Results 1 to 10 of about 45,520 (173)

The Kinematic Bimodality: Efficient Feedback and Cold Gas Deficiency in Slow-rotating Galaxies

The Astrophysical Journal Letters, 2023
The bimodality in the stellar spin of low-redshift (massive) galaxies, ubiquitously existing at all star formation levels and in diverse environments, suggests that galaxies grow and quench through two diverged evolutionary pathways.
Bitao Wang, Yingjie Peng
doaj   +1 more source

Symmetries in Stellar, Galactic, and Extragalactic Astronomy [PDF]

, 2021
Examples are presented for appearance of geometric symmetry in the shape of various astronomical objects and phenomena. Usage of these symmetries in astrophysical and extragalactic research is also discussed.
openaire   +2 more sources

50 YEARS OF RESEARCH IN CONTINUUM AT THE UTR-2 RADIO TELESCOPE [PDF]

Radio Physics and Radio Astronomy, 2021
Purpose: The results of research in continuum decameter-wave radio emission of the Galaxy background, ionized hydrogen regions, supernova remnants, extragalactic discrete sources, extended galaxies, galactic clusters, extragalactic background are given ...
M. A. Sidorchuk, N. M. Vasilenko, O. M. Ulyanov, O. O. Konovalenko, D. V. Mukha, E. A. Abramenkov, K. M. Sidorchuk, A. I. Miasoied   +7 more
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The Supersonic Project: Star Formation in Early Star Clusters without Dark Matter

The Astrophysical Journal Letters, 2023
The formation mechanism of globular clusters (GCs) has long been debated by astronomers. It was recently proposed that supersonically induced gas objects (SIGOs)–which formed in the early Universe due to the supersonic relative motion of baryons and dark
William Lake, Smadar Naoz, Federico Marinacci, Blakesley Burkhart, Mark Vogelsberger, Claire E. Williams, Yeou S. Chiou, Gen Chiaki, Yurina Nakazato, Naoki Yoshida   +9 more
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The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters

The Astrophysical Journal Supplement Series, 2022
The origins of Lyman continuum (LyC) photons responsible for the reionization of the universe are as of yet unknown and highly contested. Detecting LyC photons from the Epoch of Reionization is not possible due to absorption by the intergalactic medium ...
Sophia R. Flury, Anne E. Jaskot, Harry C. Ferguson, Gábor Worseck, Kirill Makan, John Chisholm, Alberto Saldana-Lopez, Daniel Schaerer, Stephan McCandliss, Bingjie Wang, N. M. Ford, Timothy Heckman, Zhiyuan Ji, Mauro Giavalisco, Ricardo Amorin, Hakim Atek, Jeremy Blaizot, Sanchayeeta Borthakur, Cody Carr, Marco Castellano, Stefano Cristiani, Stephane De Barros, Mark Dickinson, Steven L. Finkelstein, Brian Fleming, Fabio Fontanot, Thibault Garel, Andrea Grazian, Matthew Hayes, Alaina Henry, Valentin Mauerhofer, Genoveva Micheva, M. S. Oey, Goran Ostlin, Casey Papovich, Laura Pentericci, Swara Ravindranath, Joakim Rosdahl, Michael Rutkowski, Paola Santini, Claudia Scarlata, Harry Teplitz, Trinh Thuan, Maxime Trebitsch, Eros Vanzella, Anne Verhamme, Xinfeng Xu   +46 more
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Status of the VERITAS Observatory [PDF]

