Precision Spectroscopy of Solar Type Stars

• Grant number: 22/10325-3
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: January 01, 2023
• End date: November 30, 2024
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Jorge Luis Melendez Moreno
• Grantee: Shejeelammal Jameela
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 18/04055-8 - High precision spectroscopy: from the first stars to planets, AP.TEM

Abstract

This postdoctoral project aims to explore the differential analysis technique in order to determine stellar parameters and chemical abundances in solar-type stars. Using precise abundances (0.01 dex) we will investigate the connection between chemical anomalies and planet formation and we will study various stellar nucleosynthesis processes at unprecedented detail.

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)

CARVALHO-SILVA, GABRIELA; MELENDEZ, JORGE; RATHSAM, ANNE; SHEJEELAMMAL, J.; MARTOS, GIULIA; LORENZO-OLIVEIRA, DIEGO; SPINA, LORENZO; RIBEIRO ALVES, DEBORA. A New Age-Activity Relation For Solar Analogs that Accounts for Metallicity. Astrophysical Journal Letters, v. 983, n. 2, p. 7-pg., 2025-04-20. (23/16319-8, 21/01303-3, 22/05833-0, 22/10325-3, 18/04055-8)

SHEJEELAMMAL, J.; MELENDEZ, JORGE; RATHSAM, ANNE; MARTOS, GIULIA. The [Y/Mg] chemical clock in the Galactic disk: The influence of metallicity and the Galactic population in the solar neighbourhood. Astronomy & Astrophysics, v. 690, p. 13-pg., 2024-10-01. (18/04055-8, 22/10325-3)