Results 31 to 40 of about 739 (176)

Bright submillimeter galaxies do trace galaxy protoclusters [PDF]

, 2023
There is controversy in the literature regarding whether distant, massive, and dusty starbursts selected at (sub)millimeter wavelengths can trace galaxy overdensities.
Rosa Calvi, Gianluca Castignani, Helmut Dannerbauer, Dannerbauer, Helmut, CASTIGNANI, Gianluca, CALVI, Rosa   +5 more
core   +5 more sources

A Lyman-α protocluster at redshift 6.9 [PDF]

Nature Astronomy, 2021
Protoclusters, the progenitors of the most massive structures in the Universe, have been identified at redshifts of up to 6.6. Besides exploring early structure formation, searching for protoclusters at even higher redshifts is particularly useful to probe the reionization. Here we report the discovery of the protocluster LAGER-z7OD1 at a redshift of 6.
Weida Hu, Junxian Wang, Leopoldo Infante, James E. Rhoads, Zhen-Ya Zheng, Huan Yang, Sangeeta Malhotra, L. Felipe Barrientos, Chunyan Jiang, Jorge González-López, Gonzalo Prieto, Lucia A. Perez, Pascale Hibon, Gaspar Galaz, Alicia Coughlin, Santosh Harish, Xu Kong, Wenyong Kang, Ali Ahmad Khostovan, John Pharo, Francisco Valdes, Isak Wold, Alistair R. Walker, XianZhong Zheng   +23 more
openaire   +3 more sources

A PROTOCLUSTER ATz= 2.45 [PDF]

The Astrophysical Journal, 2015
submitted to ...
Diener, C., Lilly, S. J., Ledoux, C., Zamorani, G., Bolzonella, M., Murphy, D. N. A., Capak, P., Ilbert, O., Mccracken, H.   +8 more
openaire   +7 more sources

Enhancement of AGN in a protocluster at z = 1.6 [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
We investigate the prevalence of AGN in the high-redshift protocluster $\rm{Cl}\,0218.3$-$0510$ at $z=1.62$. Using imaging from the Chandra X-ray Telescope, we find a large overdensity of AGN in the protocluster; a factor of $23\pm9$ times the field density of AGN.
Charutha Krishnan, Nina A. Hatch, Omar Almaini, Dale Kocevski, Elizabeth A. Cooke, William G. Hartley, Guenther Hasinger, David T. Maltby, Stuart I. Muldrew, Chris Simpson   +9 more
openaire   +5 more sources

The abundance of lensing protoclusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
Weak gravitational lensing provides a potentially powerful method for the detection of clusters. In addition to cluster candidates, a large number of objects with possibly no optical or X-ray component have been detected in shear-selected samples.
D'Aloisio, Anson, Furlanetto, Steven R., Natarajan, Priyamvada   +2 more
openaire   +2 more sources

Multi-wavelength observations of starbursting protoclusters [PDF]

, 2020
Crossmatching between Planck and Herschel data has revealed a number of candidate protoclusters with starbursting galaxies. These starbursting galaxies are believed to be progenitors of elliptical galaxies in the cores of today's massive galaxy clusters.
Cheng, Tai-An
core   +1 more source

SCUBA-2 overdensities in candidate protoclusters [PDF]

, 2023
VizieR online Data Catalogue associated with article published in journal Monthly Notices of the Royal Astronomical Society with title ' SCUBA-2 overdensities associated with candidate protoclusters selected from Planck data.' (bibcode: 2020MNRAS.494 ...
Bremer, M., University of Oviedo, Greenslade, J., Dannerbauer, H., University of British Columbia, Instituto de Astrofísica de Canarias, Wang, L., University of California Irvine, Clements, D.L., European Space Astronomy Centre (ESA/ESAC), Riechers, D.A., De, Zotti G., University of South Africa, Conversi, L., Vaccari, M., Universidad de Valparaíso, Adam Mickiewicz University, Gonzalez-Nuevo, J., Ma, J., Scott, D., Instituto Universitario de Ciencias y Tecnologias Espaciales de Asturias (ICTEA), Max Planck Institut für Astronomie, Ibar, E., SRON Netherlands Institute for Space Research, INAF/Istituto di Radioastronomia, Leeuw, L., Nayyeri, H., Cairns, J., University of Bristol, University of La Laguna, Andreani, P., Cheng, T., Eales, S., Imperial College London, Temi, P., Cornell University, Valtchanov, I., Van, Kampen E., Cardiff University, European Southern Observatory, University of the Western Cape, NASA Ames Research Center, Cooray, A., Astronomy, INAF - Osservatorio Astronomico di Padova, Michalowski, M.J.   +45 more
core   +1 more source

Prospects for studying the mass and gas in protoclusters with future CMB observations [PDF]

The Open Journal of Astrophysics
Protoclusters are the progenitors of massive galaxy clusters. Understanding the properties of these structures is important for building a complete picture of cluster formation and for understanding the impact of environment on galaxy evolution.
Anna Gardner, Eric Baxter, Srinivasan Raghunathan, Weiguang Cui, Daniel Ceverino   +4 more
doaj   +3 more sources

The Structures and Kinematics of Protoclusters [PDF]

Symposium - International Astronomical Union, 2004
Embedded clusters produce the greatest numbers of stars within our Galaxy but the process by which clusters themselves form is not well understood. The structures and kinematics of the very youngest embedded clusters, i.e., “protoclusters” with ages <106 yr, should provide needed insight.
openaire   +2 more sources

Protoclusters at 𝓏 = 5.7: a view from the MultiDark galaxies [PDF]

, 2020
Protoclusters, which will yield galaxy clusters at lower redshift, can provide valuable information on the formation of galaxy clusters. However, identifying progenitors of galaxy clusters in observations is not an easy task, especially at high redshift.
Dave, Romeel, Yepes, Gustavo, Knebe, Alexander, Cui, Weiguang, Yepes Alonso, Gustavo, Qiao, Jiaqi, Peacock, John A.   +6 more
core   +1 more source