Image of Galaxies data-base II. (Garnier+ 1996)

Details Image of Galaxies data-base II. (Garnier+ 1996) Image of Galaxies data-base II. (Garnier+ 1996)

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..41170467g&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/117/467. Originally published in: 1996A&AS..117..467G

Computer Science

Galaxy Catalogs

Scientific paper

A preliminary list of 68.040 galaxies was built from extraction of 35.841 digitized images of the Palomar Sky Survey (Paper I, 1996A&A...311...12P). For each galaxy, the basic parameters are obtained: coordinates, diameter, axis ratio, total magnitude, position angle. On this preliminary list, we apply severe selection rules to get a catalog of 28.000 galaxies, well identified and well documented. For each parameter, a comparison is made with standard measurements. The accuracy of the raw photometric parameters is quite good despite of the simplicity of the method. Without any local correction, the standard error on the total magnitude is about 0.5 magnitude up to a total magnitude of BT=17. Significant secondary effects are detected concerning the magnitudes: distance to plate center effect and air-mass effect. The description of the construction of the catalog is given in Paturel et al. 1996 and Garnier et al. 1996. Galaxies are detected on POS-I and cross-identified with galaxies from the LEDA database (http://www-obs.univ-lyon1.fr/leda/) (1 data file).

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