Radioastronomische Messungen der galaktischen Struktur und der Sternassoziation I Mon

1 The area between 168° ;;;:; 1 ;;;:; 180°, - 2° ;;;:; bI ;;;:; + 5°, containing the I Mon association, was investigated by a study of the 21-cm-line emission of HL The profiles were taken at discrete points with a distance of 1 ° in longitude and latitude; the receiver bandwidth being 30 kcps, the . resolving power of the receiver was 1. 5° K for an average profile used in the reduction. Following the technical reductions the final profiles were decomposed into Gaussian components by an iterative procedure. The results of this analysis is shown in fig. 3-10. Three spiral arms can be distinguished (fig. 11), all results 1 for 1