Results 101 to 110 of about 49,283 (254)

Do star formation rates of galaxy clusters depend on mass?: blue/late-type fractions, total star formation rates of 115 galaxy clusters as a function of cluster virial mass

, 2004
There has been plenty of observational evidence of cluster galaxy evolution such as the Butcher-Oemler effect and the decrease in S0 fraction with increasing redshift.
Goto, Tomotsugu
core   +1 more source

Galaxy clustering and its dependencies at high redshift

, 2021
Studies of the galaxy clustering at low and intermediate redshifts show that the relation between the luminous structure and underlying dark matter distribution is not only biased but also dependent on properties of galaxies. To understand the origin of this separation the studies need to be conducted on spectroscopic data at higher redshift. With this
openaire   +1 more source

The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S

The Astrophysical Journal
We report the discovery of an extreme galaxy overdensity at z = 5.4 in the GOODS-S field using James Webb Space Telescope (JWST)/NIRCam imaging from JADES and JEMS alongside JWST/NIRCam wide-field slitless spectroscopy from FRESCO.
Jakob M. Helton, Fengwu Sun, Charity Woodrum, Kevin N. Hainline, Christopher N. A. Willmer, George H. Rieke, Marcia J. Rieke, Sandro Tacchella, Brant Robertson, Benjamin D. Johnson, Stacey Alberts, Daniel J. Eisenstein, Ryan Hausen, Nina R. Bonaventura, Andrew Bunker, Stephane Charlot, Mirko Curti, Emma Curtis-Lake, Tobias J. Looser, Roberto Maiolino, Chris Willott, Joris Witstok, Kristan Boyett, Zuyi Chen, Eiichi Egami, Ryan Endsley, Raphael E. Hviding, Daniel T. Jaffe, Zhiyuan Ji, Jianwei Lyu, Lester Sandles   +30 more
doaj   +1 more source

A 100 Mpc2 Structure Traced by Hyperluminous Galaxies around a Massive z = 2.85 Protocluster

The Astrophysical Journal
We present wide-field mapping at 850 μ m and 450 μ m of the z = 2.85 protocluster in the HS 1549+19 field using the Submillimetre Common-User Bolometer Array 2. Spectroscopic follow-up of 18 bright sources selected at 850 μ m, using the Northern Extended
George C.P. Wang, Scott C. Chapman, Nikolaus Sulzenauer, Frank Bertoldi, Christopher C. Hayward, Ryley Hill, Satoshi Kikuta, Yuichi Matsuda, Douglas Rennehan, Douglas Scott, Ian Smail, Charles C. Steidel   +11 more
doaj   +1 more source

A search for high redshift clusters associated with radio galaxies at 2 < z < 4 [PDF]

, 2001
High redshift radio galaxies are amongst the most massive galaxies in the early Universe and have properties expected from central galaxies in forming clusters.
Kurk, J. D., Miley, G. K., Pentericci, L., Roettgering, H. J. A., Venemans, B. P.   +4 more
core   +1 more source

The Search for AGN in Distant Galaxy Clusters

, 2004
We are undertaking the first systematic study of the prevalence of AGN activity in a large sample of high redshift galaxy clusters. Local clusters contain mainly red elliptical galaxies, and have little or no luminous AGN activity.
Almaini, O., Best, P. N., Dowsett, R., Johnson, O.   +3 more
core   +1 more source

Towards the first mean pressure profile estimate with the NIKA2 Sunyaev-Zeldovich Large Program [PDF]

EPJ Web of Conferences
High-resolution mapping of the hot gas in galaxy clusters is a key tool for cluster-based cosmological analyses. Taking advantage of the NIKA2 millimeter camera operated at the IRAM 30-m telescope, the NIKA2 SZ Large Program seeks to get a high ...
Hanser C., Adam R., Ade P., Ajeddig H., André P., Artis E., Aussel H., Bartalucci I., Beelen A., Benoît A., Berta S., Bing L., Bourrion O., Calvo M., Catalano A., De Petris M., Désert F.-X., Doyle S., Driessen E.F.C., Ejlali G., Ferragamo A., Gomez A., Goupy J., Katsioli S., Kéruzoré F., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lestrade J.-F., Macías-Pérez J.F., Madden S.C., Maury A., Mauskopf P., Mayet F., Monfardini A., Moyer-Anin A., Muñoz-Echeverría M., Paliwal A., Payerne C., Perotto L., Pisano G., Pointecouteau E., Ponthieu N., Pratt G. W., Revéret V., Rigby A.J., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Sievers A., Tucker C.   +53 more
doaj   +1 more source

The ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) I. Newly identified X-ray luminous clusters at z>=0.2

, 2011
We report 19 intermediate redshift clusters newly detected in the ROSAT All-Sky survey that are spectroscopically confirmed. They form a part of 911 objects in the REFLEX II cluster catalogue with a limiting flux of 1.8\times10^12 erg/s/cm2 in the 0.1-2 ...
Abell, Abell, Allen, Arnaud, Böhringer, Böhringer, Dickey, G. Chon, Guzzo, H. Böhringer, Jones, Kurtz, Navarro, Planck Collaboration, Planck Collaboration, Pratt, Sunyaev   +16 more
core   +1 more source

JWST’s First Glimpse of a z > 2 Forming Cluster Reveals a Top-heavy Stellar Mass Function

The Astrophysical Journal Letters
Clusters and their progenitors (protoclusters) at z ∼ 2 − 4, the peak epoch of star formation, are ideal laboratories to study the formation process of both the clusters themselves and their member galaxies.
Hanwen Sun, Tao Wang, Ke Xu, Emanuele Daddi, Qing Gu, Tadayuki Kodama, Anita Zanella, David Elbaz, Ichi Tanaka, Raphael Gobat, Qi Guo, Jiaxin Han, Shiying Lu, Luwenjia Zhou   +13 more
doaj   +1 more source

Cluster Mass Reconstruction by a Weak Shear Field

, 1999
The tidal gravitational field of galaxy clusters causes a coherent distortion of the images of background sources. Since the distribution of image distortions, namely the shear field, traces the local gravitational potential of a deflector, it can be ...
Futamase, Toshifumi, Tada, Masashi, Umetsu, Keiichi   +2 more
core   +3 more sources