High resolution radio and optical observations of NGC 6888

Details High resolution radio and optical observations of NGC 6888 High resolution radio and optical observations of NGC 6888

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....42..173w&link_type=abstract

Astronomy and Astrophysics, vol. 42, no. 2, Aug. 1975, p. 173-185. NSF-supported research.

Astronomy and Astrophysics

Astrophysics

73

Astronomical Maps, Galactic Radiation, Hot Stars, Nebulae, Radio Spectra, Electron Density (Concentration), Filaments, Radio Stars, Relief Maps, Spectrum Analysis, Stellar Radiation, Wolf-Rayet Stars

Scientific paper

NGC 6888 is a filamentary nebulosity associated with the Wolf-Rayet star HD 192163. Maps are presented with a resolution of 5 arcmin at 11 cm and better than 1.5 arcmin at the H-alpha frequency, 6 cm, 21 cm, and 49 cm (continuum). There is a smooth component to the H-alpha radiation which presumably originates from gas between the filaments. From a comparison of the line and continuum intensities, it is found that the smooth component has essentially the same temperature as the filaments. The mechanism by which the filaments are created and maintained is not clear.

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