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Spectral analysis of the hybrid PG 1159-type central stars of the planetary nebulae Abell 43 and NGC 7094
(Wiley Blackwell Publishing, Inc, 2019-07-25)
Stellar post asymptotic giant branch (post-AGB) evolution can be completely altered by a final thermal pulse (FTP) which may occur when the star is still leaving the AGB (AFTP), at the departure from the AGB at still ...
HgMn Stars: Cornerstones for our Understanding of Late B-type Multiple Star Formation
(University of Zagreb, 2013-01)
The most distinctive feature of HgMn stars is the extreme overabundance of heavy elements in their atmospheres. Furthermore, they show chemical horizontal and vertical inhomogeneities and kG mean quadratic magnetic fields. ...
Age distribution of the central stars of galactic disk planetary nebulae
(EDP SCIENCES S A, 2010)
Context. Determination of the ages of central stars of planetary nebulae (CSPN) is a complex problem, and there is presently no single method that can be generally applied. We have developed several methods of estimating ...