Results 91 to 100 of about 2,618 (181)

Easily Accessible and Up‐Scalable Aliphatic Bis‐Formamides with Afterglow Luminescence: Photoluminescence Properties and Applications

Small, Volume 22, Issue 42, 27 July 2026.
A bis formamide molecule was found to feature afterglow properties, in both crystalline powder state and in polyvinyl alcohol films. This was attributed to the intermolecular packing that allows H‐trapped emitting state and/or clustering‐triggered emission, which was intensified upon insertion of tetramethylbenzidine as a doping agent.
Chengyi Zhu, Sara Ferrara, Anna Zieleniewska, Daniel Van Opdenbosch, Rubén D. Costa, Youssef Atoini, Jean‐Marie Lehn   +6 more
wiley   +1 more source

THE EFFECT OF HOST GALAXIES ON TYPE Ia SUPERNOVAE IN THE SDSS-II SUPERNOVA SURVEY [PDF]

The Astrophysical Journal, 2010
17 pages, 7 figures, accepted for publication in ApJ Table 2 detailing host galaxy properties ...
Lampeitl, Hubert, /Portsmouth U., ICG, Smith, Mathew, /Cape Town U. /Portsmouth U., ICG, Nichol, Robert C., Bassett, Bruce, U., /South African Astron. Observ. /Cape Town, Cinabro, David, U., /Wayne State, Dilday, Benjamin, /Rutgers U., Piscataway, Foley, Ryan J., Astrophys., /Harvard-Smithsonian Ctr., Frieman, Joshua A., /Fermilab, /Chicago U., Garnavich, Peter M., U., /Notre Dame, Goobar, Ariel, /Stockholm U., OKC, Im, Myungshin, /Seoul Natl. U. /Rutgers U., Piscataway   +23 more
openaire   +4 more sources

Type II supernovae as probes of environment metallicity: observations of host He II regions [PDF]

, 2016
Context. Spectral modelling of type II supernova atmospheres indicates a clear dependence of metal line strengths on progenitor metallicity. This dependence motivates further work to evaluate the accuracy with which these supernovae can be used as ...
L. Galbany, Dessart, L., de Jaeger, T., Kuncarayakti, H., L. Dessart, Galbany, Lluis, Gutiérrez, Claudia P., Galbany, L., Hamuy Wackenhut, Mario, J. L. Prieto, Morrell, N. I., Stritzinger, M. D., Morrell, Nidia Irene, Folatelli, Gastón, Prieto, J. L., M. Hamuy, J. P. Anderson, Anderson, J. P., Hamuy, Mario, Stritzinger, Maximilian D., T. de Jaeger, Kuncarayakti, Hanindyo, M. M. Phillips, Boffin, H. M. J., C. P. Gutiérrez, Hamuy, M., Gutiérrez, C. P., Jaeger, T. de, M. D. Stritzinger, De Jaeger, Thomas, G. Folatelli, Phillips, M. M., H. Kuncarayakti, N. I. Morrell, H. M. J. Boffin   +34 more
core   +1 more source

Discovery and Extensive Follow-up of SN 2024ggi, a Nearby Type IIP Supernova in NGC 3621

The Astrophysical Journal
We present the discovery and early observations of the nearby Type II supernova (SN) 2024ggi in NGC 3621 at 6.64 ± 0.3 Mpc. The SN was caught $5.{8}_{-2.9}^{+1.9}$ hr after its explosion by the ATLAS survey.
Ting-Wan Chen, Sheng Yang, Shubham Srivastav, Takashi J. Moriya, Stephen J. Smartt, Sofia Rest, Armin Rest, Hsing Wen Lin, Hao-Yu Miao, Yu-Chi Cheng, Amar Aryan, Chia-Yu Cheng, Morgan Fraser, Li-Ching Huang, Meng-Han Lee, Cheng-Han Lai, Yu-Hsuan Liu, Aiswarya Sankar.K, Ken W. Smith, Heloise F. Stevance, Ze-Ning Wang, Joseph P. Anderson, Charlotte R. Angus, Thomas de Boer, Kenneth Chambers, Hao-Yuan Duan, Nicolas Erasmus, Michael Fulton, Hua Gao, Joanna Herman, Wei-Jie Hou, Hsiang-Yao Hsiao, Mark E. Huber, Chien-Cheng Lin, Hung-Chin Lin, Eugene A. Magnier, Ka Kit Man, Thomas Moore, Chow-Choong Ngeow, Matt Nicholl, Po-Sheng Ou, Giuliano Pignata, Yu-Chien Shiau, Julian Silvester Sommer, John L. Tonry, Xiao-Feng Wang, Richard Wainscoat, David R. Young, You-Ting Yeh, Jujia Zhang   +49 more
doaj   +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

An Account of Luck, Fortune, and Fate

Philosophy and Phenomenological Research, Volume 113, Issue 1, Page 16-28, July 2026.
ABSTRACT Luck is one of our most important concepts. In this article, I first argue that extant accounts of luck are deeply flawed. I then argue for a hybrid account of luck that is based around the difference between skill‐based and non‐skill‐based events.
Jesse Hill
wiley   +1 more source

The hydrodynamics of Type II supernovae

The Astrophysical Journal, 1976
Observations of Type II supernovae indicate the presence of a moderately cool expanding photosphere. This situation can result from an explosion in a star with an extended envelope. The evolutionary phases of an explosion are described. Information on the propagation of the shock wave through the star can be obtained from ..gamma..=4/3 blast wave ...
openaire   +1 more source

Erratum: "Type II supernovae as probes of environment metallicity: Observations of host H II regions" [PDF]

, 2019
Este documento es una errata de "Type II supernovae as probes of environment metallicity: observations of host He II regionsl" (ver documento relacionado).Instituto de Astrofísica de La ...
Dessart, L., Prieto, J.L., De Jaeger, T., Phillips, M.M., Kuncarayakti, H., Stritzinger, M.D., Hamuy, M., Galbany, L., Gutiérrez, C.P., Morrell, Nidia Irene, Anderson, J.P., Folatelli, Gastón, Boffin, H.M.J.   +12 more
core  

Optical and Near-infrared Nebular-phase Spectroscopy of SN 2024ggi: Constraints on the Structure of the Inner Ejecta, Progenitor Mass, and Dust

The Astrophysical Journal
We present optical and near-infrared (NIR) spectroscopic observations of the nearby Type II supernova SN 2024ggi ranging from 250 to 581 days after the explosion.
Emilio Hueichapán, Régis Cartier, Jose L. Prieto, Carlos Contreras, Aleksandar Cikota, Thallis Pessi, Franz E. Bauer, Giuliano Pignata, Camila Cardenas, Sethulakshmi Vazhayil   +9 more
doaj   +1 more source

Ladder‐Like Structural Architecture of Layered Magnetic A2.4 Cr8Te14 (A = Rb, Cs) Compounds by Self‐Flux Synthesis

Chemistry – A European Journal, Volume 32, Issue 24, 23 June 2026.
A2.4Cr8Te14$A_{2.4}{\rm Cr}_{8}{\rm Te}_{14}$ (A = Rb, Cs) compounds exhibit a layered, ladder‐like Cr‐Te framework uniting structural motives of hollandite‐like and delafossite‐like phases. Alkali atoms are situated both in the interlayer space and tunnels within the Cr8Te14${\rm Cr}_{8}{\rm Te}_{14}$ framework.
Kai D. Röseler, Felix Eder, Fabian O. von Rohr   +2 more
wiley   +1 more source