Kameswara Rao, N; Sutaria, F. K; Murthy, J; Sriram, K; Mohan, Rekhesh; Ray, A
(EDP Sciences, 2018-01)
Context.
NGC 40 is a planetary nebula with diffuse X-ray emission, suggesting an interaction of the high-speed wind from WC8 cen-
tral star (CS) with the nebula. It shows strong C
IV
1550 Å emission that cannot be ...