Results 31 to 40 of about 53,924 (236)

Extragalactic Astronomy and Cosmology

, 2015
Petra Schneider
openaire   +3 more sources

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
core   +2 more sources

Recent Advances in Far-Extragalactic Radio Astronomy [PDF]

Publications of the Astronomical Society of the Pacific, 1976
H. van der Laan
openaire   +2 more sources

The Road to Quasars [PDF]

, 2014
Although the extragalactic nature of 3C 48 and other quasi stellar radio sources was discussed as early as 1960 by John Bolton and others, it was rejected largely because of preconceived ideas about what appeared to be unrealistically high radio and ...
Kellermann, K. I.
core   +1 more source

Parsec-scale structure in the warm ISM from polarized galactic radio background observations [PDF]

, 2001
We present multi-frequency polarization observations of the diffuse radio synchrotron background modulated by Faraday rotation, in two directions of positive latitude.
de Bruyn, A. G., Haverkorn, M., Katgert, P.   +2 more
core   +3 more sources

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
doaj   +1 more source

Opacity in compact extragalactic radio sources and its effect on radio-optical reference frame alignment [PDF]

, 2007
Accurate alignment of the radio and optical celestial reference frames requires detailed understanding of physical factors that may cause offsets between the positions of the same object measured in different spectral bands.
A. B. Pushkarev, A. P. Lobanov, Böttcher, J. A. Zensus, Kadler, Lara, Lestrade, Lobanov, Y. Y. Kovalev   +8 more
core   +1 more source

JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging

The Astrophysical Journal Supplement Series, 2023
JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging data release from the JWST ...
Marcia J. Rieke, Brant Robertson, Sandro Tacchella, Kevin Hainline, Benjamin D. Johnson, Ryan Hausen, Zhiyuan Ji, Christopher N. A. Willmer, Daniel J. Eisenstein, Dávid Puskás, Stacey Alberts, Santiago Arribas, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J. Bunker, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, A. Lola Danhaive, Christa DeCoursey, Alan Dressler, Eiichi Egami, Ryan Endsley, Jakob M. Helton, Raphael E. Hviding, Nimisha Kumari, Tobias J. Looser, Jianwei Lyu, Roberto Maiolino, Michael V. Maseda, Erica J. Nelson, George Rieke, Hans-Walter Rix, Lester Sandles, Aayush Saxena, Katherine Sharpe, Irene Shivaei, Maya Skarbinski, Renske Smit, Daniel P. Stark, Meredith Stone, Katherine A. Suess, Fengwu Sun, Michael Topping, Hannah Übler, Natalia C. Villanueva, Imaan E. B. Wallace, Christina C. Williams, Chris Willott, Lily Whitler, Joris Witstok, Charity Woodrum   +58 more
doaj   +1 more source

How to Make the Dream Come True: The Astronomers' Data Manifesto [PDF]

, 2007
Astronomy is one of the most data-intensive of the sciences. Data technology is accelerating the quality and effectiveness of its research, and the rate of astronomical discovery is higher than ever. As a result, many view astronomy as being in a 'Golden
Norris, Ray P
core   +6 more sources

Extragalactic Results from the Infrared Space Observatory

, 2000
More than a decade ago the IRAS satellite opened the realm of external galaxies for studies in the 10 to 100 micron band and discovered emission from tens of thousands of normal and active galaxies.
Acosta-Pulido JA, Afonso C, Alexander T, Altieri B, Alton PB, Aussel H, Aussel H, Awaki H, Binette L, Boller T, Boselli A, Boselli A, Boulade O, Braine J, Catherine J. Cesarsky, Cesarsky CJ, Cesarsky D, Cesarsky D, Chapman SC, Clavel J, Clegg PE, Clements DL, Contursi A, de Graauw T, Desert FX, Desert FX, Doherty RM, Duley WW, Efstathiou A, Elbaz D, Fadda D, Fischer J, Flores H, Franceschini A, Gilmore G, Haas M, Haas M, Haas M, Hippelein H, Kawara K, Kegel WH, Kessler MF, Knapp GR, Krügel E, Kunze D, Lagache G, Lagache G, Lagache G, Lai O, Laureijs RJ, Laurent O, Laurent O, Lemke D, Lemonon L, Lord SD, Lutz D, Lutz D, Lutz D, Lutz D, Mattila K, Mattila K, Metcalfe L, Mirabel IF, Mirabel IF, Moorwood AFM, Moorwood AFM, Najarro F, Nakagawa T, Oliva E, Pagani L, Pfenniger D, Puget JL, Puget JL, Radovich M, Reinhard Genzel, Rigopoulou D, Rigopoulou D, Rigopoulou D, Rodriguez Espinosa JM, Rouan D, Roussel H, Rowan-Robinson M, Schaerer D, Scott D, Scoville NZ, Serjeant S, Siebenmorgen R, Stickel M, Sturm E, Sturm E, Taniguchi Y, Taniguchi Y, Tecza M, Thornley MD, Tran DQ, Tuffs RJ, Unger SJ, Valentijn EA, Verstraete L, Viegas SM, Vignati P, Vigroux L, Walter R, Wilkes BJ   +103 more
core   +1 more source