Results 81 to 90 of about 2,492,889 (299)

CLASH-VLT velocity anisotropy profiles in a stack of massive galaxy clusters

Astronomy & Astrophysics
We measured the velocity anisotropy profile, β(r), of different galaxy cluster member populations by analysing the stacked projected phase space of nine massive (M200c > 7 × 1014 M⊙) galaxy clusters at intermediate redshifts (0.18 
Maraboli Enrico, Biviano Andrea, Grillo Claudio, Mercurio Amata, Pizzuti Lorenzo, Rosati Piero, D’Addona Maurizio   +6 more
doaj   +1 more source

THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE

Odessa Astronomical Publications, 2014
The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj   +1 more source

Mind the Gap: Tightening the Mass-Richness Relation with Magnitude Gaps [PDF]

, 2013
We investigate the potential to improve optical tracers of cluster mass by exploiting measurements of the magnitude gap, m12, defined as the difference between the r-band absolute magnitude of the two brightest cluster members.
Abazajian, Allen, Andreas A. Berlind, Andrew P. Hearin, Andrew R. Zentner, Becker, Behroozi, Berlind, Blanton, Conroy, D'Onghia, Gladders, Hearin, Jeffrey A. Newman, Jones, Klypin, Koester, Kravtsov, Newman, Paranjape, Proctor, Reyes, Riebe, Rozo, Rozo, Rykoff, Skibba, Tinker, Trujillo-Gomez, Watson, Weinberg, Wu, Yang, Zentner   +33 more
core   +1 more source

SPECTROSCOPIC CONFIRMATION OF THE RICH z = 1.80 GALAXY CLUSTER JKCS 041 USING THE WFC3 GRISM: ENVIRONMENTAL TRENDS IN THE AGES AND STRUCTURE OF QUIESCENT GALAXIES [PDF]

, 2013
We present Hubble Space Telescope imaging and grism spectroscopy in the field of the distant galaxy cluster JKCS 041 using the Wide Field Camera 3.
A. Newman, R. Ellis, S. Andreon, T. Treu, A. Raichoor, G. Trinchieri   +5 more
semanticscholar   +1 more source

A Circuit of Mechanically Regulated Transcription Factors Balances Regenerative and Fibrotic Memory of Mesenchymal Stromal Cells

Advanced Science, EarlyView.
Producing MSCs on rigid culture substrates induces a scar‐making phenotype, jeapordizing therapeutic success. ‘Tissue‐soft’ surfaces prevent MSC fibrogenesis and preserve regenerative traits. An epigenetic network, driven by HOXA11 and SALL1, maintains ‘soft memory’ by keeping chromatin open in relaxed MSCs, promoting anti‐fibrotic programs.
Fereshteh Sadat Younesi, Andrew E. Miller, Li Diao, Xinying Guo, Natalie Andonian, Elham Karimizadeh, Thomas H. Barker, Boris Hinz   +7 more
wiley   +1 more source

From the Densest Clusters to the Emptiest Voids: No Evidence for Environmental Effects on the Galaxy Size–Stellar Mass Relation at Low Redshift

The Astrophysical Journal
We present a comprehensive study of the galaxy size–stellar mass relation (SMR) at low redshift ( z ≤ 0.125), using a large spectroscopic sample from the Sloan Digital Sky Survey Data Release 13 (SDSS DR13).
Mohamed H. Abdullah, Nouran E. Abdelhamid, Rasha M. Samir, Gillian Wilson   +3 more
doaj   +1 more source

Massive star clusters in the semi-analytical galaxy formation model L-Galaxies 2020

Astronomy & Astrophysics
It has been established that a direct link exists between the formation history of star cluster populations and their host galaxies. However, our lack of understanding of the assembly of star cluster populations impedes our ability to use them as tracers
Hoyer Nils, Bonoli Silvia, Bastian Nate, Herrero-Carrión Diego, Neumayer Nadine, Izquierdo-Villalba David, Spinoso Daniele, Yates Robert M., Polkas Markos, Artale Maria Celeste   +9 more
doaj   +1 more source

