The Chemical Features of Galactic Planetary Nebulae
1993 ◽
Vol 155
◽
pp. 575-575
Keyword(s):
The chemical composition of 218 galactic planatary nebulae is investigated, all the nebulae are divided into four classes according to the masses of the nebulae and progenitor stars. The values of local abundances, galactic abundances and electron temperature gradients are found for each class of nebulae. The correlations between element abundances are also investigated. The results are compared with theorical predictions.
Keyword(s):
1993 ◽
Vol 155
◽
pp. 586-586
1989 ◽
Vol 1
(8)
◽
pp. 1654-1658
◽
The Masses and Chemical Composition of Planetary Nebulae in the Galactic Bulge and Magellanic Clouds
1976 ◽
Vol 174
(3)
◽
pp. 513-529
◽
Keyword(s):
1990 ◽
1977 ◽
Vol 82
(32)
◽
pp. 5073-5080
◽
1993 ◽
Vol 138
◽
pp. 192-196