Study of stellar populations in the S-PLUS survey

• Grant number: 21/09468-1
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: January 01, 2022
• End date: December 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Claudia Lucia Mendes de Oliveira
• Grantee: Felipe de Almeida Fernandes
• Supervisor: Vinicius Moris Placco
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: National Optical-Infrared Astronomy Research Laboratory (NOIRLab), United States
• Associated to the scholarship: 18/20977-2 - Identification of giant stars for mapping our Galaxy in the S-PLUS survey, BP.PD

Abstract

During the BEPE fellowship, I will work on three different projects that are related to each other. The first 2 (Projects A and B) are already in an advanced stage of development, while the last one (Project C) will be started during the BEPE. In Project A, we take advantage of the S-PLUS narrow band filters to select giant stars in specific color-color diagrams. These giant stars will be used to find optical counterparts of x-ray emissions in the search for symbiotic stars. In Project B, we will use the SED-fitting technique developed for the S-PLUS calibration pipeline to produce a value added catalog of stellar parameters. These parameters will be used to characterize the open clusters in S-PLUS iDR4 and will allow me to investigate the relation between their ages and spatial velocity dispersion (which I already started in a previous work, but with a very inhomogeneous sample). Finally, in project C, I will use the catalog of project A to select members of Galactic streams observed with S-PLUS. We will prepare observational proposals for one of the many telescopes operated by NOIRLab (preferably, Gemini) to obtain high-resolution spectra for the members of the streams to study their chemical composition and investigate their origins by comparing their composition to those of different galactic structures and other overdensities. (AU)

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)

PLACCO, VINICIUS M.; ALMEIDA-FERNANDES, FELIPE; ARENTSEN, ANKE; LEE, YOUNG SUN; SCHOENELL, WILLIAM; RIBEIRO, TIAGO; KANAAN, ANTONIO. Mining S-PLUS for Metal-poor Stars in the Milky Way. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, v. 262, n. 1, p. 15-pg., 2022-09-01. (21/09468-1, 18/20977-2)

ALMEIDA-FERNANDES, F.; PLACCO, V. M.; ROCHA-PINTO, H. J.; FERNANDES, M. B.; LIMBERG, G.; SILVA, L. BERALDO E.; AMARANTE, J. A. S.; PEROTTONI, H. D.; OVERZIER, R.; SCHOENELL, W.; et al. Chemodynamical properties and ages of metal-poor stars in S-PLUS. Monthly Notices of the Royal Astronomical Society, v. 523, n. 2, p. 18-pg., 2023-05-30. (22/04079-0, 18/21250-9, 21/10429-0, 22/07301-5, 21/09468-1, 18/20977-2)