Results 51 to 60 of about 48,593 (219)

TYPE II-P SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY AND THE STANDARDIZED CANDLE METHOD [PDF]

The Astrophysical Journal, 2009
Accepted for publication by ApJ; data used in this paper can be downloaded from http://sdssdp47.fnal.gov/sdsssn/photometry/SNIIp.tgz; citation errors ...
D’andrea, Chris B., Sako, Masao, Dilday, Benjamin, Frieman, Joshua A., Holtzman, Jon A., Kessler, Richard, Konishi, Kohki, Schneider, Donald P., Sollerman, Jesper, Wheeler, J. Craig, Yasuda, Naoki, Cinabro, David, Jha, Saurabh W., Nichol, Robert C., Lampeitl, Hubert, Smith, Mathew, Atlee, David W., Bassett, Bruce A., Castander, Francisco Javier, Goobar, Ariel, Miquel, Ramon, Nordin, Jakob, Ostman, Linda, Prieto, Jose Luis, Quimby, Robert, Riess, Adam G., Stritzinger, Maximilian D.   +26 more
openaire   +7 more sources

A Central Excess of Stripped-Envelope Supernovae within Disturbed Galaxies

, 2012
This paper presents an analysis of core-collapse supernova distributions in isolated and interacting host galaxies, paying close attention to the selection effects involved in conducting host galaxy supernova studies.
Alonso-Herrero, Anderson, Anderson, Anderson, Anderson, Anderson, Arcavi, Armus, Barnes, Barnes, Bartunov, Bartunov, Boissier, Cappellaro, Caputi, Conselice, Crowther, Dessart, Djorgovski, Ekström, Eldridge, Eldridge, Eldridge, Elias-Rosa, Elmegreen, Evans, Filippenko, Filippenko, Franceschini, Gal-Yam, Georgy, Habergham, Hakobyan, Heger, Henry, Hibbard, Iwasawa, J. P. Anderson, James, Joseph, Joseph, Kaiser, Keel, Kennicutt, Kennicutt, Kewley, Kewley, Kiewe, Klessen, Kruijssen, Kudritzki, Larson, Law, Leloudas, Lennarz, Li, Li, Li, Lotz, Maund, Maund, Maíz-Apellániz, Meurer, Meynet, Meynet, Meynet, Mihos, Mihos, Milone, Minkowski, Miralles-Caballero, Modjaz, Mokiem, Muller, Neff, P. A. James, Pastorello, Perets, Petrosian, Pettini, Podsiadlowski, Puls, Pèrez-Torres, Rampazzo, Rau, Rupke, S. M. Habergham, Sanders, Schmidt, Shaw, Smartt, Smartt, Smith, Sollima, Sollima, Sollima, Thöne, Tsvetkov, van den Bergh, van den Bergh, Van Dyk, Van Dyk, Van Dyk, Veilleux, Yoon, Zamojski   +105 more
core   +1 more source

SN 2023ixf in the Pinwheel Galaxy M101: From Shock Breakout to the Nebular Phase

The Astrophysical Journal
We present photometric and spectroscopic observations of supernova SN 2023ixf covering from day 1 to 442 days after explosion. SN 2023ixf reached a peak V -band absolute magnitude of −18.2 ± 0.07, and light curves show that it has a relatively short ...
WeiKang Zheng, Luc Dessart, Alexei V. Filippenko, Yi Yang, Thomas G. Brink, Thomas de Jaeger, Sergiy S. Vasylyev, Schuyler D. Van Dyk, Kishore C. Patra, Wynn V. Jacobson-Galán, Gabrielle E. Stewart, Efrain Alvarado III, Veda Arikatla, Pallas Beddow, Andreas Betz, Emma Born, Kate Bostow, Adam J. Burgasser, Osmin Caceres, Evan M. Carrasco, Elma Chuang, Asia DeGraw, Elinor L. Gates, Eli Gendreau-Distler, Cooper Jacobus, Connor Jennings, Preethi R. Karpoor, Paul Lynam, Ann Mina, Katherine Mora, Neil Pichay, Jyotsna Ravi, Jon Rees, R. Michael Rich, Sophia Risin, Nathan R. Sandford, Alessandro Savino, Emma Softich, Christopher A. Theissen, Edgar P. Vidal, William Wu, Yoomee Zeng   +41 more
doaj   +1 more source

