Results 61 to 70 of about 1,488 (191)

Multi-messenger aspects of cosmic neutrinos*

EPJ Web of Conferences, 2016
The recent observation of TeV-PeV neutrinos by IceCube has opened a new window to the high-energy Universe. I will discuss this signal in the context of multi-messenger astronomy.
Ahlers Markus
doaj   +1 more source

ASTR 403: Galactic and Extragalactic Astronomy

, 2011
Syllabus for ASTR 403 Galactic and Extragalactic Astronomy for Fall 2011 ...
Schmidt, Edward
core  

JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundamental astrophysical WD properties and to search for evidence in their colors for (or against ...
L. R. Bedin, D. Nardiello, M. Salaris, M. Libralato, P. Bergeron, A. J. Burgasser, D. Apai, M. Griggio, M. Scalco, J. Anderson, R. Gerasimov, A. Bellini   +11 more
wiley   +1 more source

High-quality Extragalactic Legacy-field Monitoring (HELM) with DECam: Project Overview and First Data Release

The Astrophysical Journal Supplement Series
High-quality Extragalactic Legacy-field Monitoring (HELM) is a long-term observing program that photometrically monitors several well-studied extragalactic legacy fields with the Dark Energy Camera (DECam) imager on the CTIO 4 m Blanco telescope.
Ming-Yang Zhuang, Qian Yang, Yue Shen, Monika Adamów, Douglas N. Friedel, R. A. Gruendl, Zachary Stone, Junyao Li, Xin Liu, Paul Martini, Timothy M. C. Abbott, Scott F. Anderson, Roberto J. Assef, Franz E. Bauer, Richard Bielby, W. N. Brandt, Colin J. Burke, Jorge Casares, Yu-Ching Chen, Gisella De Rosa, Alex Drlica-Wagner, Tom Dwelly, Alice Eltvedt, Gloria Fonseca Alvarez, Jianyang Fu, Cesar Fuentes, Melissa L. Graham, Catherine J. Grier, Nathan Golovich, Patrick B. Hall, Patrick Hartigan, Keith Horne, Anton M. Koekemoer, Mirko Krumpe, Jennifer I. Li, Chris Lidman, Umang Malik, Amelia Mangian, Andrea Merloni, Claudio Ricci, Mara Salvato, Rob Sharp, David E. Trilling, Brad E. Tucker, Di Wen, Zachary Wideman, Yongquan Xue, Zhefu Yu, Catherine Zucker   +48 more
doaj   +1 more source

Active Galactic Nuclei: Jets as the Source of Hadrons and Neutrinos

Acta Polytechnica CTU Proceedings, 2014
Active galactic nuclei are extragalactic sources, and their relativistic hot-plasma jets are believed to be the main candidates of the cosmic-ray origin, above the so-called knee region of the cosmic-ray spectrum.
Athina Meli, Paolo Ciarcelluti
doaj   +1 more source

Foreground Galactic stars properties

, 2013
VizieR online Data Catalogue associated with article published in journal Astronomy & Astrophysics with title 'Through thick and thin: Structure of the Galactic thick disc from extragalactic surveys.' (bibcode: 2013A&A...555A ...
Johns Hopkins University, INAF - Osservatorio di Astrofisica e Scienza Dello Spazio di Bologna, Battaglia, G., Laboratoire Lagrange, UMR 7293, Université de Nice Sophia Antipolis, Wyse, R. F. G., De Laverny, P., Recio-Blanco, A., University of Victoria, Kordopatis, G., Gilmore, G., INAF Osservatorio Astronomico di Bologna, Irwin, M., Starkenburg, E., Tolstoy, Eline, Hill, V., Astronomy, University of Cambridge   +16 more
core   +1 more source

Gaia23ckh: Symbiotic outburst of the assumed Mira variable V390 Sco

Astronomische Nachrichten, Volume 345, Issue 5, June 2024.
Abstract The poorly studied variable star V390 Sco, previously classified as a Mira pulsator, was detected in a brightening event by the ESA Gaia satellite in September 2023. This work presents an analysis of available archival multifrequency photometric data of this target, along with our spectroscopic observations. Our findings lead to the conclusion
Jaroslav Merc, Peter Velez, Stéphane Charbonnel, Olivier Garde, Pascal Le Dû, Lionel Mulato, Thomas Petit, Jan Skowron   +7 more
wiley   +1 more source

HyperLeda: Virtual Instruments for Extragalactic Astronomy

, 2002
International audienceHyperLeda offers a series of tools of interest for Galactic and extra-galactic astronomy. The most prominent service is the LEDA catalogue which presents 70 homogenized parameters collected for over 3 million ...
Paturel, Georges, Chilingarian, Igor V., Georgiev, Vladimir, Prugniel, Philippe, Petit, Chantal   +4 more
core   +1 more source

Lessons from the apparent peculiar nature of the star TYC 6544‐3483‐1

Astronomische Nachrichten, Volume 345, Issue 4, May 2024.
Abstract We report a radio and optical study of the star TYC 6544‐3483‐1 originally selected as a follow‐up target in the course of our efforts to cross‐identify Galactic high‐energy sources. The star by itself finally turned out to be a very ordinary main‐sequence star despite the initial expectations that apparently pointed to the contrary.
Josep Martí, Pedro L. Luque‐Escamilla, Benito Marcote, Daniel del Ser, Gustavo E. Romero, Cintia S. Peri   +5 more
wiley   +1 more source

Virgo Filaments. IV. Using WISE to Measure the Modification of Star-forming Disks in the Extended Regions Around the Virgo Cluster

The Astrophysical Journal
Recent theoretical work and targeted observational studies suggest that filaments are sites of galaxy preprocessing. The aim of the WISESize project is to directly probe galaxies over the full range of environments to quantify and characterize extrinsic ...
Kim Conger, Gregory Rudnick, Rose A. Finn, Gianluca Castignani, John Moustakas, Benedetta Vulcani, Daria Zakharova, Lizhi Xie, Francoise Combes, Pascale Jablonka, Yannick Bahé, Gabriella De Lucia, Vandana Desai, Rebecca A. Koopmann, Dara Norman, Melinda Townsend, Dennis Zaritsky   +16 more
doaj   +1 more source