IDCS J1426.5+3508: Cosmological implications of a massive, strong lensing cluster at Z = 1.75

, 2012
The galaxy cluster IDCS J1426.5+3508 at z = 1.75 is the most massive galaxy cluster yet discovered at z > 1.4 and the first cluster at this epoch for which the Sunyaev-Zel'Dovich effect has been observed. In this paper we report on the discovery with HST
Anthony H. Gonzalez, Arjun Dey, Ashby, Bartelmann, Bartelmann, Coe, Conor Mancone, Cosimo Fedeli, Dalal, Daniel Stern, Donahue, Eisenhardt, Eke, Enqvist, Gladders, Gonzalez, Greg Zeimann, Hennawi, Huang, Komatsu, Lee, Mark Brodwin, Meylan, Mullis, Navarro, Oguri, Peter R. M. Eisenhardt, Reddy, S. Adam Stanford, Tinker, Wambsganss, Wambsganss, Williamson, Wu, Zwicky   +34 more
core   +1 more source

The descendents of Lyman Break Galaxies in galaxy clusters: spatial distribution and orbital properties [PDF]

, 2000
We combine semi-analytical methods with a ultra-high resolution simulation of a galaxy cluster (of mass 2.3 10^14h-1Msolar, and 4 10^6 particles within its virial radius) formed in a standard CDM universe to study the spatial distribution and orbital ...
Adami C., B. Moore, Biviano A., Bower R. G., Cole S., F. Governato, Fontana A., G. Lake, J. Stadel, Kauffmann G., Lacey C., Madau P., Mellier Y., S. Ghigna, T. Quinn, Tormen G.   +15 more
core   +2 more sources

SPT-CL J2040−4451: AN SZ-SELECTED GALAXY CLUSTER AT z = 1.478 WITH SIGNIFICANT ONGOING STAR FORMATION [PDF]

, 2013
SPT-CL J2040−4451—spectroscopically confirmed at z = 1.478—is the highest-redshift galaxy cluster yet discovered via the Sunyaev–Zel'dovich effect.
M. Bayliss, M. Ashby, J. Ruel, M. Brodwin, K. Aird, M. Bautz, B. Benson, L. Bleem, L. Bleem, S. Bocquet, J. Carlstrom, C. Chang, C. Chang, H. Cho, A. Clocchiatti, T. Crawford, A. Crites, S. Desai, M. Dobbs, J. Dudley, R. Foley, R. Foley, W. Forman, E. George, D. Gettings, M. Gladders, Anthony H. Gonzalez, T. Haan, N. Halverson, F. W. High, G. Holder, W. Holzapfel, S. Hoover, J. Hrubeš, C. Jones, M. Joy, R. Keisler, L. Knox, Adrian T. Lee, Adrian T. Lee, E. Leitch, Jiayi Liu, M. Lueker, M. Lueker, D. Luong-Van, A. Mantz, D. Marrone, K. Mawatari, M. McDonald, J. McMahon, J. Mehl, J. Mehl, S. Meyer, E. Miller, L. Mocanu, J. Mohr, T. Montroy, S. Murray, S. Padin, S. Padin, T. Plagge, C. Pryke, C. Reichardt, A. Rest, J. Ruhl, B. Saliwanchik, A. Saro, J. Sayre, K. Schaffer, K. Schaffer, E. Shirokoff, E. Shirokoff, J. Song, B. Stalder, R. Suhada, H. Spieler, S. Stanford, S. Stanford, Z. Staniszewski, A. Stark, K. Story, C. Stubbs, A. V. Engelen, K. Vanderlinde, J. Vieira, A. Vikhlinin, R. Williamson, O. Zahn, A. Zenteno   +88 more
semanticscholar   +1 more source