We identified a large expanding HI shell around the Cas OB5 analyzing Leiden/Dwingeloo HI data. With the help of objects apparently associated with the bubble, we could estimate a distance of 2.5 kpc and we determined the main characteristics of the shell. Model calculations have shown that Cas OB5 had the power to form the observed structure in its neighbourhood.
Publications of the Astronomy Department of the Eotvos Lorand University
- Pub Date:
- May 2002