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Showing 1996 · astro-phShow all
2 papers · 2 filters
astro-ph1996★ 27 cited
Circumstellar C2, CN, and CH+ in the optical spectra of post-AGB stars
Eric J. Bakker, Ewine F. van Dishoeck, L. B. F. M. Waters +1
We present optical high-resolution spectra of a sample of sixteen post-AGB stars and IRC +10216. Of the post-AGB stars, ten show C2 Phillips and Swan and CN Red System absorption,…
astro-ph1996★ 1 cited
Lines of Circumstellar C2, CN, and CH+ in the Optical Spectra of Post-Agb Stars
Eric J. Bakker, David L. Lambert, Ewine F. van Dishoeck
Recent optical spectra of post-AGB stars show the presence of C2, CN, and CH+ originating in the circumstellar shell. We present here new, higher resolution spectra which provide c…