Structure of the Hyades Cluster

Extract

H. A. Pels and J. H. Oort have discussed the results of a search for fainter Hyades that had been made by G. Pels. The search extended over a region of about 15° radius around the Hyades centre. It was made from proper motions determined from a comparison of Astrographic Catalogue positions with those on plates taken with the 34-cm Leiden refractor. The data extend to about 13^m. In part of the field comparisons were also made with plates taken for the Astrographic Charts, in order to extend the luminosity distribution to somewhat fainter magnitudes.