Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195..255g&link_type=abstract
Astrophysical Journal, vol. 195, Jan. 15, 1975, pt. 1, p. 255-268.
Astronomy and Astrophysics
Astrophysics
244
Astronomical Photometry, Big Bang Cosmology, Galactic Clusters, Hubble Diagram, Red Shift, Spectrophotometry, Astronomical Catalogs, Astronomical Spectroscopy, Elliptical Galaxies, Galactic Evolution, Quasars, Tables (Data)
Scientific paper
New spectrophotometric data are presented for large-redshift galaxies in clusters. A new approach to aperture corrections and the analysis of the Hubble diagram is outlined, including the explicit incorporation of evolutionary effects. The importance of selection effects on the usual methods of analysis are in principle overcome in the analysis, although the heterogeneity of the sample still makes conclusions about cosmology slightly suspect. Formal values of the deceleration parameter are derived under several sets of assumptions, yielding results between +0.33 and -1.27 with formal standard deviations of order 0.7.
Gunn James E.
Oke Bev J.
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