Chemical abundances of planetary nebulae (Costa+, 2004)

Physics

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Planetary Nebulae, Abundances: Peculiar

Scientific paper

The observations were carried out at two different observatories: at ESO/La Silla, and at LNA/Brazil. At ESO we used the 1.52m telescope and the Boller & Chivens Cassegrain spectrograph, in two observational runs: Dec./1999 and Dec./2000. at LNA, in Dec./1995, we used the 1.60 m telescope, a Boller & Chivens Cassegrain spectrograph and a combination grating+CCD. Table 1 gives the logbook of the observations and also the adopted distances d (kpc) to the Sun and galactocentric distances R (kpc).
(2 data files).

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