, 2008
VERITAS, an Imaging Atmospheric Cherenkov Telescope (IACT) system for gammma-ray astronomy in the GeV-TeV range, has recently completed its first season of observations with a full array of four telescopes.
A. Cannon, A. Cesarini, A. D. Falcone, A. Furniss, A. Imran, A. Konopelko, A. McCann, A. W. Smith, A. Weinstein, B. Zitzer, C. M. Hui, D. A. Williams, D. B. Kieda, D. Hanna, D. Horan, D. Pandel, D. Steele, E. Aliu, E. Hays, F. Krennrich, Felix A. Aharonian, Frank Rieger, G. Finnegan, G. Gyuk, G. H. Gillanders, G. H. Sembroski, G. Maier, H. J. Rose, H. Krawczynski, J. A. Toner, J. E. Ward, J. Grube, J. H. Buckley, J. Holder, J. Kildea, J. Niemiec, J. P. Finley, J. Quinn, J. S. Perkins, K. L. Byrum, K. Ragan, L. C. Reyes, L. Ciupik, L. F. Fortson, L. Valcarcel, M. Beilicke, M. J. Lang, M. K. Daniel, M. Kertzman, M. McCutcheon, M. Pohl, M. Schroedter, M. Wood, N. Karlsson, O. Celik, P. Cogan, P. Colin, P. Fortin, P. Kaaret, P. Moriarty, P. T. Reynolds, R. A. Ong, R. Guenette, R. J. White, R. Mukherjee, R. Wagner, S. A. Wissel, S. J. Fegan, S. LeBohec, S. M. Bradbury, S. P. Swordy, S. P. Wakely, T. Arlen, T. B. Humensky, T. C. Weekes, T. Ergin, T. Nagai, V. A. Acciari, V. Bugaev, V. V. Vassiliev, W. Benbow, W. Cui, Werner Hofmann, Y. Butt, Y. C. K. Chow   +84 more
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Fixing the Reference Frame for PPMXL Proper Motions Using Extragalactic Sources [PDF]

, 2014
We quantify and correct systematic errors in PPMXL proper motions using extragalactic sources from the first two LAMOST data releases and the Veron-Cetty & Veron Catalog of Quasars.
Beers, Timothy C., Carlin, Jeffrey L., Chen, Li, Deng, Li-Cai, Grabowski, Kathleen, Grillmair, Carl J., Guhathakurta, Puragra, Hou, Jin-Liang, Hou, Yong-Hui, Liu, Chao, Liu, Xiao-Wei, Luo, A-Li, Lépine, Sébastien, Newberg, Heidi Jo, Smith, Martin C., Yanny, Brian, Zhang, Hao-Tong, Zhang, Yong, Zheng, Zheng   +18 more
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TeV GAMMA RAYS: OBSERVATIONS VERSUS EXPECTATIONS & THEORY

Acta Polytechnica, 2013
The scope of this paper is to discuss two important questions relevant for TeV γ-ray astronomy; the pursuit to reveal the origin of cosmic rays in our galaxy, and the opacity of the universe in γ-rays.
Frank Krennrich
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Resolving Galactic-scale Obscuration of X-Ray AGNs at z ≳ 1 with COSMOS-Web

The Astrophysical Journal Letters, 2023
A large fraction of the accreting supermassive black hole population is shrouded by copious amounts of gas and dust, particularly in the distant ( z ≳ 1) universe.
John D. Silverman, Vincenzo Mainieri, Xuheng Ding, Daizhong Liu, Knud Jahnke, Michaela Hirschmann, Jeyhan Kartaltepe, Erini Lambrides, Masafusa Onoue, Benny Trakhtenbrot, Eleni Vardoulaki, Angela Bongiorno, Caitlin Casey, Francesca Civano, Andreas Faisst, Maximilien Franco, Steven Gillman, Ghassem Gozaliasl, Christopher C. Hayward, Anton M. Koekemoer, Vasily Kokorev, Georgios Magdis, Stefano Marchesi, Robert Michael Rich, Martin Sparre, Hyewon Suh, Takumi Tanaka, Francesco Valentino   +27 more
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Probing the extragalactic fast transient sky at minute timescales with DECam [PDF]

, 2019
Searches for optical transients are usually performed with a cadence of days to weeks, optimised for supernova discovery. The optical fast transient sky is still largely unexplored, with only a few surveys to date having placed meaningful constraints on ...
Abbott, Timothy M. C., Andreoni, Igor, Bhandari, Shivani, Caleb, Manisha, Chang, Seo-Won, Cooke, Jeffrey, Cucchiara, Antonino, Farah, Wael, Flynn, Christopher M., Jankowski, Fabian, Keane, Evan F., Lien, Amy, Moriya, Takashi J., Möller, Anais, Onken, Christopher, Parthasarathy, Aditya, Petroff, Emily, Price, Daniel C., Pritchard, Tyler A., Ravasio, Maria Edvige, Rest, Armin, Ryder, Stuart, Vohl, Dany, Webb, Sara, Wolf, Christian   +24 more
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