Modeling integrated spectra of globular clusters and galaxies

• Grant number: 18/03480-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: April 01, 2018
• End date: March 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Agreement: Netherlands Organisation for Scientific Research (NWO)
• Principal Investigator: Silvia Cristina Fernandes Rossi
• Grantee: Tatiana Coelho de Moura Bastos
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 15/50374-0 - Mosaic: the multi-object spectrograph for the ESO Extremely Large Telescope, AP.TEM

Abstract

Abstract: The aim is to investigate astronomical science performance, by carrying out simulations of the MOSAIC spectrograph, by characterizing the performance of optical and near-infrared fibres, design of slit-unit prototype and test set-up, slit unit performance tests. The scientific aim is spectroscopy of distant stars, globular clusters and integrated light of galaxies.Objectives: Scientific perspective:The primary goal is the work on simulations of observations in the future MOSAIC@ELT spectrograph. It includes in particular spectroscopy of distant stars and integrated light of globular clusters and galaxies.It also includes acquaintance with the expertise in optical fibers and slit assembly developed at the Laboratório Nacional de Astrofísica (LNA),under the direction of the coordinator at LNA Bruno Castilho. Description of the work plan:The work involves software for simulations of the MOSAIC spectrograph, characterization of the performance of optical and near-infrared fibres. A simulation software is already developed by the Observatoire de Paris. Construction of spectra using spectrum synthesis codes PFANT and TURBOSPECTRUM, as well as construction of the integrated light of single stellar populations, typical of star clusters is intended. Work on stellar spectra of different spectral resolutions, and on integrated spectra of globular clusters and galaxies should be developed.It also involves participation in the work at the LNA/MCTIC on the design of slit-unit prototype and test set-up, slit unit performance tests.Cronogram: 1st year: Work simulations of observations for the MOSAIC spectrograph. Work on optical fibers at the Laboratório Nacional de Astrofísica/MCTI together with IAG staff working recently on spectrographs using fibers (SIFS, PFS/SUBARU). 2nd year, 3rd year: Work in Brazil and the Netherlands, on simulations, characterizing the performance of optical and near-infrared fibres, design of slit-unit prototype and slit unit performance tests. (AU)

Scientific publications

(5)

(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)

DE CARVALHO, R. R.; COSTA, A. P.; MOURA, T. C.; RIBEIRO, A. L. B.. The mass density profile and star formation history of Gaussian and non-Gaussian clusters. Monthly Notices of the Royal Astronomical Society, v. 487, n. 1, p. L86-L90, JUL 2019. (18/03480-7, 14/11156-4)

RAZERA, R.; BARBUY, B.; MOURA, T. C.; ERNANDES, H.; PEREZ-VILLEGAS, A.; SOUZA, S. O.; CHIAPPINI, C.; QUEIROZ, A. B. A.; ANDERS, F.; FERNANDEZ-TRINCADO, J. G.; et al. Abundance analysis of APOGEE spectra for 58 metal-poor stars from the bulge spheroid. Monthly Notices of the Royal Astronomical Society, v. 517, n. 3, p. 17-pg., 2022-11-03. (18/22044-3, 18/03480-7)

MOURA, T. C.; TREVISAN, M.; BARBUY, B.; ROSSI, S.. Integrated Spectra of Milky Way Globular Clusters. ASTROPHYSICAL JOURNAL, v. 885, n. 1, NOV 1 2019. (18/03480-7, 14/18100-4, 15/50374-0)

MOURA, TATIANA C.; DE CARVALHO, REINALDO R.; REMBOLD, SANDRO B.; TREVISAN, MARINA; RIBEIRO, ANDRE L. B.; PEREZ-VILLEGAS, ANGELES; LA BARBERA, FRANCESCO; STALDER, DIEGO H.; ROSA, REINALDO R.. Stellar population properties of ETGs in compact groups of galaxies. Monthly Notices of the Royal Astronomical Society, v. 493, n. 3, p. 3238-3254, APR 2020. (17/15893-1, 18/03480-7)

BARBUY, B.; ERNANDES, H.; SOUZA, S. O.; RAZERA, R.; MOURA, T.; MELENDEZ, J.; PEREZ-VILLEGAS, A.; ZOCCALI, M.; MINNITI, D.; DIAS, B.; et al. Gemini/Phoenix H-band analysis of the globular cluster AL 3. Astronomy & Astrophysics, v. 648, p. 13-pg., 2021-04-07. (18/03480-7, 17/15893-1)