COMMUNICATIONS / MITTEILUNGEN
Space Distribution of Stars in a Region of Cepheus around NGC 7160
No. 79
Budapest, 1982
Abstract
Objective prism spectral types and photographic U, B, V magnitudes have been
determined for 1810 stars in a region of 19.5 square degrees of Cepheus
centered on the galactic cluster NGC 7160. A catalogue of data together with
identification charts is given. The magnitude limit is approximately V= 12.5.
The field contains a part of the supposed older subsystem of the association
Cepheus OB2. The interstellar absorption in the region is smooth. The visual
absorption is 1.0 mag. at the distance of the association for the northern
part of the field, and is about 1.4 mag. for the southern part. Space
densities of the stars have been computed as a function of spectral type and
distance from the sun. Concentrations of B and early A type stars are found
at 800 pc from the sun. Concentrations of B and early A type stars are found
at 800 pc, and an attempt was made to derive the shape of the luminosity
function of the association subgroup.
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