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  • ISM: dust  (2)
  • Springer  (2)
  • Cambridge University Press
  • 1
    Electronic Resource
    Electronic Resource
    Submillimetre continuum observations of pre-protostellar cores (1995)
    Springer
    Astrophysics and space science 224 (1995), S. 47-50 
    Details
    ISSN: 1572-946X
    Keywords: stars: formation ; ISM: dust
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results are outlined of a JCMT submillimetre continuum survey of Myers cores that have no known infrared associations - the so-called ‘starless cores’. Detailed parameters are calculated, such as temperature, mass, luminosity and radial density dependence. On the basis of lifetime and luminosity arguments, the cores are found to be pre-protostellar in nature, undergoing the ambipolar diffusion phase prior to protostellar collapse. The cores do not follow the r−2 density dependence predicted by the standard model, but are consistent with a recent model of magnetic support of cloud cores.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00667819
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dust and gas in W49A (1995)
    Springer
    Astrophysics and space science 224 (1995), S. 431-432 
    Details
    ISSN: 1572-946X
    Keywords: circumstellar matter ; stars:formation ; ISM: dust
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have mapped the high-mass star-forming region W49A at 450, 800, and 1100 microns with the JCMT. Spectral index measurements suggest an increase in temperature towards the emission peaks, consistent with previous data. We derive the gas masses associated with the central and extended emission from each of the three components, and find a deficit of gas around W49SW. The mass found for the core of W49N is in good agreement with the value previously derived from C34S (5-4) maps (Serabynet al., 1993), and similar morphologies are found in the line and continuum maps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00667891
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    Paper (German National Licenses)
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