Results 11 to 20 of about 15,250,094 (223)

Galaxy Merger Candidates in High-redshift Cluster Environments [PDF]

The Astrophysical Journal, 2017
Abstract We compile a sample of spectroscopically and photometrically selected cluster galaxies from four high-redshift galaxy clusters ( ) from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS), and a comparison field sample selected from the UKIDSS Deep ...
A. G. Delahaye, T. M. A. Webb, J. Nantais, A. DeGroot, G. Wilson, A. Muzzin, H. K. C. Yee, R. Foltz, A. G. Noble, R. Demarco, A. Tudorica, M. C. Cooper, C. Lidman, S. Perlmutter, B. Hayden, K. Boone, J. Surace   +16 more
openaire   +5 more sources

The Association of Galaxy Clusters with Moderately-High-Redshift Quasars [PDF]

Symposium - International Astronomical Union, 1986
CCD images of quasars having redshifts between 0.3 and 0.65 are analyzed to study the association of galaxies with quasars. Average luminosity functions (LF) of the excess galaxies associated with the radio-loud quasars are determined. It is found that for the sub-sample with z>0.55, there is a significant brightening of the characteristic magnitude
H. K. C. Yee, Richard F. Green
openaire   +1 more source

ODIN: Where Do Lyα Blobs Live? Contextualizing Blob Environments within Large-scale Structure

The Astrophysical Journal, 2023
While many Ly α blobs (LABs) are found in and around several well-known protoclusters at high redshift, how they trace the underlying large-scale structure is still poorly understood. In this work, we utilize 5352 Ly α emitters (LAEs) and 129 LABs at z =
Vandana Ramakrishnan, Byeongha Moon, Sang Hyeok Im, Rameen Farooq, Kyoung-Soo Lee, Eric Gawiser, Yujin Yang, Changbom Park, Ho Seong Hwang, Francisco Valdes, Maria Celeste Artale, Robin Ciardullo, Arjun Dey, Caryl Gronwall, Lucia Guaita, Woong-Seob Jeong, Nelson Padilla, Akriti Singh, Ann Zabludoff   +18 more
doaj   +1 more source

The clustering and host haloes of galaxy mergers at high redshift [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
10 pages, 5 figures, accepted in MNRAS, version matches published ...
Wetzel, Andrew R., Cohn, J. D., White, Martin   +2 more
openaire   +2 more sources

Spatial clustering of high-redshift Lyman-break galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
Accepted for publication in ...
Jose, Charles, Subramanian, Kandaswamy, Srianand, Raghunathan, Samui, Saumyadip   +3 more
openaire   +2 more sources

Evaluating the GeoSnap 13‐μ$$ \mu $$m cutoff HgCdTe detector for mid‐IR ground‐based astronomy

Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
Abstract New mid‐infrared HgCdTe (MCT) detector arrays developed in collaboration with Teledyne Imaging Sensors (TIS) have paved the way for improved 10‐μ$$ \mu $$m sensors for space‐ and ground‐based observatories. Building on the successful development of longwave HAWAII‐2RGs for space missions such as NEO Surveyor, we characterize the first 13‐μ ...
Jarron M. Leisenring, Dani Atkinson, Rory Bowens, Vincent Douence, William F. Hoffmann, Michael R. Meyer, John Auyeung, James Beletic, Mario S. Cabrera, Alexandra Z. Greenbaum, Philip Hinz, Derek Ives, William J. Forrest, Craig W. McMurtry, Judith L. Pipher, Eric Viges   +15 more
wiley   +1 more source

Clustering of galaxies at high redshifts [PDF]

Monthly Notices of the Royal Astronomical Society, 1998
Recent observations show a large concentration of galaxies at high redshift. At first sight, strong clustering of galaxies at high redshifts seems to be in contradiction with the models of structure formation. In this paper we show that such structures are a manifestation of the strong clustering of rare peaks in the density field.
openaire   +1 more source

Methods for identifying high‐redshift galaxy cluster candidates [PDF]

Astronomische Nachrichten, 2019
AbstractRecent theories linked long gamma ray bursts (GRBs) to galaxies with rapid star formation or starburst; thus, we expect that long GRBs (LGRBs) are more frequent in midcluster galaxies where mergers and tidal interactions between gas‐rich galaxies are more likely to occur. Yet there is no galaxy cluster known to be associated with LGRBs.
Pinter, Sandor, Balazs, Lajos G., Bagoly, Zsolt, Horvath, Istvan, Racz, Istvan I., Toth, Viktor L.   +5 more
openaire   +2 more sources

Unraveling the enigmatic soft x‐ray excess: Current understanding and future perspectives

Astronomische Nachrichten, Volume 344, Issue 6, August 2023., 2023
Abstract This article explores various theoretical models proposed to explain the soft x‐ray excess phenomenon, including warm Comptonization, ionized reflection models, and ionized outflowing disc winds. The soft x‐ray excess is better understood thanks to crucial observations made by ROSAT, XMM‐Newton, and eROSITA.
Thomas Boller
wiley   +1 more source

Accelerated Structural Evolution of Galaxies in a Starbursting Cluster at z = 2.51

The Astrophysical Journal Letters, 2023
Structural properties of cluster galaxies during their peak formation epoch, z ∼ 2–4 provide key information on whether and how the environment affects galaxy formation and evolution.
Can Xu, Tao Wang, Qiusheng Gu, Anita Zanella, Ke Xu, Hanwen Sun, Veronica Strazzullo, Francesco Valentino, Raphael Gobat, Emanuele Daddi, David Elbaz, Mengyuan Xiao, Shiying Lu, Luwenjia Zhou   +13 more
doaj   +1 more source