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Detection of an Extended Optical Halo around IC 418

Published online by Cambridge University Press:  19 July 2016

D. J. Monk ,
M. J. Barlow  and
R.E.S. Clegg
D. J. Monk
Affiliation:
Dept. of Physics and Astronomy, University College London
M. J. Barlow
Affiliation:
Dept. of Physics and Astronomy, University College London
R.E.S. Clegg
Affiliation:
Dept. of Physics and Astronomy, University College London

Abstract

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Two-dimensional long slit AAT IPCS spectra of IC 418 (in the 3400–4400 A wavelength region) show faint extensions in the [O II] 3726, 3729 A and Hγ emission lines out to at least 60 arcsec south and 50 arcsec north of the central star, compared to the angular radius of only 6 arcsec for the bright nebula.

Type
II. Nebular Properties
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 197
Copyright
Copyright © Kluwer 1989