Photometry Of Galaxies In An Extremely Distant Cluster

D. Nanni; G. Pittella; D. Trevese; A. Vignato

doi:10.1117/12.959801

21 November 1980 Photometry Of Galaxies In An Extremely Distant Cluster

D. Nanni, G. Pittella, D. Trevese, A. Vignato

Proceedings Volume 0264, Applications of Digital Image Processing to Astronomy; (1980) https://doi.org/10.1117/12.959801
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States

Abstract

Results concerning the U, B and V photometry of some galaxies in the cluster Zw 1305.4+ 2941 are presented. The cluster has a redshift of 0.24 and the photometry is referred to galaxies which are inside a region of radius 1.2 Mpc from the cluster center. To obtain these resutis an automated reduction procedure was applied to the microdensitometer data obtained scanning a region of Palomar 48" plates. These procedures include : a) a segmentation process, b) a smoothing, ca calibration of the plates using standard stars profiles and magnitudes, d) star-galaxy classification.

Citation Download Citation

D. Nanni, G. Pittella, D. Trevese, and A. Vignato "Photometry Of Galaxies In An Extremely Distant Cluster", Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); https://doi.org/10.1117/12.959801

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