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  • 1
    Electronic Resource
    Electronic Resource
    Molecules in white dwarfs (1988)
    Springer
    Astrophysics and space science 147 (1988), S. 107-113 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Molecular dissociation equilibrium calculations were done for the model atmospheres of DA and non-DA white dwarfs. Our calculations show that He 2 + and HeH+ appear as most abundant molecules in the atmospheres of non-DA white dwarfs while H2 and H 2 + are most abundant molecules in DA white dwarfs. It is suggested that these molecules should be searched for in the atmospheres of white dwarfs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656610
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the possibility of faint molecular lines of PO, PH, MgH+, and CN in the solar spectrum (1988)
    Springer
    Solar physics 115 (1988), S. 221-227 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Equivalent width calculations for some electronic and vibration-rotation transitions of the molecules PO, PH, MgH+f, and CN have been carried out for a few umbral, photospheric, and facular model atmospheres. It appears that a few weak lines of these molecules might show up in the umbral spectrum. Le Blanc bands of CN are too weak for detection in the solar spectrum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148724
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    An analysis of spectrophotometric observations of comets Austin (1982g) and Bradfield (1980t) (1989)
    Springer
    Earth, moon and planets 47 (1989), S. 231-239 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Post-perihelion observed emission fluxes at 388 nm (CN) and 516 nm (C2) of the coma of comets Austin (1982g) and Bradfield (1980t) are analysed in the framework of the Haser model. Ratios of Haser model CN and C2 parent production rates with expansion velocity show that each comet behaves normally. For comet Austin (1982g), the Q CN/v and Q c2/v values decrease with increase of heliocentric distance of comet. For an assumed %; activity of the total spherical surface area of the nucleus, the water vaporization theory coupled with derived water production rates from the International Ultraviolet Explorer H and OH flux data yields a nuclear diameter of about 6 km for comet Austin (1982g). For comet Bradfield (1980t), the derived nuclear diameter is expected to be of about 1 km. In each comet, the dust mass production rates as well as ratio of dust-to-gas mass production rates decrease with increase of heliocentric distance of comet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00114102
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Cyanogen lines and facula models (1986)
    Springer
    Solar physics 106 (1986), S. 43-46 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Predicted equivalent widths and profiles of facular CN lines are used here as a diagnostic tool for different model atmospheres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00161352
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Vibration rotation bands of SiO in sunspots (1978)
    Springer
    Solar physics 56 (1978), S. 67-69 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The equivalent widths of P(51) and R(43) lines of the 1-0 and P(45) and R(56) lines of the 2-1 vibration rotation bands of SiO near 8 μm region, have been computed for Zwaan's (1974) sunspot model at the centre of the disc. The predicted equivalent widths suggest a possible presence of these SiO bands in the sunspot spectrum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00152633
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Molecules in the solar photosphere (1969)
    Springer
    Solar physics 7 (1969), S. 17-21 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A consideration of the dissociation equilibrium of diatomic molecules in the Utrecht Reference Photosphere leads us to conclude that SH, SiO, CS, HF and HCl may show up in enough concentrations in the solar atmosphere. The number above photosphere for these molecules is comparable with or more than that of MgH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148399
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  • 7
    Electronic Resource
    Electronic Resource
    The dependence of facula-photosphere contrast in molecular lines on dissociation energy (1969)
    Springer
    Solar physics 7 (1969), S. 370-376 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Assuming local thermodynamic equilibrium and the same relative abundances to prevail both in photosphere and faculae, the concentration-optical depth curves for molecules CH, NH, OH, C2, CN and CO have been obtained for the four combinations of two photospheric and two facular models and the relative excesses α of these molecules in the photosphere over those in faculae have been calculated. The change of photospheric model significantly affects the relationship, for a given facular model, between α and D 0, the dissociation energy of the molecule concerned. Besides, the average depth of formation in the facular models and photospheric models shows a relationship with D 0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00146142
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    Paper (German National Licenses)
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