Abstract
21-cm-line profiles of eleven open clusters and their immediate surroundings have been obtained showing line-emission of the clusters as well as that of the general galactic field. The expected profiles for the latter have been obtained in two, partially independent, ways, and substracted from the cluster profiles. The difference-profiles suggest in several cases the presence of interstellar neutral hydrogen gas within the cluster region. In a few cases the gas seems to expand with a velocity of about 7 km/sec. All clusters with an age of 2.5 · 107 years or less contain interstellar hydrogen gas while no clusters older than 1.5 · 108 years have detectable amounts of gas. The gas is found in a region which is, in the average, 3 to 4 times the apparent optical diameter.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1967 Springer Fachmedien Wiesbaden
About this chapter
Cite this chapter
Schwartz, R. (1967). Summary. In: Eine Bestimmung der 21-cm-Linienemission von elf offenen Sternhaufen. Forschungsberichte des Landes Nordrhein-Westfalen, vol 1844. VS Verlag für Sozialwissenschaften, Wiesbaden. https://doi.org/10.1007/978-3-663-07073-3_1
Download citation
DOI: https://doi.org/10.1007/978-3-663-07073-3_1
Publisher Name: VS Verlag für Sozialwissenschaften, Wiesbaden
Print ISBN: 978-3-663-06160-1
Online ISBN: 978-3-663-07073-3
eBook Packages: Springer Book Archive