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  • 1980-1984  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Ultraviolet extinction towards far OB associations (1982)
    Springer
    Astrophysics and space science 87 (1982), S. 463-476 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Stars in the Aur OB-2 and Sco OB-1 associations, located in the direction of the galactic anticenter and center, respectively, have been observed for interstellar extinction. No effects due to changes of grain composition across such large distances are seen. A star exhibiting a peculiar extinction is found in each association. The properties of the responsible dust grains are discussed in terms of a two-component dust mixture: graphite and uncoated silicates. The column density both of graphite and silicate atoms are found to be higher than in stars of the same associations exhibiting a regular UV extinction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648937
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Far UV radiation transfer and H2CO lifetime in dense interstellar clouds (1981)
    Springer
    Astrophysics and space science 80 (1981), S. 173-187 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The UV radiation transfer within spherical interstellar dust clouds is analyzed using the method of successive scatterings. The results are used to determine the lifetime of interstellar H2CO against photo-destruction. The effectiveness of this process is compared with those of chemical mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649145
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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