Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...350..481s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 350, Feb. 20, 1990, p. 481-491.
Astronomy and Astrophysics
Astrophysics
30
Astronomical Photometry, Brightness, Cosmology, Space-Time Functions, Elliptical Galaxies, Galactic Clusters, Magnitude, Spiral Galaxies
Scientific paper
The surface brightness (SB) properties of E and S0 galaxies are presently studied over a range of absolute magnitudes in order to determine the intrinsic variation of SB at given M(Bt) values. This would establish the basis for an observational test of Tolman's (1930, 1940) prediction of a bolometric SB decrease as (1 + z) to the 4th in an expanding universe and 1 + z if redshifting is not due to expansion. The definition of the Petrosian (1976) eta parameter is set out as a practical operational procedure; the properties of the eta(r) function are illustrated for the Hubble, Oemler, de Vaucouleurs, and King SB-fitting templates for E-galaxies.
Perelmuter Jean-Marc
Sandage Allan
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