The SDSS DR6 luminosity functions of galaxies
نویسندگان
چکیده
منابع مشابه
Transformation of Morphology and Luminosity Classes of the Sdss Galaxies
We present a unified picture on the evolution of galaxy luminosity and morphology. Galaxy morphology is found to depend critically on the local environment set up by the nearest neighbor galaxy in addition to luminosity and the large scale density. When a galaxy is located farther than the virial radius from its closest neighbor, the probability for the galaxy to have an early morphological typ...
متن کاملDiscovery of Strong Lensing Clusters in the Sdss Dr6
We discovered strong gravitational lensing in 4 galaxy clusters by visual inspection of the Sloan Digital Sky Survey images in Data Release 6 (SDSS DR6). Two of them show the Einstein rings, and the other two show tangential giant arcs. These arcs or rings have large angle separations of > 8 from the bright central galaxies. The lensed images in general are bluer than cluster member galaxies. T...
متن کاملGalaxy Clusters Identified from the Sdss Dr6 and Their Properties
Clusters of galaxies in most previous catalogs have redshifts z ≤ 0.3. Using the photometric redshifts of galaxies from the Sloan Digital Sky Survey Data Release 6 (SDSS DR6), we identify 39,716 clusters in the redshift range 0.05 < z < 0.6 with more than eight luminous (Mr ≤ −21) member galaxies. Cluster redshifts are estimated accurately with an uncertainty less than 0.022. The contamination ...
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 کاملThe Mass and Luminosity Functions of Galaxies and their Evolution
We set up a model for the evolution of the galaxy luminosity function, taking advantage of recent work that brought in some better understanding of the mass function for gravitationally condensed objects. We add to this a simple model of star formation that reproduces the behaviour of the Tully-Fisher relation, in order to attach a luminosity to a massive halo with a given velocity dispersion. ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2009
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2009.15197.x