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The results of a complex program of research on the extended infrared shell around the nebula NGC 6888 and the star WR 136 are presented. We performed Ha observations with a Fabry-Perot interferometer mounted at the focus of the 125-cm telescope and radio continuum (2.7 cm to 31 cm) and 21-cm HI observations with the RATAN-600 radio telescope. A thick expanding shell of neutral hydrogen 120 pc in diameter that immediately surrounds the extended infrared shell was detected. One of sections through the shell on declination +38.5 is represented on figure 1. ![]()
Figure 1. Curve passages in H I line through area NGC 6888.
The shaped line marks details surrounding IR-shell.
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