Objects with extensive shells - an overview of the scientific program in Section Project A of the SFB 132

Details Objects with extensive shells - an overview of the scientific program in Section Project A of the SFB 132 Objects with extensive shells - an overview of the scientific program in Section Project A of the SFB 132

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975s%26w....14..329k&link_type=abstract

Sterne und Weltraum, vol. 14, Oct. 1975, p. 329-331. In German.

Astronomy and Astrophysics

Astronomy

Infrared Astronomy, Late Stars, Protostars, Stellar Envelopes, Stellar Evolution, Cosmic Dust, Giant Stars, H Ii Regions, Mira Variables, Planetary Nebulae, Research Projects, Variable Stars

Scientific paper

The paper describes some of the goals and plans of a study program devoted to stellar objects with extended features. Basically, this covers stars in an early stage of development (protostars, cocoon stars) and those in a late stage (red giants, Mira variables, planetary nebulae). New infrared equipment has been specially made available, since some of the objects of interest, in particular, protostars and cocoon stars, are observable principally in the IR range. IR observations of H II regions will concentrate on the Orion nebula and M 17. Studies of OH and H2O sources in the vicinity of H II regions are also planned. A systematic study of the YY Orion stars with photometric and spectroscopic observations in the visible range will be carried out. Theoretical works will be undertaken on the general physical problems related to extended shells, radiative transport in extended shells, the interaction of dust with gas and radiation, hydrodynamic model calculations for protostars, and cosmic masers.

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