Band 423
21 cm - Untersuchungen zur Struktur und Dynamik der Milchstraße zwischen 100° und 120° galaktischer Länge
Aus der Reihe
Forschungsberichte des Landes Nordrhein-Westfalen
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- Taschenbuch ausgewählt
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Sprache:Deutsch
Fr. 74.90
inkl. gesetzl. MwSt.,
Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
01.01.1960
Abbildungen
79 S. 80 Abb.
Verlag
VS Verlag für SozialwissenschaftenSeitenzahl
79
Maße (L/B/H)
29.7/21/0.6 cm
Gewicht
244 g
Auflage
1960
Sprache
Deutsch
ISBN
978-3-663-00376-2
The presented 21 cm-observations consist of 61 line profiles of points 0 0 0 0 0 between 100 and 120 galactic length at + 2 , 0 , - 2 galatic lati tude each measured about three times. The whole calibrated results, reduced to the local standard of rest, are compiled in the second appendix. The reduction of these temperature-profiles for statistical motions of HI-clouds was performed by an additive analysis for gaussian components. Table 1 contains the parameters of all components of the whole program. The standard deviation mainly varies between a = 4,6 to 6,3 km/sek. Using the dates for optical depth and internal statistical motions of an individual cloud found by absorption measurements from MULLER (1957), a figure ~ was derived from the area of each Gauss component, which is a measure for the coverage of the antenna-main lobe with clouds. Further from this an average for the density of HI-atoms is derived for each component. The velocities of the components (group-motions of the clouds) are plotted against the galactic length in Fig. 14 and 15. Using the model of M. SCHMIDT (1956) the curves for constant distance r from the sun are drawn into this diagram. But a careless conversion of the measured velocities into polar-coordinates r,l would bring strange radial struc tures. This leads to the conclusion that the motions are not fully caused by differential rotation. The observed peculiar motions range from 8 to 15 km/sek.
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