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- W116029726 abstract "We performed narrow band, optical line imaging of the planetary nebula NGC 7027 in sub-arcsecond seeing conditions. In all our filters, centered on Hα 6563, Hβ 4861, [NII] 6583, [OIII] 5007 lines and in a 6670/80 Hα continuum band, the nebula shows a complex clumpy structure whereas the central star is well resolved in the continuum band. Image analysis allows us to obtain a very accurate map of the local extinction down to A V = 5 and to estimate for the exciting source m V = 16.60 ± 0.15, leading to T * ≃ 220 000 K and L * ≃ 4 700L○.. Correcting our images for the extinction, the true annular structure of the planetary nebula is for the first time revealed at optical wavelengths. We can definitively confirm that the optical maximum corresponds to a hole in the dust distribution" @default.
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- W116029726 date "1993-12-01" @default.
- W116029726 modified "2023-09-23" @default.
- W116029726 title "High-resolution imaging of NGC 7027." @default.
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