ROSAT HRI observations of the filamentary wind blown bubble NGC 6888.

Details ROSAT HRI observations of the filamentary wind blown bubble NGC 6888. ROSAT HRI observations of the filamentary wind blown bubble NGC 6888.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..285w&link_type=abstract

International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 285 - 286

Astronomy and Astrophysics

Astrophysics

Interstellar Bubbles: Stellar Winds, Interstellar Bubbles: X Rays

Scientific paper

The authors obtained ROSAT HRI observations of the filamentary wind blown interstellar bubble NGC 6888 with a total exposure time of 122467 s. When smoothing the angular resolution to 25″FWHM to enhance the signal to noise ratio it was possible to identify 30 X-ray emitting clumps along the periphery of the optically visible shell. Roughly half of the clumps are still unresolved along their minor axes, and are thus smaller than ≡0.2 pc. Modeling the X-ray flux and surface brightness of evaporating clumps, it seems possible that the observed X-ray emission originates from the line of sight superposition of small (0.05 pc = 6″ evaporating cloudlets.

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