Photoelectric and CCD photometry of E and S0 galaxies

Details Photoelectric and CCD photometry of E and S0 galaxies Photoelectric and CCD photometry of E and S0 galaxies

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262..475c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 2, p. 475-490.

Astronomy and Astrophysics

Astronomy

29

Astronomical Photometry, Charge Coupled Devices, Electrophotometers, Elliptical Galaxies, Galactic Clusters, Distance, Magnitude, Red Shift

Scientific paper

We present BR photoelectric photometry for 352 E and S0 galaxies that are part of a large survey of the properties and peculiar motions of galaxies in distant clusters. Repeat measurements show our internal errors to be 2-3 percent in B and R and 1-2 percent in B-R. Comparisons of BR and BVR reductions for 10 galaxies also observed in V show small systematic errors due to differences between the spectral energy distributions of stars and galaxies. External comparisons with B-V colors in the literature confirm that these colors are good to 1 percent. We also describe R-band CCD observations for 95 of the galaxies and place these on a BR photometric system for photoelectric and CCD photomerry, with a common zero-point good to better than 1 percent. We find the rms precision of both our photoelectric and CCD R magnitudes to be 2-3 percent for galaxies as faint as R = 15.

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