Lambda-Cold Dark Matter, Stellar Feedback, and the Galactic Halo Abundance Pattern [PDF]

, 2005
(Abridged) The hierarchical formation scenario for the stellar halo requires the accretion and disruption of dwarf galaxies, yet low-metallicity halo stars are enriched in alpha-elements compared to similar, low-metallicity stars in dwarf spheroidal ...
Andreea S. Font, Bondi H., Brant Robertson, Devriendt J. E. G., Gratton R. G., Gratton R. G., Gratton R. G., Greggio L., Hill V., Hill V., Hill V., Hill V., James S. Bullock, Jasniewicz G., Kathryn V. Johnston, Lacey C., Lars Hernquist, Matteucci F., Matteucci F., Matteucci F., Moore B., Nissen P. E., Pagel B. E. J., Schaller G., Tinsley B. M., Tinsley B. M., Tsujimoto T., Unavane M.   +27 more
core   +2 more sources

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

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

The Prevalence and Influence of Circumstellar Material around Hydrogen-rich Supernova Progenitors

The Astrophysical Journal, 2023
Narrow transient emission lines (flash-ionization features) in early supernova (SN) spectra trace the presence of circumstellar material (CSM) around the massive progenitor stars of core-collapse SNe.
Rachel J. Bruch, Avishay Gal-Yam, Ofer Yaron, Ping Chen, Nora L. Strotjohann, Ido Irani, Erez Zimmerman, Steve Schulze, Yi Yang, Young-Lo Kim, Mattia Bulla, Jesper Sollerman, Mickael Rigault, Eran Ofek, Maayane Soumagnac, Frank J. Masci, Christoffer Fremling, Daniel Perley, Jakob Nordin, S. Bradley Cenko, Anna Y. Q. Ho, S. Adams, Igor Adreoni, Eric C. Bellm, Nadia Blagorodnova, Kevin Burdge, Kishalay De, Richard G. Dekany, Suhail Dhawan, Andrew J. Drake, Dmitry A. Duev, Matthew Graham, Melissa L. Graham, Jacob Jencson, Emir Karamehmetoglu, Mansi M. Kasliwal, Shrinivas Kulkarni, A. A. Miller, James D. Neill, Thomas A. Prince, Reed Riddle, Benjamin Rusholme, Y. Sharma, Roger Smith, Niharika Sravan, Kirsty Taggart, Richard Walters, Lin Yan   +47 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, EarlyView.
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

Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S

, 2008
We study a possibility of detection of circumstellar absorption lines of Na I D$_{1,2}$ and Ca II H,K in spectra of type IIP supernovae at the photospheric epoch.
A. Fassia, A. Fassia, A. Heger, A. Heger, C. Fransson, C. Fransson, C. J. Skinner, C. S. J. Pun, D. C. Leonard, D. C. Leonard, D. Pooley, D. V. Bowen, E. K. Grasberg, F. Patat, F. Patat, H. Nieuwenhuijsen, J. Rho, N. N. Chugai, N. N. Chugai, N. N. Chugai, P. J. Huggins, P. Lundqvist, Q.-Z. Liu, R. A. Chevalier, R. A. Chevalier, S. A. Rinehart, S. Immler, V. P. Utrobin, V. P. Utrobin, Y. Rephaeli   +29 more
core   +1 more source

Conversion Between 2‐ and 3‐Dimensional Halogen‐Bonded Networks Formed From a Single N‐Oxide/Iodoalkyne Building Block

Chemistry – A European Journal, EarlyView.
Open halogen‐bonded networks have been prepared from building blocks that incorporate both iodoalkyne halogen bond donors and a pyridine‐N‐oxide halogen bond acceptor. An initially‐formed 3D network containing dioxane in its channels undergoes an unprecedented transition to a 2D material when crystals are exposed to diethyl ether.
Jordan N. Smith, Courtney Ennis, Huan V. Doan, Valeska P. Ting, Nicholas G. White   +4 more
wiley   +1 more source