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Morphological and physical characteristics of the Virgo Cluster - First results from the Las Campanas photographic surveyPreliminary results are presented of a photographic survey of the Virgo cluster to the faintest convenient limit of the Las Campanas du Pont 2.5 m reflector, performed in order to study the complexity of both the surface and velocity distributions within the central 6 degree radius region. The survey is described and the resulting Catalog is discussed, and the frequency of galaxy types found and listed in the Catalog is described. The physical properties of the dwarfs are summarized, and luminosity functions are given separately for each morphological type. The progressive change of (MBT) faintward along the morphological sequence from Sc I through Sm and Im types is shown, leading to a calibration of the de Vaucouleurs Lambda luminosity index and a determination of its intrinsic dispersion. The preliminary results on the distribution of galaxies of all types in the two principal subclustering regions found are summarized, and the velocity distributions over the face of the 6 degree core are discussed for the various galaxy types.
Document ID
19860052635
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sandage, A.
(Mount Wilson and Las Campanas Observatories Pasadena, CA, United States)
Binggeli, B.
(Mount Wilson Observatory Pasadena, CA, United States)
Tammann, G. A.
(Basel, Universitaet Binningen, Switzerland)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Subject Category
Astrophysics
Accession Number
86A37373
Distribution Limits
Public
Copyright
Other

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