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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 217 (1994), S. 121-130 
    ISSN: 1572-946X
    Keywords: AGB stars ; Magellanic Clouds ; carbon stars ; OH/IR stars ; long period variables ; Cepheids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The stars that will be detectable in the Magellanic Clouds by the DENIS and 2MASS near infrared surveys are enumerated. All thermally-pulsing AGB stars will be observable in I, J, H and K, along with the top two magnitudes of both the early-AGB and the first giant branch. All carbon stars will be visible, and normal (N type) C stars will be easily distinguished by their large J-K colours. However, it will not be possible to separate faint, warm C stars from K and M stars using the photometry alone. Photometry of AGB stars in clusters will allow an accurate evaluation of the AGB tip luminosities as a function of initial mass. Random phase K magnitudes of LPVs and Cepheids should provide a better measure of the LMC tilt and distortions in the SMC. The K survey should turn up 100 to 150 objects undergoing superwind mass loss, these objects being OH/IR stars and the dust-enshrouded C star equivalents of OH/IR stars. It is shown that crowding should not be a problem even in the LMC bar.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 12
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 7 (1978), S. 9-11 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The Mn Kβ1,3, Kβ′ X-ray emission peak profile varies in a characteristic way with the valency of manganese, Proviede that the ligand-atom environment remains contant. Kβ′ becomes mopre prominent as the oxidation state is reduced. XRF nanalysis of geological sample can, therefore, be easily extended to include a determination of the predominant valence state of any manganese present.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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