Buscar
Mostrando ítems 11-20 de 6939
The assembly of early-type galaxies: combining clustering and luminosity function measurements
(2011)
We present a study of the evolution of early-type galaxies (ETGs) that combines luminosity funciton and clustering measurements. The latter allows us to infer the typical dark-matter halo mass of the hosts of the galaxies. ...
Low X-Ray Luminosity Galaxy Clusters. IV. SDSS galaxy clusters at z < 0.2
(Wiley Blackwell Publishing, Inc, 2019-06)
This is the fourth of a series of papers on low X-ray luminosity galaxy clusters. The sample comprises 45 galaxy clusters with X-ray luminosities fainter than 0.7 × 1044 erg s.1 at redshifts lower than 0.2 in the regions ...
Upper limits on the total cosmic-ray luminosity of individual sources
(Institute of Physics - IOPBristol, 2014-07)
In this paper, upper limits on the total luminosity of ultra-high-energy cosmic-rays (UHECR) E > '10 IND. 18'eV) are determined for five individual sources. The upper limit on the integral flux of GeV-TeV gamma-rays is ...
Luminosity functions of LMXBs in different stellar environments
(2011)
Aims. Based on the archival data from the Chandra observations of nearby galaxies, we study different sub populations of low-mass X-ray binaries (LMXBs) – dynamically formed systems in globular clusters (GCs) and in the ...
Introducing the photometric maximum likelihood method: galaxy luminosity functions at z < 1.2 in MUSYC-ECDFS
(2009)
We present a new maximum likelihood method for the calculation of galaxy luminosity functions from multi-band photometric surveys without spectroscopic data. The method evaluates the likelihood of a trial luminosity function ...