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Arm structure in normal spiral galaxies, 1: Multivariate data for 492 galaxiesMultivariate data have been collected as part of an effort to develop a new classification system for spiral galaxies, one which is not necessarily based on subjective morphological properties. A sample of 492 moderately bright northern Sa and Sc spirals was chosen for future statistical analysis. New observations were made at 20 and 21 cm; the latter data are described in detail here. Infrared Astronomy Satellite (IRAS) fluxes were obtained from archival data. Finally, new estimates of arm pattern radomness and of local environmental harshness were compiled for most sample objects.
Document ID
19950033236
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Magri, Christopher
(Cornell Univ. Ithaca, NY, United States)
Date Acquired
August 16, 2013
Publication Date
September 1, 1994
Publication Information
Publication: The Astronomical Journal
Volume: 108
Issue: 3
ISSN: 0004-6256
Subject Category
Astronomy
Accession Number
95A64835
Funding Number(s)
CONTRACT_GRANT: JPL-957289
Distribution Limits
Public
Copyright
Other

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