior mass loss suffered by the progenitor, which possibly
Conor L. Ransome, V. Ashley Villar, Anna Tartaglia, Sebastian Javier Gonzalez, Wynn V. Jacobson-Galán, Charles D. Kilpatrick, Raffaella Margutti, Ryan J. Foley, Matthew Grayling, Yuan Qi Ni, Ricardo Yarza, Christine Ye, Katie Auchettl, Thomas de Boer, Kenneth C. Chambers, David A. Coulter, Maria R. Drout, Diego Farias, Christa Gall, Hua Gao, Mark E. Huber, Adaeze L. Ibik, David O. Jones, Nandita Khetan, Chien-Cheng Lin, Collin A. Politsch, Sandra I. Raimundo, Armin Rest, Richard J. Wainscoat, S. Karthik Yadavalli, Yossef Zenati   +30 more
doaj   +1 more source

The Red Supergiant Progenitor Luminosity Problem

The Astrophysical Journal
Analysis of pre-explosion imaging has confirmed red supergiants (RSGs) as the progenitors to Type II-P supernovae (SNe). However, extracting an RSG's luminosity requires assumptions regarding the star’s temperature or spectral type and the corresponding ...
Emma R. Beasor, Nathan Smith, Jacob E. Jencson   +2 more
doaj   +1 more source

Reconciling the Tension between Light-curve Modeling of Type II Supernovae and Neutrino-driven Core-collapse Supernovae Models with Late-phase Spectroscopy

The Astrophysical Journal
Type II supernovae (SNe II) are the most frequently observed outcome of core-collapse explosions and provide a valuable window into the physical mechanisms governing the deaths of massive stars. However, estimates of explosion properties based on optical
Qiliang Fang, Hiroki Nagakura, Takashi J. Moriya   +2 more
doaj   +1 more source