Results 111 to 120 of about 18,958 (240)

The Star Formation Across Cosmic Time (SFACT) Survey. I. Survey Description and Early Results from a New Narrowband Emission-line Galaxy Survey

The Astronomical Journal, 2023
We introduce the Star Formation Across Cosmic Time (SFACT) survey. SFACT is a new narrowband survey for emission-line galaxies (ELGs) and QSOs being carried out using the wide-field imager on the WIYN 3.5 m telescope.
John J. Salzer, David J. Carr, Jennifer Sieben, Samantha W. Brunker, Alec S. Hirschauer   +4 more
doaj   +1 more source

The Sfr Of Luminous Qsos

, 2017
Searching for suppression or enhancement of the star formation rate in the overall QSOs ...
David J. Rosario, F. Stanley, Kirsten Kraiberg Knudsen, Christopher Harrison   +3 more
openaire   +3 more sources

Detecting and Characterizing Mg ii Absorption in DESI Survey Validation Quasar Spectra

The Astronomical Journal, 2023
We present findings of the detection of Magnesium II (Mg ii , λ = 2796, 2803 Å) absorbers from the early data release of the Dark Energy Spectroscopic Instrument (DESI).
Lucas Napolitano, Agnesh Pandey, Adam D. Myers, Ting-Wen Lan, Abhijeet Anand, Jessica Aguilar, Steven Ahlen, David M. Alexander, David Brooks, Rebecca Canning, Chiara Circosta, Axel De La Macorra, Peter Doel, Sarah Eftekharzadeh, Victoria A. Fawcett, Andreu Font-Ribera, Juan Garcia-Bellido, Satya Gontcho A Gontcho, L. Le Guillou, Julien Guy, Klaus Honscheid, Stephanie Juneau, T. Kisner, Martin Landriau, Aaron M. Meisner, Ramon Miquel, J. Moustakas, Will J. Percival, J. Xavier Prochaska, Michael Schubnell, Gregory Tarlé, B. A. Weaver, Benjamin Weiner, Zhimin Zhou, Hu Zou, Siwei Zou   +35 more
doaj   +1 more source

Morphological Feature Distances among the Spectral Types of SDSS Galaxies

The Astrophysical Journal
This study investigates the morphological feature distances among various spectral types of galaxies from the Sloan Digital Sky Survey, including strong and weak active galactic nuclei (AGN), quasi-stellar objects (QSOs), quiescent, and star-forming ...
Duho Kim, Garreth Martin
doaj   +1 more source

Observing the Galaxy Environment of QSOs [PDF]

, 1997
2 pages, 1 figure (postscript), Latex (uses lamuphys.sty). To appear in the proceedings of the ESO/IAC Conference on 'Quasar Hosts' held in Puerta de la Cruz, Tenerife, Spain, Sep.
K. Jäger, Klaus J. Fricke, Jochen Heidt
openaire   +3 more sources

Q-SOS—A Sensor Observation Service for Accessing Quality Descriptions of Environmental Data

ISPRS International Journal of Geo-Information, 2015
The worldwide Sensor Web comprises observation data from diverse sources. Each data provider may process and assess datasets differently before making them available online. This information is often invisible to end users.
Anusuriya Devaraju, Simon Jirka, Ralf Kunkel, Juergen Sorg   +3 more
doaj   +1 more source

X-QUEST: A Comprehensive X-ray Study of Local ULIRGs and QSOs

, 2010
We present results from the X-ray portion of a multi-wavelength study of local ULIRGs and QSOs called QUEST (Quasar-ULIRG Evolution STudy). The data consist of new and archival X-ray data on 40 ULIRGs and 26 PG QSOs taken with Chandra and XMM-Newton.
Arnaud, Brandl, Daddi, Dasyra, Dasyra, Dasyra, Förster Schreiber, Ghisellini, Hopkins, Hopkins, Hopkins, Imanishi, Iwasawa, Jester, Just, Kim, Kormendy, Li., Li., Marconi, Miller, Netzer, Protassov, Ptak, Rupke, Rupke, Sanders, Schurch, Schweitzer, Shapiro, Stacy H. Teng, Sturm, Sylvain Veilleux, Tacconi, Teng, Teng, Teng, Tremaine, Veilleux, Veilleux, Veilleux, Veilleux, Veilleux, Winter   +43 more
core   +1 more source

Herschel-ATLAS: the far-infrared properties and star-formation rates of broad absorption line quasi-stellar objects [PDF]

, 2012
We have used data from the Herschel-ATLAS at 250, 350 and 500 \mu m to determine the far-infrared (FIR) properties of 50 Broad Absorption Line Quasars (BAL QSOs).
A. Cava, A. Cooray, A. Dariush, Antonucci, Arav, Best, Best, Bonfield, Booth, Bower, Brotherton, Béthermin, C. Hoyos, Carilli, Churchill, Cirasuolo, Cowie, Croton, D. J. B. Smith, D. L. Clements, Dai, De Lucia, DiPompeo, DiPompeo, E. Ibar, E. Valiante, Eales, Elvis, Elvis, Farrah, Farrah, Farrah, G. De Zotti, Gabel, Gallagher, Gallagher, Gallagher, Gibson, Gibson, Granato, Green, Griffin, Hall, Hamann, Hamann, Hardcastle, Hatziminaoglou, Hewett, Ho, Ibar, J. A. Stevens, J. M. Cao Orjales, K. Coppin, Kennicutt, L. Dunne, Lazarova, Leitherer, Lewis, M. Baes, M. J. Hardcastle, M. J. Jarvis, M. J. Page, Mann, McCarthy, Murray, Murray, Ogle, Omont, Page, Page, Pascale, Peacock, Pilbratt, Poglitsch, Priddey, Priddey, R. Auld, R. Hopwood, R. J. Ivison, Rawlings, Reichard, Reichard, Rigby, S. Dye, S. Eales, S. Maddox, Sanders, Scannapieco, Scaringi, Schneider, Schneider, Sijacki, Smith, Smith, Sprayberry, Springel, Streblyanska, Tolea, Trump, Urrutia, Voit, Weymann, Willott   +102 more
core   +3 more sources

A halo model approach for mock catalogs of time-variable strong gravitational lenses

The Open Journal of Astrophysics
Time delays in both galaxy- and cluster-scale strong gravitational lenses have recently attracted a lot of attention in the context of the Hubble tension.
Katsuya T. Abe, Masamune Oguri, Simon Birrer, Narayan Khadka, Philip J. Marshall, Cameron Lemon, Anupreeta More, the LSST Dark Energy Science Collaboration   +7 more
doaj   +1 more source

DESI Mg ii Absorbers: Extinction Characteristics and Quasar Redshift Accuracy

The Astronomical Journal
In this paper, we study how absorption-line systems affect the spectra and redshifts of quasi-stellar objects (QSOs), using catalogs of Mg ii absorbers from the early data release and first data release of the Dark Energy Spectroscopic Instrument.
Lucas Napolitano, Adam D. Myers, Victoria A. Fawcett, Jessica Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Shaun Cole, Axel de la Macorra, Biprateep Dey, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Klaus Honscheid, Stephanie Juneau, Andrew Lambert, Martin Landriau, Laurent Le Guillou, Aaron Meisner, Ramon Miquel, John Moustakas, Jeffrey A. Newman, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Michael Schubnell, David Sprayberry, Gregory Tarlé, Benjamin Alan Weaver, Hu Zou   +34 more
doaj   +1 more source