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astro-ph2000
A radio-continuum and photoionization-model study of the two planetary nebulae in the Sagittarius dwarf galaxy
G. Dudziak, D. Pequignot, A. A. Zijlstra +1
Radio continuum observations at 1.4, 4.8 and 8.6 GHz of the two Planetary Nebulae (PNe) in the Sagittarius dwarf galaxy reveal the elongated shape of Wray 16-423 and the extreme co…
astro-ph2000
Third-dredge-up oxygen in planetary nebulae
D. Pequignot, J. R. Walsh, A. A. Zijlstra +1
The planetary nebulae He 2-436 and Wray 16-423 in the Sagittarius dwarf galaxy appear to result from nearly twin stars, except that third-dredge-up carbon is more abundant in He 2-…