Fig. 8

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Line emission and optical images of IC 432. Cataloged as a reflection nebula, is revealed to also exhibit extended line emission in multiple lines, including [O II] and Hα (top row). The bright, blue reflection nebula is also seen to the east in optical Digitized Sky Surveys (DSS) red and blue imaging (bottom left), however, there is relatively low extinction inferred via the Balmer decrement (Hα/Hβ, bottom right). The central star, HD 37776 (cyan), is a magnetic chemically peculiar (helium-strong) star of spectral type B2V (Thompson & Landstreet 1985).
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