Results 81 to 90 of about 86,139 (299)

The Apparently Normal Galaxy Hosts for Two Luminous Quasars

, 1995
HST images (with WFPC2) of PHL~909\ ($z = 0.171$) and PG~0052$+$251\ ($z = 0.155$) show that these luminous radio-quiet quasars each occur in an apparently normal host galaxy. The host galaxy of PHL~909 is an elliptical galaxy ($\sim$ E4) and the host of
Bahcall, John N., Kirhakos, Sofia, Schneider, Donald P.   +2 more
core   +1 more source

Machine Learning‐Augmented Loop‐Mediated Isothermal Amplification‐Enabled Point‐of‐Care for Mpox‐Specific Detection

Advanced Intelligent Systems, EarlyView.
A low‐cost, portable point‐of‐care platform for rapid Mpox detection using loop‐mediated isothermal amplification is reported. The device integrates fluorescence readout and mobile monitoring. A machine‐learning model analyzes temperature data and correlates thermal changes with DNA concentration, enabling sensitive and reliable molecular diagnosis in ...
Nazente Atceken, Ahmed Choukri Abdullah, Olgac Ozarslan, Ziya Yıldız, Savas Tasoglu   +4 more
wiley   +1 more source

No Evidence of Asymmetrically Enhanced Star Formation in Infalling Galaxies in UNIONS

The Astrophysical Journal
Ram pressure stripping is a well-known environmental quenching mechanism that removes gas from galaxies infalling into groups and clusters. In some extreme examples of ram pressure stripping, galaxies with extended gas tails show evidence of enhanced ...
Lauren M. Foster, Laura C. Parker, Stephen Gwyn, Ian D. Roberts, James E. Taylor, Michael J. Hudson, Alan W. McConnachie, Thomas de Boer   +7 more
doaj   +1 more source

The importance of the local density in shaping the galaxy stellar mass functions [PDF]

, 2011
Exploiting the capabilities of four different surveys --- the Padova-Millennium Galaxy and Group Catalogue (PM2GC), the WIde-field Nearby Galaxy-cluster Survey (WINGS), the IMACS Cluster Building Survey (ICBS) and the ESO Distant Cluster Survey (EDisCS) -
Alan Dressler, Alessia Moretti, August Oemler, Baldry, Balogh, Bell, Benedetta Vulcani, Berta, Bianca M. Poggianti, Bolzonella, Bolzonella, Brunner, Bruzual, Bundy, Calvi, Cava, Colbert, Colless, De Lucia, De Lucia, Dressler, Ebeling, Ebeling, Ebeling, Ellison, Fasano, Gehrels, Giovanni Fasano, Gladders, Gonzalez, Grützbauch, Grützbauch, Gunawardhana, Haas, Halliday, Kauffmann, Kroupa, Liske, Maraston, Martínez, Mauro D’Onofrio, Milvang-Jensen, Moresco, Mouhcine, Pelló, Peng, Poggianti, Poggianti, Roberts, Rosa Calvi, Rudnick, Rudnick, Rudnick, Scodeggio, Scoville, Taylor, Valentinuzzi, van der Wel, Vandana Desai, Varela, Vulcani, Vulcani, Vulcani, White, Wolf, York   +65 more
core   +2 more sources

The THESEUS Space Mission and the Infrared Telescope Calibration Unit

Astronomische Nachrichten, EarlyView.
ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó, Rebeka Gyöngyi Kiss, Lorenzo Amati, Bendegúz Koncz, Örs Detre, Gyula Zilizi, Zsolt Bagoly, István I. Rácz, Sándor Pintér, L. Viktor Tóth   +9 more
wiley   +1 more source

Clustering of galaxies around radio quasars at 0.5 < z < 0.8 [PDF]

, 1999
We have observed the galaxy environments around a sample of 21 radio-loud, steep-spectrum quasars at 0 ...
Abell, Allington-Smith, Andersen, Antonucci, Barthel, Barthel, Benítez, Best, Biretta, Burstein, Cardelli, Carlberg, Christian, Condon, Croft, Croft, Croom, Davis, de Robertis, Dickinson, Dopita, Downes, Eales, Ellingson, Ellingson, Fanti, Fisher, Forman, Fort, Fukugita, Groth, Guiderdoni, Guzzo, Hall, Hammer, Henry, Hill, Hudon, Hutchings, Jones, Kaiser, Kapahi, Kellerman, Koo, Kormendy, Lacy, Laing, Laing, Lake, Large, Le Fèvre, Lilje, Lilly, Lilly, Lin, Longair, Longair, Loveday, Loveday, Macklin, Magliocchetti, Magorrian, Margrethe Wold, Mark Lacy, Metcalfe, Miller, Morganti, Netzer, Oke, Peacock, Per B. Lilje, Prestage, Prestage, Rawlings, Reid, Riley, Rocca-Volmerange, Roche, Rosati, Rossitter, Schechter, Scheuer, Schmidtke, Schneider, Seldner, Serjeant, Serjeant, Serjeant, Smail, Small, Smith, Smith, Steidel, Stephen Serjeant, Stockton, Taylor, Valdes, Wilkinson, Willott, Willott, Wurtz, Yates, Yee, Yee, Yee, Yee, Zirbel   +106 more
core   +3 more sources

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

The Importance of Gas Starvation in Driving Satellite Quenching in Galaxy Groups at z ~ 0.8

The Astrophysical Journal
We present results from a Keck/DEIMOS survey to study satellite quenching in group environments at z  ~ 0.8 within the Extended Groth Strip (EGS). We target 11 groups in the EGS with extended X-ray emission. We obtain high-quality spectroscopic redshifts
Devontae C. Baxter, Sean P. Fillingham, Alison L. Coil, Michael C. Cooper   +3 more
doaj   +1 more source

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity

, 2007
(Abridged) We develop a model for the cosmological role of mergers in the evolution of starbursts, quasars, and spheroidal galaxies. Combining halo mass functions (MFs) with empirical halo occupation models, we calculate where major galaxy-galaxy mergers
Athanassoula E., Bower R. G., Combes F., da Angela J., Dušan Kereš, Gao L., Kormendy J., Krivitsky D. S., Lars Hernquist, Li C., Lynden-Bell D., Mo H. J., Pfenniger D., Philip F. Hopkins, Richstone D., Salviander S., Saunders W., Shakura N. I., Soltan A., Thomas J. Cox, Weinmann S. M., White S. D. M.   +21 more
core   +1 more source

The Properties of Radio Galaxies and the Effect of Environment in Large Scale Structures at $z\sim1$ [PDF]

, 2017
In this study we investigate 89 radio galaxies that are spectroscopically-confirmed to be members of five large scale structures in the redshift range of $0.65 \le z \le 0.96$. Based on a two-stage classification scheme, the radio galaxies are classified
Becker, Robert H., Fassnacht, Christopher D., Gal, Roy R., Lemaux, Brian C., Lubin, Lori M., Miller, Neal A., Rumbaugh, Nicholas, Shen, Lu, Squires, Gordon, Tomczak, Adam R., Wu, Po-Feng.   +10 more
core   +3 more sources