Results 151 to 160 of about 89,392 (297)

Brightest cluster galaxies as standard candles

The Astrophysical Journal, 1995
We investigate the use of brightest cluster galaxies (BCGs) as standard candles for measuring galaxy peculiar velocities on large scales. We have obtained precise large-format CCD surface photometry and redshifts for an all-sky, volume-limited (z less than or = 0.05) sample of 199 BCG. We reinvestigate the Hoessel (1980) relationship between the metric
Marc Postman, Tod R. Lauer
openaire   +1 more source

PEARLS: Globular Clusters and Ultracompact Dwarfs in the El Gordo Galaxies at z = 0.87

The Astrophysical Journal
JWST/NIRCam 0.9 to 2.0 μ m images reveal a population of point sources around the major galaxies in the El Gordo cluster at redshift z = 0.87. Their distribution in the color–magnitude diagrams shows a narrow sequence well separated from field-galaxy ...
William E. Harris, Marta Reina-Campos, Anton M. Koekemoer, Jessica M. Berkheimer, Timothy Carleton, Seth H. Cohen, Brenda L. Frye, Tyler R. Hinrichs, Benne W. Holwerda, Rachel Honor, Massimo Ricotti, S. P. Willner, Rogier A. Windhorst, Haojing Yan   +13 more
doaj   +1 more source

Discrepancies between JWST Observations and Simulations of Quenched Massive Galaxies at z > 3: A Comparative Study with IllustrisTNG and ASTRID

The Astrophysical Journal
Recent JWST observations have uncovered an unexpectedly large population of massive quiescent galaxies at z  > 3. Using the cosmological simulations IllustrisTNG and ASTRID , we identify analogous galaxies and investigate their abundance, formation ...
Emma Jane Weller, Fabio Pacucci, Yueying Ni, Lars Hernquist, Minjung Park   +4 more
doaj   +1 more source

The alignment between brightest cluster galaxies and host clusters

, 2022
Z. S. Yuan, Z. L. Wen
openalex   +2 more sources

Selecting Clusters and Protoclusters via Stellar Mass Density. II. Application to HSC-SSP Observations

The Astrophysical Journal
We present a selection of candidates of clusters and protoclusters of galaxies identified in the photometric data of the HSC-SSP Wide Public Data Release 3 (PDR3), spanning the redshift range 0.1 ≤ z ≤ 2. The selection method, detailed in Vicentin et al.,
Marcelo C. Vicentin, Laerte Sodré Jr., Michael A. Strauss, Erik V. R. de Lima, Pablo Araya-Araya   +4 more
doaj   +1 more source

WISDOM project – VIII. Multiscale feedback cycles in the brightest cluster galaxy NGC 0708 [PDF]

, 2021
Eve V North, Timothy A. Davis, Martin Bureau, M. Gaspari, Michele Cappellari, Satoru Iguchi, Lijie Liu, Kyoko Onishi, M. Sarzi, M. Smith, Thomas G. Williams   +10 more
openalex   +1 more source

Brightest Cluster Galaxies & Cooling Flows [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractIn the absence of any form of feedback heating, the gas in the central regions of massive relaxed cluster should cool and initiate a cooling flow. The presence/efficiency of an additional heating and the ultimate fate of the cooling gas is the subject of an extensive debate.
openaire   +1 more source

CHANDRA OBSERVATION OF ABELL 1142: A COOL-CORE CLUSTER LACKING A CENTRAL BRIGHTEST CLUSTER GALAXY? [PDF]

, 2016
Yuanyuan Su, David A. Buote, Fabio Gastaldello, Reinout van Weeren   +3 more
openalex   +1 more source

Recent Formation of a Spiral Disk Hosting Progenitor Globular Clusters at the Center of the Perseus Brightest Cluster Galaxy. II. Progenitor Globular Clusters [PDF]

, 2022
Jeremy Lim, Emily Wong, Youichi Ohyama, Michael C. H. Yeung   +3 more
openalex   +1 more source

Spectral variations in brightest cluster galaxies

The Astrophysical Journal, 1978
Multichannel-spectrometer scans of 56 of the brightest galaxies in faint clusters have been examined for evidence of color evolution. The dispersion introduced into the sample by some 25% of the galaxies which have unusual spectra is shown to be sufficient to obscure evolutionary variations.
A. Wilkinson, J. B. Oke
openaire   +1 more source