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On a New Cluster of Nebulae in Pisces

Zwicky, F. (1937) On a New Cluster of Nebulae in Pisces. Proceedings of the National Academy of Sciences of the United States of America, 23 (5). pp. 251-256. ISSN 0027-8424.

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Introduction. - Clusters of nebulae represent the largest aggregations of matter known. It may be expected that an investigation of their distribution in space, of their composition and physical properties will throw new light on such problems as the determination of nebular masses [1], on the red shift of light from nebulae and on the evolution of stars and nebulae as well as the evolution of the universe as a whole. For these reasons it was thought desirable to undertake a more concentrated study of clusters of nebulae than hitherto attempted. The first step of this program consists in securing more complete data on the number and the distribution of groups of nebulae containing two, three or more members up to clusters of many hundred nebulae. The new 18-inch Schmidt telescope of the California Institute of Technology promises to be an ideal instrument for the investigation of groupings of nebulae brighter than the sixteenth magnitude.

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Additional Information:Copyright © 1937 by the National Academy of Sciences Communicated March 16, 1937 My sincere thanks are due to the observatory council of the California Institute of Technology for the use of the new Schmidt camera as well as for the provision of all the necessary working and living facilities at the new observatory site on Mt. Palomar. I am also greatly indebted to Dr. W. Baade who has given much of his time to teach me some elements of practical astronomy.
Issue or Number:5
Record Number:CaltechAUTHORS:ZWIpnas37b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5690
Deposited By: Archive Administrator
Deposited On:27 Oct 2006
Last Modified:02 Oct 2019 23:25

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