The stellar content of brightest cluster galaxies
نویسندگان
چکیده
منابع مشابه
The stellar content of brightest cluster galaxies
We present near-infrared K-band spectroscopy of 21 elliptical or cD Brightest Cluster Galaxies (BCGs), for which we have measured the strength of the 2.293 µm CO stellar absorption feature. We find that the strength of this feature is remarkably uniform among these galaxies, with a smaller scatter in equivalent width than for the normal elliptical population in the field or clusters. The scatte...
متن کاملStellar populations in the centres of brightest cluster galaxies
This paper is part of a series devoted to the study of the stellar populations in brightest cluster galaxies (BCGs), aimed at setting constraints on the formation and evolution of these objects. We have obtained high signal-to-noise ratio, long-slit spectra of 49 BCGs in the nearby Universe. Here, we derive Single Stellar Population (SSP)-equivalent ages, metallicities and α-abundance ratios in...
متن کاملXMM cluster survey: the build up of stellar mass in brightest cluster galaxies at high redshift
We present deep Jand Ks-band photometry of 20 high redshift galaxy clusters between z = 0.8 and 1.5, 19 of which are observed with the MOIRCS instrument on the Subaru telescope. By using near-infrared light as a proxy for stellar mass we find the surprising result that the average stellar mass of Brightest Cluster Galaxies (BCGs) has remained constant at ∼9 × 10 M⊙ since z ∼ 1.5. We investigate...
متن کاملThe Origin of the Brightest Cluster Galaxies
Most clusters and groups of galaxies contain a giant elliptical galaxy in their centres which far outshines and outweighs normal ellipticals. The origin of these brightest cluster galaxies is intimately related to the collapse and formation of the cluster. Using a large cosmological N-body simulation of cluster collapse, we show how hierarchical merging naturally produces a giant, central ellip...
متن کاملThe Globular Cluster Luminosity Functions of Brightest Cluster Galaxies
A new technique for studying globular cluster populations around relatively distant galaxies is developed and applied to a sample of 23 galaxies in 19 Abell clusters. The technique is based on the surface brightness fluctuations method of determining galaxy distances. The galaxies in this sample range in redshift from 5000 to 10,000 km s1, and were selected from the Lauer & Postman (1994) surve...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2000
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2000.03474.x