Results 81 to 90 of about 53,848 (207)

Multi-wavelength extragalactic astronomy at Ghent University

Bulletin de la Société Royale des Sciences de Liège, 2019
Galaxies are generally considered as the basic building blocks of the Universe. Besides stars, galaxies also contain a supermassive black hole, a dark matter halo, and a multi-phase interstellar medium that consists of molecules, atoms, ions, and dust grains.
Baes, Maarten, Camps, Peter, De Looze, Ilse, Viaene, Sébastien   +3 more
openaire   +2 more sources

Radial Profiles of Σ*, ΣSFR, Gas Metallicity, and Their Correlations across the Galactic Mass–Size Plane

The Astrophysical Journal
We analyzed the global and resolved properties of approximately 1240 nearby star-forming galaxies from the MaNGA survey, comparing compact and extended galaxies—those with smaller and larger radii ( R _e ), respectively—at a fixed stellar mass ( M _ ...
Lin Lin, Shiyin Shen, Hassen M. Yesuf, Ye-Wei Mao, Lei Hao   +4 more
doaj   +1 more source

Outlook for ultraviolet astronomy [PDF]

A brief overview of galactic and extragalactic research is given with emphasis on the problems of temperature determination, chemical abundance determination, and the question about the energy sources for the high temperature regions.
Boehm-Vitense, E.
core   +1 more source

New Synoptic Observations of the Cosmic Optical Background with New Horizons

The Astrophysical Journal
We obtained New Horizons LORRI images to measure the cosmic optical background (COB) intensity integrated over 0.4 μ m ≲ λ ≲ 0.9 μ m. The survey comprises 16 high-Galactic-latitude fields selected to minimize scattered diffuse Galactic light (DGL) from ...
Marc Postman, Tod R. Lauer, Joel W. Parker, John R. Spencer, Harold A. Weaver, J. Michael Shull, S. Alan Stern, Pontus Brandt, Steven J. Conard, G. Randall Gladstone, Carey M. Lisse, Simon B. Porter, Kelsi N. Singer, Anne. J. Verbiscer   +13 more
doaj   +1 more source

Gamma ray astronomy from satellites and balloons [PDF]

A survey is given of gamma ray astronomy topics presented at the Cosmic Ray Conference. The major conclusions at the Cosmic Ray Conference in the field of gamma ray astronomy are given. (1) MeV-emission of gamma-ray bursts is a common feature. Variations
Schoenfelder, V.
core   +1 more source

EPOCHS. I. The Discovery and Star-forming Properties of Galaxies in the Epoch of Reionization at 6.5 < z < 18 with PEARLS and Public JWST Data

The Astrophysical Journal
We present in this paper the discovery, properties, and a catalog of 1165 high-redshift 6.5  12 in our sample and describe their properties. Finally, we note a significant observed excess of galaxies compared to models at z  > 12, revealing a tension ...
Christopher J. Conselice, Nathan Adams, Thomas Harvey, Duncan Austin, Leonardo Ferreira, Katherine Ormerod, Qiao Duan, James Trussler, Qiong Li, Ignas Juodžbalis, Lewi Westcott, Honor Harris, Louise T. C. Seeyave, Asa F. L. Bluck, Rogier A. Windhorst, Rachana Bhatawdekar, Dan Coe, Seth H. Cohen, Cheng Cheng, Simon P. Driver, Brenda Frye, Lukas J. Furtak, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Rolf A. Jansen, Anton M. Koekemoer, Madeline A. Marshall, Mario Nonino, Aaron Robotham, Jake Summers, Stephen M. Wilkins, Christopher N. A. Willmer, Haojing Yan, Adi Zitrin   +34 more
doaj   +1 more source

The joint NASA/Goddard-University of Maryland research program in charged particle and high energy photon detector technology [PDF]

Progress made in the following areas is discussed: low energy ion and electron experiments; instrument design for current experiments; magnetospheric measurement of particles; ion measurement in the earth plasma sheet; abundance measurement; X-ray data ...

core   +1 more source

The JADES Origins Field: A New JWST Deep Field in the JADES Second NIRCam Data Release

The Astrophysical Journal Supplement Series
We summarize the properties and initial data release of the JADES Origins Field (JOF), the longest single pointing yet imaged with the James Webb Space Telescope (JWST).
Daniel J. Eisenstein, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Kevin Hainline, Peter Jakobsen, Roberto Maiolino, Nina Bonaventura, Andrew J. Bunker, Alex J. Cameron, Phillip A. Cargile, Emma Curtis-Lake, Ryan Hausen, Dávid Puskás, Marcia Rieke, Fengwu Sun, Christopher N. A. Willmer, Chris Willott, Stacey Alberts, Santiago Arribas, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Stefano Carniani, Stephane Charlot, Zuyi Chen, Jacopo Chevallard, Mirko Curti, Christa DeCoursey, Francesco D’Eugenio, Anna de Graaff, Eiichi Egami, Jakob M. Helton, Zhiyuan Ji, Gareth C. Jones, Nimisha Kumari, Nora Lützgendorf, Isaac Laseter, Tobias J. Looser, Jianwei Lyu, Michael V. Maseda, Erica Nelson, Eleonora Parlanti, Bernard J. Rauscher, Tim Rawle, George Rieke, Hans-Walter Rix, Wiphu Rujopakarn, Lester Sandles, Aayush Saxena, Jan Scholtz, Katherine Sharpe, Irene Shivaei, Charlotte Simmonds, Renske Smit, Michael W. Topping, Hannah Übler, Giacomo Venturi, Christina C. Williams, Joris Witstok, Charity Woodrum   +60 more
doaj   +1 more source

Open Questions in Cosmic-Ray Research at Ultrahigh Energies

Frontiers in Astronomy and Space Sciences, 2019
We review open questions and prospects for progress in ultrahigh-energy cosmic ray (UHECR) research, based on a series of discussions that took place during the “The High-Energy Universe: Gamma-Ray, Neutrino, and Cosmic-ray Astronomy” MIAPP workshop in ...
Rafael Alves Batista, Jonathan Biteau, Mauricio Bustamante, Klaus Dolag, Klaus Dolag, Ralph Engel, Ke Fang, Karl-Heinz Kampert, Dmitriy Kostunin, Miguel Mostafa, Kohta Murase, Kohta Murase, Foteini Oikonomou, Angela V. Olinto, Mikhail I. Panasyuk, Guenter Sigl, Andrew M. Taylor, Michael Unger   +17 more
doaj   +1 more source

Hypercat : A Database for extragalactic astronomy

, 1999
The Hypercat Database is developed at Observatoire de Lyon and is distributed on the WEB through different mirrors in Europe. The goal of Hypercat is to gather data necessary for studying the evolution of galaxies (dynamics and stellar contains) and particularly for providing a z=0 reference for these studies.
Prugniel, Ph., Maubon, G.
openaire   +2 more sources