Chemical abundances and masses of the haloes around the planetary nebulae NGC 6543 and NGC 6826

Bibcode
1989A&A...222..219M
Manchado, A.; Pottasch, S. R.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 222, no. 1-2, Sept. 1989, p. 219-226.

Advertised on:
9
1989
Number of authors
2
IAC number of authors
1
Citations
40
Refereed citations
34
Description
Spatial resolved low resolution spectroscopy of the haloes around the planetary nebulae NGC 6543 and NGC 6826 were conducted. The results imply that the radiation is thermal and not due to dust reflection. From those data chemical abundances and masses were calculated. Chemical abundances decrease in the haloes, while masses increase up to ten times in NGC 6543 reaching a value of 1 solar mass. The mass loss required to form these haloes coincides with that expected at the beginning of the evolution off the AGB.
Type
Refereed
Planetary nebulae
Red giant stars
Stellar evolution

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