Results 51 to 60 of about 49,186 (262)

SN 2021dbg: A Luminous Type IIP–IIL Supernova Exploding from a Massive Star with a Layered Shell

The Astrophysical Journal
We present extensive observations and analysis of supernova (SN) SN 2021dbg, utilizing optical photometry and spectroscopy. For approximately 385 days following the explosion, SN 2021dbg exhibited remarkable luminosity, surpassing most Type II SNe (SNe ...
Zeyi Zhao, Jujia Zhang, Liping Li, Qian Zhai, Yongzhi Cai, Shubham Srivastav, Xiaofeng Wang, Han Lin, Yi Yang, Alexei V. Filippenko, Thomas G. Brink, WeiKang Zheng   +11 more
doaj   +1 more source

Nucleosynthesis in Type II supernovae and the abundances in metal-poor stars [PDF]

, 1998
We explore the effects on nucleosynthesis in Type II supernovae of various parameters (mass cut, neutron excess, explosion energy, progenitor mass) in order to explain the observed trends of the iron-peak element abundance ratios ([Cr/Fe], [Mn/Fe], [Co ...
Adam Burrows, Barbuy B., Edvardsson B., Friedrich‐Karl Thielemann, Gratton R. G., Gratton R. G., Gratton R. G., Gratton R. G., Hashimoto M., Hideyuki Umeda, Ken'ichi Nomoto, Magain P., Molaro P., Molaro P., Nissen P. E., Nomoto K., Primas F., Schaller G., Shigeyama T., Takayoshi Nakamura, Tsujimoto T., Zhao G.   +21 more
core   +4 more sources

Establishing Indium in Frustrated Lewis Pair Chemistry: From Synthesis to Catalytic Applications

ChemistryEurope, EarlyView.
Not that hard: The effects of chemical hardness of the soft FLP tBu2InCH2PtBu2 and its pyridine‐adduct tBu2In(py)CH2PtBu2 were examined in adduct formation reactions toward H2, CO2, and CS2. The frustrated Lewis pair shows catalytic activity in the reduction of CO2 with pinacolborane.
Daniel N. Heuer, Jan‐Hendrik Lamm, Hans‐Georg Stammler, Beate Neumann, Andreas Mix, Yury V. Vishnevskiy, Norbert W. Mitzel   +6 more
wiley   +1 more source

Precursors of Supernovae from Mass Eruption: Prospects for Early Warning of Nearby Core-collapse Supernovae

The Astrophysical Journal, 2023
Recent observations of a large fraction of Type II supernovae (SNe) show traces of dense circumstellar medium (CSM) very close to the progenitor star. If this CSM is created by eruptive mass loss several months before core collapse, the eruption itself ...
Daichi Tsuna, Yuki Takei, Toshikazu Shigeyama   +2 more
doaj   +1 more source

Engineering a Stable Solid–Electrolyte Interphase through a Novel Trifluoromethyl‐Free Lithium Salt for Lithium Metal Polymer Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The motivation behind the development of the new lithium salt LiDFFSI is to combine the advantages of both LiFSI and LiDFSI salts. LiDFFSI offers high ionic conductivity and enhanced compatibility with aluminum current collectors. Additionally, it promotes the formation of a conductive SEI layer rich in LiF and LiH, which contributes to an extended ...
Lorena García, David Fraile‐Insagurbe, Izaskun Serna, Itziar Aldalur, Leire Meabe, Mikel Arrese‐Igor, Rosalía Cid, Julen Etxabe, Michel Armand, Maria Martinez‐Ibañez   +9 more
wiley   +1 more source

Long Plateau Doth So: How Internal Heating Sources Affect Hydrogen-rich Supernova Light Curves

The Astrophysical Journal
Some hydrogen-rich core-collapse supernovae (SNeIIP) exhibit evidence of a sustained energy source powering their light curves, resulting in a brighter and/or longer-lasting hydrogen recombination plateau phase.
Tatsuya Matsumoto, Brian D. Metzger, Jared A. Goldberg   +2 more
doaj   +1 more source

Intermediate Element Abundances in Galaxy Clusters

, 2003
We present the average abundances of the intermediate elements obtained by performing a stacked analysis of all the galaxy clusters in the archive of the X-ray telescope ASCA.
Arnaud M., Cappellaro E., D. J. Horner, Fukazawa Y., Gibson B. K., Grevesse N., Grevesse N., Guainazzi M., Ishimaru Y., M. Loewenstein, Matsumoto H., Mitchell R. J., Peimbert M., R. F. Mushotzky, Tanaka Y., W. H. Baumgartner   +15 more
core   +1 more source

A comparative study of Type II-P and II-L supernova rise times as exemplified by the case of LSQ13cuw [PDF]

, 2015
We report on our findings based on the analysis of observations of the Type II-L supernova LSQ13cuw within the framework of currently accepted physical predictions of core-collapse supernova explosions.
Anderson, J. P., Baltay, C., Benetti, S., Feindt, U., Fraser, M., Gall, E. E. E., González-Gaitán, S., Inserra, C., Jerkstrand, A., Kotak, R., Leibundgut, B., Maguire, K., McKinnon, R., Polshaw, J., Rabinowitz, D., Smartt, S. J., Sollerman, J., Sullivan, M., Valenti, S., Young, D.   +19 more
core   +5 more sources

Stabilizing Anion–Anion Aggregates via Dihydrogen Bonds in Non‐Classical Inorganic Molecules

Aggregate, Volume 7, Issue 1, January 2026.
Despite Coulomb's law, the anionic [o‐FESAN]− cluster forms stable anti‐electrostatic aggregates via short dihydrogen bonds. Experimental (nuclear magnetic resonance, dynamic light scattering, and X‐ray diffraction) and theoretical (density functional theory) studies reveal that C–H···H–B interactions overcome long‐range repulsion, enabling cluster ...
Adnana Zaulet, Miquel Nuez‐Martinez, Pipsa Hirva, Reijo Sillanpää, Francesc Teixidor, Clara Viñas   +5 more
wiley   +1 more source

SN 2019tua: A Type IIb Supernova with Multiple Bumps in the Light Curves

The Astrophysical Journal
We present photometric and spectroscopic observations and analysis of the Type IIb supernova (SN) SN 2019tua, which exhibits multiple bumps in its declining light curves between 40 and 65 days after discovery.
Xin-Bo Huang, Xiang-Gao Wang, Long Li, Li-Ping Xin, Jing Wang, Tian-Ci Zheng, Qi Wang, Hui-Ya Liu, Zi-Min Zhou, Xiao-Meng Lu, Jian-Yan Wei, En-Wei Liang   +11 more
doaj   +1 more source