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  • 1
    Electronic Resource
    Electronic Resource
    Fine Structure of Nebular Emission Lines (1970)
    [s.l.] : Nature Publishing Group
    Nature 228 (1970), S. 44-44 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In particular Hoc is composed of four components. Kent et al.*, Lewis and Spedding4 and Spedding et al.5 showed experimentally, for a laboratory source, that only the two principal components, of nearly equal brightness, were significant. They are separated by 0-14 A. Sommer-feld and Unsold6'7 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/228044a0
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  • 2
    Electronic Resource
    Electronic Resource
    Filamentary Nebulosity in the Vicinity of the Cetus Arc (1965)
    [s.l.] : Nature Publishing Group
    Nature 208 (1965), S. 575-576 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The radio continuum emission from these features is-identical to that from the old supernova remnants. However, the nature of the 60 diameter loop is complicated by its correlation with twelve high-velocity neutral hydrogen clouds4. It has therefore been suggested that two, if not the third, of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/208575b0
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  • 3
    Electronic Resource
    Electronic Resource
    Correlation between the Twelve High-velocity Neutral Hydrogen Clouds and a Feature of the Sky in the Radio Continuum (1965)
    [s.l.] : Nature Publishing Group
    Nature 207 (1965), S. 179-180 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. This figure shows the three radio continuum loops as thick continuous lines. The high-velocitv neutral hydrogen clouds are shown as open circles containing a point. The velocities of these clouds are given in kilometres per sec. All further positions considered in the search for neutral ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/207179a0
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  • 4
    Electronic Resource
    Electronic Resource
    Speckle observations of the nucleus of NGC1068 (1982)
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 331-333 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] NGC1068 is an Sb spiral galaxy1 with a Seyfert nucleus2 which is at distance3 of 16Mpc (assuming H0 = 75 kms"1 Mpc-1). Several observers3"6 have studied the broad (-1,450 km s"1) [Om] emission lines from the central (-300pc diameter) regions. There are at least four distinct clouds with separate ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/296331a0
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  • 5
    Electronic Resource
    Electronic Resource
    Circumstellar shocks (1995)
    Springer
    Astrophysics and space science 233 (1995), S. 1-10 
    Details
    ISSN: 1572-946X
    Keywords: Shocks ; Circumstellar Medium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The presence of shocks in a wide variety of circumstellar phenomena will be illustrated and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00627325
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  • 6
    Electronic Resource
    Electronic Resource
    An astronomical Fabry-Pérot interferometer (1968)
    Springer
    Astrophysics and space science 1 (1968), S. 20-31 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A description is given of an improved version of Flynn's photo-electric, pressure-scanning, Fabry-Pérot (F.-P.) interferometer which has been built for the purpose of studying line emission from diffuse gaseous nebulae. A discussion of the results obtained, and their reduction, is to be given in subsequent papers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653844
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  • 7
    Electronic Resource
    Electronic Resource
    Filter and interferometer observations of twoHii regions (1968)
    Springer
    Astrophysics and space science 1 (1968), S. 230-238 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Rosette Nebula was photographed through filters isolating the Hα,OII andOIII nebular emission lines. Isophotes were constructed at these wavelengths. Measurements of the radial velocity differences across the Rosette were obtained from an interferogram. These were compared to some conflicting measurements made by previous authors. Some small regions in the Rosette and Barnard's Arc were shown to be emitting lines wider than the bulk of the matter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00717919
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  • 8
    Electronic Resource
    Electronic Resource
    An investigation of a peculiar nebula in monoceros (1968)
    Springer
    Astrophysics and space science 1 (1968), S. 278-283 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A faint nebula, between the Rosette and NGC 2264, appears to be a supernova remnant. This was photographed with long exposures through narrow filters centred on the bright nebular emission lines. Interferograms were also taken. These revealed extensive regions emitting broad lines, and showed that the nebula did not have the large expansion velocity that was expected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656001
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  • 9
    Electronic Resource
    Electronic Resource
    Circumstellar matter in the symbiotic binary CH cyg during its current outburst (1995)
    Springer
    Astrophysics and space science 224 (1995), S. 559-560 
    Details
    ISSN: 1572-946X
    Keywords: stars: individual: CH Cyg ; binaries: symbiotic - spectra: line profiles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present optical high-resolution spectroscopy and UBV photometry of the symbiotic binary CH Cyg during the current outburst which began in 1992 February.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00667954
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  • 10
    Electronic Resource
    Electronic Resource
    Observational tests of the Interacting Winds Model of Planetary Nebulae (1996)
    Springer
    Astrophysics and space science 245 (1996), S. 219-231 
    Details
    ISSN: 1572-946X
    Keywords: Planetary nebulae:individual:NGC650-1,NGC40 ; hydrodynamics ; kinematics and dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Numerical simulations of the evolution of Planetary Nebulae (PNe) based on the Interacting Stellar Winds models have become highly sophisticated, producing synthetic images and spectra in a number of prominent emission lines at high spatial and spectral resolution. The success of these models in producing synthetic images which closely resemble many observed nebulae is well documented. The number of PNe which have been investigated spectroscopically with good spatial coverage and high spatial and spectral resolution is relatively small and therefore in many cases the synthetic spectra predicted by the numerical models have not been directly compared to observed spectra. Here we consider some recent results from two PNe and compare them to model results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00642227
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