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Chemical evolution of barred spiral galaxies and chemical abundances of planetary nebula towards the center of the Milky Way

Grant number: 12/01017-1
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2012
Effective date (End): April 21, 2014
Field of knowledge:Physical Sciences and Mathematics - Astronomy
Principal Investigator:Walter Junqueira Maciel
Grantee:Oscar Cavichia de Moraes
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:10/18835-3 - Planetary nebulae, stars and chemical evolution of stellar systems, AP.TEM

Abstract

The present project aims the study of the chemical properties of the planetary nebulae population located towards the Galactic centre, as well as the study of the chemical evolution of barred spiral galaxies. In particular, the project aims spectrophotometric observations of low surface brightness planetary nebulae located in the direction of the galactic centre. These new data will provide information about the formation and evolution of the galactic bulge, and also new constraints for the bulge chemical evolution models. Furthermore, these new data will give information about the chemical abundance gradient in the direction of the galatic centre. So that, this project intends to acquire new physical parameters and chemical abundances of planetary nebulae located in this region using the SOAR telescope.Additionally, a chemical evolution model adapted to include radial gas flows will be applied to study the chemical evolution of the Milky Way and other barred spiral galaxies. In particular, this project intends to understand the role of the radial gas flows originated by central bars on the chemical distributions in this region and nearby regions close to the bar.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CAVICHIA, O.; COSTA, R. D. D.; MACIEL, W. J.; MOLLA, M. The population of planetary nebulae near the Galactic Centre: chemical abundances. Monthly Notices of the Royal Astronomical Society, v. 468, n. 1, p. 272-290, JUN 2017. Web of Science Citations: 3.
MOLLA, MERCEDES; CAVICHIA, OSCAR; GAVILAN, MARTA; GIBSON, BRAD K. Galactic chemical evolution: stellar yields and the initial mass function. Monthly Notices of the Royal Astronomical Society, v. 451, n. 4, p. 3693-3708, AUG 21 2015. Web of Science Citations: 29.
CAVICHIA, O.; MOLLA, M.; COSTA, R. D. D.; MACIEL, W. J. The role of the Galactic bar in the chemical evolution of the Milky Way. Monthly Notices of the Royal Astronomical Society, v. 437, n. 4, p. 3688-3701, FEB 2014. Web of Science Citations: 25.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.