... Its graphic interface is quite simple: it is organized in a main menu with several options to set the necessary ac quisition parameters and to start the different operations (data acqui sition, display of data, reinitialization of the devices etc.) ... That is, the user has not to spent the observing time to learn how to use the control program and to execute the different procedures but should have the flexible way to control the observing process. ...
... Printed in U.S.A. A MEASUREMENT OF GALAXY CLUSTER SIZES, RADIAL PROFILES, AND LUMINOSITY FUNCTIONS FROM SDSS PHOTOMETRIC DATA Sarah M. Hansen, 1, 2 Timothy A. McKay,3 Risa H. Wechsler, Erin Scott Sheldon,2 and Amy Kimball6 Received 2004 October 20; accepted 2005 July 3 1, 2, 4 James Annis, 5 ABSTRACT Imaging data from the Sloan Digital Sky Survey are used to measure the empirical size-richness relation for a large sample of galaxy clusters. ... Mass is the key defining attribute of a galaxy cluster....
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Ссылки http://www.atnf.csiro.au/people/Amy.Kimball/Publications/hansen_et_al_2005.pdf -- 724.6 Кб -- 02.10.2013 Похожие документы