Results 101 to 110 of about 48,997 (217)

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

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

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

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

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

Galaxy stellar mass functions of different morphological types in clusters, and their evolution between z=0.8 and z=0

, 2010
We present the galaxy stellar mass function (MF) and its evolution in clusters from z~0.8 to the current epoch, based on the WIde-field Nearby Galaxy-cluster Survey (WINGS) (0 ...
Alan Dressler, Alessandro Omizzolo, Alessia Moretti, Alfonso Aragón-Salamanca, Andreon, Antonio Cava, Aragon-Salamanca, Baldry, Baldry, Baldry, Balogh, Barger, Bekki, Bekki, Bell, Bell, Benedetta Vulcani, Bernardi, Bianca M. Poggianti, Blanton, Bolzonella, Bolzonella, Borch, Boselli, Brinchmann, Brunner, Bundy, Bundy, Byrd, Capak, Cava, Conselice, Daniela Bettoni, De Propris, Desai, Dressler, Dressler, Drory, Ebeling, Ebeling, Ebeling, Fasano, Fasano, Fasano, Feulner, Finn, Font, Fontana, Fontana, Franceschini, Fritz, Gehrels, Giovanni Fasano, Gonzalez, Gregory Rudnick, Gunn, Gwyn, Halliday, Holden, Huertas-Company, Icke, Ilbert, Jacopo Fritz, Jesús Varela, Kauffmann, Kodama, Kovac, Kroupa, Larson, Lotz, Makino, Mauro D'Onofrio, McCarthy, Mihos, Milvang-Jensen, Moore, Noeske, Ocvirk, Ocvirk, Oesch, Ostriker, Pannella, Pelló, Poggianti, Poggianti, Poggianti, Poggianti, Postman, Pozzetti, Pozzetti, Pérez-González, Rudnick, Rudnick, Rudnick, Salpeter, Schechter, Smith, Sánchez-Blázquez, Tasca, Tiziano Valentinuzzi, Toft, Valentinuzzi, Valentinuzzi, van der Wel, van der Wel, Varela, Vazdekis, Vergani, von der Linden, Vulcani, White   +110 more
core   +1 more source

The Bigfoot: A Footprint of a Coma Cluster Progenitor at z = 3.98

The Astrophysical Journal Letters
Protoclusters, galaxy clusters’ high-redshift progenitors, hold the key to understanding the formation and evolution of clusters and their member galaxies. However, their cosmological distances and spatial extensions (tens of Mpc) have inhibited complete
Hanwen Sun, Tao Wang, Emanuele Daddi, Qiaoyang Hao, Ke Xu, David Elbaz, Luwenjia Zhou, Houjun Mo, Huiyuan Wang, Longyue Chen, Yangyao Chen, Shuowen Jin, Yipeng Lyu, Nikolaj Sillassen, Kai Wang, Tiancheng Yang   +15 more
doaj   +1 more source

Observations of Galaxy Clustering at High Redshift

, 1998
This paper reviews the current status of measurements of galaxy clustering at high redshifts (z > 0.3). The focus is on the inherent limitations in the observation and interpretation of the ``evolution of clustering''. It is likely that results from the first attempts to characterize galaxy clustering beyond the ``local'' universe have been ...
openaire   +2 more sources

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

Deep Chandra Observations of the z = 1.16 Relaxed, Cool-core Galaxy Cluster SPT-CL J2215-3537

The Astrophysical Journal
Galaxy clusters serve as a unique and valuable laboratory for probing cosmological models and understanding astrophysics at the high-mass limit of structure formation.
Haley R. Stueber, Adam B. Mantz, Steven W. Allen, Anthony M. Flores, R. Glenn Morris, Abigail Y. Pan, Taweewat Somboonpanyakul, Lindsey E. Bleem, Michael Calzadilla, Benjamin Floyd, Julie Hlavacek-Larrondo, Michael McDonald, Arnab Sarkar   +12 more
doaj   +1 more source