SIMBAD references

The space distribution of stars of various types is investigated in a 1.5 square degree area at the Galactic equator (l = 146°, b = +2.6°) in Camelopardalis, in the direction of the association Cam OB3. The study is based on photometric classification, interstellar extinction and distance determination of 1303 stars down to 15.5 mag (in the violet). The limiting distance of the study is about 5 kpc, thus our line of sight crosses the Perseus and the Outer spiral arms. The space density of stars of different spectral types and the luminosity function are determined.