PN-Carbon Yields and the Chemical Evolution of the Galactic Disk

Abstract

Two sets of observational carbon stellar yields for low-and-intermediate mass stars are computed based on planetary nebula abundances derived from C II lambda 4267 and C III lambda lambda 1906 + 1909 lines, respectively. These observational yields are assumed in chemical evolution models for the solar vicinity and the Galactic disk. C/O values observed in stars of the solar vicinity and Galactic H II regions are compared with those predicted by chemical evolution models for the Galaxy. I conclude that the C yields derived from permitted lines are in better agreement with the observational constraints than those derived from forbidden lines.

8 pages, 6 figures, MNRAS accepted

References in corpus (2)

• A Reappraisal of the Solar Photospheric C/O Ratio
• Metal abundances and ionization conditions in a possibly dust-free damped Ly-alpha system at z=2.3

Cited by in corpus (9)

• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• A reappraisal of the chemical composition of the Orion nebula based on VLT echelle spectrophotometry
• The evolution of the C/O ratio in metal-poor halo stars
• Carbon Nitrogen, and Oxygen Galactic Gradients: A Solution to the Carbon Enrichment Problem
• Chemical abundances of the Galactic H II region NGC 3576 derived from VLT echelle spectrophotometry
• Chemical Composition of Two H II Regions in NGC 6822 Based on VLT Spectroscopy
• The radial abundance gradient of chlorine in the Milky Way
• Chemical and Photometric Evolution of the Local Group Galaxy NGC 6822 in a Cosmological Context
• Appraising the Necklace: A post-common-envelope carbon dwarf inside an apparently carbon-poor planetary nebula