Open AccessPlanetary nebula carbon yields and the chemical evolution of the Galactic disc
Author(s) -
Carigi Leticia
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06225.x
Subject(s) - physics , planetary nebula , astrophysics , stars , galaxy , chemical evolution , astronomy , formation and evolution of the solar system , nebula , protoplanetary nebula , solar system
Two sets of observational carbon stellar yields for low‐ and‐intermediate mass stars are computed based on planetary nebula abundances derived from C ii λ4267 and C iii λλ1906 + 1909 lines, respectively. These observational yields are assumed in chemical evolution models for the solar vicinity and the Galactic disc. C/O values observed in stars in the solar vicinity and Galactic H ii regions are compared with those predicted by chemical evolution models for the Galaxy. It is concluded that the C yields derived from permitted lines are in better agreement with the observational constraints than are those derived from forbidden lines.