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September 1983
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5 Reads
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1 Citation
Astronomy and Astrophysics
A method for surface photometry of galaxies and nebulae on ordinary Sky Atlas Schmidt plates or films is presented. Microphotometric measurements of stellar images are used to calibrate the photographic characteristic curves. The method is applied to the galaxy NGC 253 with an accuracy better than + or -0.2 m. Isophotal contour maps and luminosity profiles for the galaxy are shown.
... currently popular use of sensitometric spots has drawbacks too (e.g., Agnelli et al. 1979, Walterbos andKennicut 1987). The methods of Kormendy 1973, Agnelli et al. 1979, and Feitzinger et al. 1983 depend on the profiles of field stars. Simultaneous photoelectric photometry is often needed, and Feitzinger et al. 1983 show that morphology of type II detections is not easily achieved. ...
September 1983
Astronomy and Astrophysics
