Possible evidence for a correlation between color and flattening of elliptical galaxies

Details Possible evidence for a correlation between color and flattening of elliptical galaxies Possible evidence for a correlation between color and flattening of elliptical galaxies

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230l.161v&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 230, June 15, 1979, p. L161, L162.

Mathematics

Logic

11

Astronomical Photometry, Electrophotometry, Elliptical Galaxies, Galactic Structure, Ultraviolet Spectra, Frequency Distribution, Morphology, Ultraviolet Photometry

Scientific paper

Sandage and Visvanathan (1978) in their recently published extensive photoelectric photometry of elliptical galaxies have found an intrinsic dispersion of about 0.10 mag in the u-V colors of the galaxies (reduced to the same absolute magnitude). The purpose of the present paper is to inquire whether this intrinsic dispersion might correlate with ellipticity, which is the only obvious morphological variable among elliptical galaxies. It is found that the u-V photometry of Sandage and Visvanathan provides marginal evidence for the suggestion that ellipticals of types E0-E2 are, in the mean, slightly redder than are those of types E4-E7.

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