Results 101 to 110 of about 2,154,904 (218)

The circumstellar matter of supernova 2014J and the core-degenerate scenario [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
Accepted to ...
openaire   +2 more sources

SN 2024dy: Dust Formation in a Long-lived Type IIn Supernova and Constraints on the Dust Mass

The Astrophysical Journal
Type IIn supernovae (SNe) are a subclass of core-collapse SNe powered by interaction between the ejecta and the dense circumstellar material. Among them, long-lived Type IIn events are characterized by luminous, long-duration light curves with high ...
Sota Goto, Masayuki Yamanaka, Koji S. Kawabata, Masaomi Tanaka, Avinash Singh, Devendra K. Sahu, Tatsuya Nakaoka, Anjasha Gangopadhyay, Takahiro Nagayama, Naveen Dukiya, Monalisa Dubey, Kuntal Misra, Bhavya Ailawadhi   +12 more
doaj   +1 more source

SN 2021ukt: A Transitional Supernova with a Short Plateau and Persistent Interaction

The Astrophysical Journal
We present spectroscopic and photometric observations of SN 2021ukt, a peculiar short-plateau object that was originally identified as a Type IIn supernovae (SN) and later underwent an unprecedented transition to a Type Ib (possibly Type IIb) SN.
Neil R. Pichay, Sergiy S. Vasylyev, Audrey M. Liddle, Alexei V. Filippenko, Yi Yang, WeiKang Zheng, Thomas G. Brink, Matthew Graham, Daniel Stern, Daichi Hiramatsu, Claudia P. Gutiérrez, K. Azalee Bostroem, Estefania Padilla Gonzalez, D. Andrew Howell, Curtis McCully, Megan Newsome, Craig Pellegrino, Giacomo Terreran, Ivan Altunin, Raphael Baer-Way, Vidhi Chandler, Asia A. deGraw, Connor F. Jennings, Michael B. May   +23 more
doaj   +1 more source

Observational constraints on circumstellar dust [PDF]

, 1986
There is an enormous range in the properties of stars that are losing mass. The red giants responsible for injecting roughly half or more of the material into the interstellar medium are reviewed. The physical properties are described for the out flowing
Jura, M.
core  

The excitation of circumstellar C

, 2013
Context. Observations of the circumstellar envelopes of post-asymptotic giant branch (post-AGB) stars provide information about their mass-loss history during the AGB phase and about the chemistry inside envelopes after that phase. Aims.
M. Pułecka, M. R. Schmidt, L. Začs, R. Szczerba   +3 more
core   +1 more source

Transients by Black Hole Formation from Red Supergiants: Impact of Dense Circumstellar Matter [PDF]

Failed supernovae (SNe), which are likely the main channel for forming stellar-mass black holes, are predicted to accompany mass ejections much weaker than typical core-collapse SNe.
Piro, Anthony L., Huang, Xiaoshan, Fuller, Jim, Tsuna, Daichi   +3 more
core   +1 more source

SN 2022erq: A Superluminous Thermonuclear Supernova with Escalating Preexplosion Mass Loss

The Astrophysical Journal
We present a photometric and spectroscopic study of the superluminous Type Ia supernova SN 2022erq. Its early spectra, dominated by iron-group elements with weak intermediate-mass features, might indicate highly efficient nuclear burning, broadly similar
Qian Zhai, Jujia Zhang, Xiaofeng Wang, A. Pastorello, Alexei V. Filippenko, József Vinkó, Thomas G. Brink, Yunkun Han, G. Valerin, N. Elias Rosa, Yongzhi Cai, Weili Lin, Yi Yang, WeiKang Zheng, Xiangcun Meng, Chengyuan Wu, Liping Li, Zeyi Zhao, J. Craig Wheeler, Jose L. Prieto, Jialian Liu, Gaici Li, Shengyu Yan, Fangzhou Guo, C. P. Gutiérrez, E. Kankare, Peter Lundqvist, S. Moran, A. Reguitti, I. Salmaso, M. D. Stritzinger, S. Williams, J.-W. Zhao, D.-D Shi, Jianrong Shi, Z.-H. Peng, Tengfei Song, Yongyuan Xiang, Attila Bódi, Borbála Cseh, Ágoston Horti-Dávid, Csilla Kalup, Levente Kriskovics, Réka Könyves-Tóth, András Pál, Bálint Seli, Ádám Sódor, Róbert Szakáts, P. A. Mazzali, T. Kravtsov, K. Matilainen, T. M. Reynolds, L. Galbany, Bo Wang   +53 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Inferring a Dense Confined Circumstellar Medium around Supernova Progenitors via Long-term Hydrodynamical Evolution

The Astrophysical Journal Letters
Circumstellar interaction of supernova (SN) ejecta is an essential process in its evolution, and observations of SNe have found the signature of circumstellar interaction in both the early and late evolutionary phases of SNe. In this Letter, we show that
Tomoki Matsuoka, Keiichi Maeda, Ke-Jung Chen   +2 more
doaj   +1 more source

JWST Imaging of Edge-on Protoplanetary Disks. I. Fully Vertically Mixed 10 μm Grains in the Outer Regions of a 1000 au Disk

The Astronomical Journal
Scattered light imaging of protoplanetary disks provides key insights on the geometry and dust properties in the disk surface. Here, we present James Webb Space Telescope (JWST) 2–21 μ m images of a 1000 au radius edge-on protoplanetary disk surrounding ...
Gaspard Duchêne, François Ménard, Karl R. Stapelfeldt, Marion Villenave, Schuyler G. Wolff, Marshall D. Perrin, Christophe Pinte, Ryo Tazaki, Deborah L. Padgett   +8 more
doaj   +1 more source