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IC 2383



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An image database. II. Catalogue between δ=-30deg and δ=70deg.
A preliminary list of 68.040 galaxies was built from extraction of35.841 digitized images of the Palomar Sky Survey (Paper I). For eachgalaxy, the basic parameters are obtained: coordinates, diameter, axisratio, total magnitude, position angle. On this preliminary list, weapply severe selection rules to get a catalog of 28.000 galaxies, wellidentified and well documented. For each parameter, a comparison is madewith standard measurements. The accuracy of the raw photometricparameters is quite good despite of the simplicity of the method.Without any local correction, the standard error on the total magnitudeis about 0.5 magnitude up to a total magnitude of B_T_=17. Significantsecondary effects are detected concerning the magnitudes: distance toplate center effect and air-mass effect.

Redshifts for fainter galaxies in the first CfA survey slice. II
Redshifts were measured for 96 galaxies in right ascension alpha between8h and 17h declination delta between 30 and 31 deg, and with m(Zwicky)in the range 15.6-15.7. These correspond to 94 of the 96 entries in theZwicky-Nilson merged catalog. The declination range delta between 29 degand 31 deg is now complete to m(Zwicky) = 15.7. The structures in thefirst 6-deg-wide slice of the Center for Astrophysics redshift surveyslice (delta between 26.5 and 32.5 deg are clearly defined in the2-deg-wide slightly deeper sample; the fainter galaxies trace thestructures defined by the brighter ones.

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Observation and Astrometry data

Right ascension:08h29m41.40s
Aparent dimensions:0.589′ × 0.437′

Catalogs and designations:
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ICIC 2383

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