The diameter-luminosity relation for elliptic and lenticular galaxies

Details The diameter-luminosity relation for elliptic and lenticular galaxies The diameter-luminosity relation for elliptic and lenticular galaxies

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...42...69b&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 42, Oct. 1980, p. 69-79. In French.

Astronomy and Astrophysics

Astrophysics

2

Diameters, Elliptical Galaxies, Galactic Clusters, Galactic Radiation, Galactic Structure, Luminosity, Astrophysics, Electrophotometers

Scientific paper

The total B magnitudes and isophotal diameters were obtained for 61 E and S0 galaxies of the Coma cluster central region from photoelectric observations and isophotometry of a Schmidt plate. These results were used to determine the exponent in the diameter-luminosity relation which can lead to estimates of the distance modulus of galaxies by an expression in terms of absolute luminosity, linear diameter, the apparent magnitude, and isophotal diameter corrected for galactic absorption and inclination effects. It was found that the system of diameters corresponds to the brightness level of 22.5 mag/sq arcsec; the photoelectric B magnitudes are transformed to the asymptotic magnitudes from a magnitude-aperture relation deduced from the measurements.

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