The previous report on structure and dynamics of the galactic system was given by Wielen (41.155.100). The recently recommended values for solar distance to the galactic center (8.5 kpc) and our rotation speed around it (220 km.s-1) were discussed by Trimble (42.155.043).The distance scale of the Galaxy was reviewed by Barkhatovaet al. (40.155.088). A discussion of typical corrugation scales in the Galaxy was given by Spicker and Feitsinger (42.155.003), who concluded that three distinct scales seem to exist: 1-2 kpc, 4-8 kpc, and > 13 kpc. These corrugations are reflected in the distribution of O and B-stars and HII regions, and to a lesser extent in the HI distribution. Feitzinger and Spicker (39.155.026) investigated the corrugation phenomenon for the (heliocentric) longitude range 10° ≤ l ≤ 240° as derived from HI studies.
Neon Abundances in B Stars of the Orion Association: Solving the Solar Model Problem?