Standard photometric diameters of galaxies. III - Reduction of the diameters in the ESO-B and SGC catalogues to the standard diameter system at the 25 mag/sq arcsec brightness level

Details Standard photometric diameters of galaxies. III - Reduction of the diameters in the ESO-B and SGC catalogues to the standard diameter system at the 25 mag/sq arcsec brightness level Standard photometric diameters of galaxies. III - Reduction of the diameters in the ESO-B and SGC catalogues to the standard diameter system at the 25 mag/sq arcsec brightness level

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...184...86p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 184, no. 1-2, Oct. 1987, p. 86-92.

Statistics

Computation

11

Astrometry, Astronomical Catalogs, Astronomical Photometry, Galactic Structure, Computational Astrophysics, Diameters, Galactic Evolution, Morphology

Scientific paper

The standard diameters in the D25 system derived in Papers I and II, augmented by newly determined diameters on ESO-B plates, are used to derive the transformation formulae needed to reduce the photographic diameters and axis ratios of galaxies in the ESO-B survey and the Southern Galaxy Catalogue (SGC) to the standard system. The approximate limiting isophotes in the two catalogues and their dependence on morphological type are determined. A time dependence of the limiting isophotal level is detected in the ESO-B lists, similar to that previously found and corrected in the SGC. No significant dependence on mean surface brightness is detected, at least in the small range covered by the standard galaxies.

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