Results 71 to 80 of about 695 (169)

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
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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
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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
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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
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The Type II SN 2025pht in NGC 1637: A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a Supernova Progenitor Star

The Astrophysical Journal Letters
We present follow-up imaging and spectroscopy and pre-explosion imaging of SN 2025pht located in NGC 1637 at 12 Mpc. Our spectroscopy shows that SN 2025pht is a Type II supernova (SN) with broad lines of hydrogen and with minimal line-of-sight extinction
Charles D. Kilpatrick, Aswin Suresh, Kyle W. Davis, Maria R. Drout, Ryan J. Foley, Alexander Gagliano, Wynn V. Jacobson-Galán, Ravjit Kaur, Kirsty Taggart, Jason Vazquez   +9 more
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JWST Observations of SN 2023ixf. I. Completing the Early Multiwavelength Picture with Plateau-phase Spectroscopy

The Astrophysical Journal
We present and analyze panchromatic (0.35–14 μ m) spectroscopy of the Type II supernova 2023ixf, including near- and mid-infrared spectra obtained 33.6 days after explosion during the plateau phase, with the James Webb Space Telescope (JWST). This is the
J. M. DerKacy, C. Ashall, E. Baron, K. Medler, T. Mera, P. Hoeflich, M. Shahbandeh, C. R. Burns, M. D. Stritzinger, M. A. Tucker, B. J. Shappee, K. Auchettl, C. R. Angus, D. D. Desai, A. Do, J. T. Hinkle, W. B. Hoogendam, M. E. Huber, A. V. Payne, D. O. Jones, J. Shi, M. Y. Kong, S. Romagnoli, A. Syncatto, S. Moran, E. Fereidouni, P. J. Brown, M. Engesser, O. D. Fox, L. Galbany, E. Y. Hsiao, T. de Jaeger, S. Kumar, J. Lu, M. Matsuura, P. A. Mazzali, N. Morrell, C. M. Pfeffer, M. M. Phillips, A. Rest, S. Shiber, L. Strolger, N. B. Suntzeff, T. Temim, S. Tinyanont, Q. Wang, R. Wesson, S. H. Park, J. Rho   +48 more
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NEOWISE-R Caught the Luminous SN 2023ixf in Messier 101

The Astrophysical Journal
During routine survey imaging, the reactivated Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE-R) serendipitously caught the Type II supernova SN 2023ixf in Messier 101 on the rise, starting day 3.6 through day 10.9, and again on the ...
Schuyler D. Van Dyk, Tamás Szalai, Roc M. Cutri, J. Davy Kirkpatrick, Carl J. Grillmair, Sergio B. Fajardo-Acosta, Joseph R. Masiero, Amy K. Mainzer, Christopher R. Gelino, József Vinkó, András Péter Joó, András Pál, Réka Könyves-Tóth, Levente Kriskovics, Róbert Szakáts, Krisztián Vida, WeiKang Zheng, Thomas G. Brink, Alexei V. Filippenko   +18 more
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Late formation of silicon carbide in type II supernovae. [PDF]

Sci Adv, 2018
Liu N, Nittler LR, Alexander CMO, Wang J.   +3 more
europepmc   +1 more source

Discovery of a Likely Type II Supernova at z = 3.6 with JWST

The Astrophysical Journal
Transient astronomy of the early, high-redshift ( z  > 3) Universe is an unexplored regime that offers the possibility of probing the first stars and the epoch of reionization.
D. A. Coulter, J. D. R. Pierel, C. DeCoursey, T. J. Moriya, M. R. Siebert, B. A. Joshi, M. Engesser, A. Rest, E. Egami, M. Shahbandeh, W. Chen, O. D. Fox, L. G. Strolger, Y. Zenati, A. J. Bunker, P. A. Cargile, M. Curti, D. J. Eisenstein, S. Gezari, S. Gomez, M. Guolo, K. Hainline, J. Jencson, B. D. Johnson, M. Karmen, R. Maiolino, R. M. Quimby, P. Rinaldi, B. Robertson, S. Tacchella, F. Sun, Q. Wang, T. Wevers   +32 more
doaj   +1 more source