A Caltech Library Service

Clusters of galaxies and the cosmic light


Shectman, Stephen Alan (1974) Clusters of galaxies and the cosmic light. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/APSH-4Q39.


Because galaxies cluster in space, the cosmic background light due to galaxies is not smoothly distributed on the night sky. Part I predicts spatial power spectra for the cosmic light fluctuations, based on the luminosity function for nearby galaxies and on the dumpiness of the galaxy distribution derived from galaxy counts. Part II describes a measurement of the spatial power spectrum of the cosmic light on a series of photographic plates taken with the Palomar 48-inch (122cm) Schmidt camera. This power spectrum is interpreted to provide a measure of the covariance of the galaxy distribution and the mean emissivity of galaxies in space.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Astronomy
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gunn, James E.
Group:Astronomy Department
Thesis Committee:
  • Unknown, Unknown
Defense Date:28 June 1973
Record Number:CaltechETD:etd-08252008-081823
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3219
Deposited By: Imported from ETD-db
Deposited On:09 Sep 2008
Last Modified:20 Dec 2019 19:59

Thesis Files

PDF (Shectman_sa_1974.pdf) - Final Version
See Usage Policy.


Repository Staff Only: item control page