Fig. 5.
Top two images: synthetic Hα emission maps of the bow shock on a logarithmic colour scale (in units of erg cm−2 s−1 arcsec−2), generated from the 1b simulation for viewing angles of 45° and 60°. Both synthetic images are generated after 0.2135 Myr of evolution. The coordinates are in parsecs relative to the position of the star. The black cross shows the position of the ionizing star. Bottom plot: HST Hα (656 nm) image of the Bubble Nebula.
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