Results 51 to 60 of about 2,272 (184)

Evidence for a Massive Protocluster in S255N [PDF]

The Astronomical Journal, 2007
S255N is a luminous far-infrared source that contains many indications of active star formation but lacks a prominent near-infrared stellar cluster. We present mid-infrared through radio observations aimed at exploring the evolutionary state of this region.
Cyganowski, C. J., Brogan, C. L., Hunter, T. R.   +2 more
openaire   +2 more sources

Stellar mass function of cluster galaxies at z ~ 1.5: evidence for reduced quenching efficiency at high redshift [PDF]

, 2016
Indexación: Web of ScienceWe present the stellar mass functions (SMFs) of passive and star-forming galaxies with a limiting mass of 10(10.1) M-circle dot in four spectroscopically confirmed Spitzer Adaptation of the Red-sequence Cluster Survey (SpARCS ...
Cooper, MC, DeGroot, A, Demarco, R, Foltz, R, Lidman, C, Muzzin, A, Nantais, JB, Noble, A, Van der Burge, RFJ, Wilson, G   +9 more
core   +1 more source

Probing the effect of the protocluster environment on galaxy morphology at z = 2.23

Astronomy & Astrophysics
Context. As galaxies evolve in dense cluster and protocluster environments, they interact and quench their star formation. This gradually transforms the dominant galaxy population from star-forming galaxies to quiescent red galaxies.
Golden-Marx E., Cai Z., Shi D., Wang X., Lemaux B. C., Vulcani B., Häußler B., Renard P., Shen L., Giddings F.   +9 more
doaj   +1 more source

Tidal Disruption of Protoclusters in Giant Molecular Clouds

, 2008
We study the collapse of protoclusters within a giant molecular cloud (GMC) to determine the conditions under which collapse is significantly disrupted.
Eva‐Marie Proszkow, Kramer C., Mestel L., Philip C. Myers, Terlevich E., Theuns T., Whitworth A. P.   +6 more
core   +1 more source

A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5 [PDF]

, 2017
We present a spectroscopic survey of high-redshift, luminous galaxies over four square degrees on the sky, aiming to build a large and homogeneous sample of Ly$\alpha$ emitters (LAEs) at $z\approx5.7$ and 6.5, and Lyman-break galaxies (LBGs) at $5 ...
Bailey III, John I., Bian, Fuyan, Blanc, Guillermo A., Crane, Jeffrey D., Fan, Xiaohui, Ho, Luis C., Infante, Leopoldo, Jiang, Linhua, Mateo, Mario, Olszewski, Edward W., Oyarzun, Grecco A., Shectman, Stephen, Shen, Yue, Thompson, Ian, Walker, Matthew G., Wang, Ran, Wu, Jin, Wu, Xue-Bing, Zheng, Zhen-Ya   +18 more
core   +3 more sources

An ionized superbubble powered by a protocluster at z = 6.5 [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2020
ABSTRACT We show herein that a proto-cluster of Ly α emitting galaxies, spectroscopically confirmed at redshift 6.5, produces a remarkable number of ionizing continuum photons. We start from the Ly α fluxes measured in the spectra of the sources detected spectroscopically. From these fluxes, we derive the ionizing emissivity of continuum
J M Rodríguez Espinosa, J M Mas-Hesse, E Salvador-Solé, R Calvi, A Manrique, K Chanchaiworawit, R Guzman, J Gallego, A Herrero, A Marín Franch   +9 more
openaire   +6 more sources

A massive protocluster of galaxies at a redshift of z ≈ 5.3 [PDF]

Nature, 2011
Massive clusters of galaxies have been found that date from as early as 3.9 billion years1 (3.9 Gyr; z = 1.62) after the Big Bang, containing stars that formed at even earlier epochs2, 3. Cosmological simulations using the current cold dark matter model predict that these systems should descend from ‘protoclusters’—early overdensities of massive ...
Capak, PL, Riechers, D, Scoville, NZ, Carilli, C, Cox, P, Neri, R, Robertson, B, Savato, M, Schinnerer, E, Yan, L, Wilson, GW, Yun, Min, Civano, F, Elvis, M, Karim, A, Mobasher, B, Staguhn, JG   +16 more
openaire   +4 more sources

ODIN: High Clustering Strength of Protoclusters at Cosmic Noon

The Astrophysical Journal
The One-hundred-deg ^2 DECam Imaging in Narrowbands (ODIN) survey is carrying out a systematic search for protoclusters during Cosmic Noon, using Ly α -emitting galaxies (LAEs) as tracers.
Vandana Ramakrishnan, Kyoung-Soo Lee, Nicole Firestone, Eric Gawiser, Maria Celeste Artale, Caryl Gronwall, Lucia Guaita, Ho Seong Hwang, Sang Hyeok Im, Woong-Seob Jeong, Seongjae Kim, Ankit Kumar, Jaehyun Lee, Byeongha Moon, Nelson Padilla, Changbom Park, Akriti Singh, Hyunmi Song, Paulina Troncoso Iribarren, Yujin Yang   +19 more
doaj   +1 more source

Discovery of a Proto-cluster Associated with a Ly-$\alpha$ Blob Pair at z=2.3

, 2017
Bright Ly-$\alpha$ blobs (LABs) --- extended nebulae with sizes of $\sim$100kpc and Ly-$\alpha$ luminosities of $\sim$10$^{44}$erg s$^{-1}$ --- often reside in overdensities of compact Ly-$\alpha$ emitters (LAEs) that may be galaxy protoclusters.
Bertoldi, Frank, Bădescu, Toma, Karim, Alexander, Magnelli, Benjamin, Yang, Yujin, Zabludoff, Ann   +5 more
core   +1 more source

Galaxy protocluster candidates around z ~ 2.4 radio galaxies [PDF]

, 2010
We study the environments of 6 radio galaxies at 2.2 < z < 2.6 using wide-field near-infrared images. We use colour cuts to identify galaxies in this redshift range, and find that three of the radio galaxies are surrounded by significant surface ...
De Breuck, C., Doherty, M., Galametz, A., Hatch, N. A., Kodama, T., Kurk, J. D., Miley, G. K., Overzier, R. A., Röttgering, H. J. A., Seymour, N., Venemans, B. P., Vernet, J., Zirm, A. W.   +12 more
core   +2 more sources