Identification of bright ultra-metal-poor stars from Multi-Band photometry and spectroscopic follow-up

• Grant number: 18/21250-9
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: December 01, 2018
• End date: March 31, 2023
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Agreement: Netherlands Organisation for Scientific Research (NWO)
• Principal Investigator: Silvia Cristina Fernandes Rossi
• Grantee: Hélio Dotto Perottoni
• 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
• Associated scholarship(s): 22/04079-0 - Characterizing ultra-faint dwarf galaxies with S-PLUS survey, BE.EP.PD

Abstract

The main goal of this project is to find UltraMetal-Poor Stars in the photometric surveys forfuture statistical studies. With the advent of SDSS, SkyMapper, Pan-STARRS, DES, LSST andJPAS (in two-three years time scale), etc, there is a large archival source for developing newtechniques (e.g. artificial neural network) for finding low-metallicity stars. The identifiedobjects will ultimately be subject to high-resolution spectroscopic follow-up. The Posdocwill be highly involved with large survey datasets and is expected to contribute inthe effort to make the selected candidates available to the international community. Inaddition, we anticipate a BEPE proposal after the first two years, with the goal of workingwith international collaborators on this project.

Scientific publications

(16)

(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)

SANTOS-SILVA, T.; PEROTTONI, H. D.; ALMEIDA-FERNANDES, F.; GREGORIO-HETEM, J.; JATENCO-PEREIRA, V; MENDES DE OLIVEIRA, C.; MONTMERLE, T.; BICA, E.; BONATTO, C.; MONTEIRO, H.; et al. Canis Major OB1 stellar group contents revealed by Gaia. Monthly Notices of the Royal Astronomical Society, v. 508, n. 1, p. 1033-1055, NOV 2021. (18/20977-2, 14/18100-4, 18/21250-9, 15/24946-6, 18/06822-6)

SALES SILVA, J. V.; PEROTTONI, H. D.; CUNHA, K.; ROCHA-PINTO, H. J.; ALMEIDA-FERNANDES, F.; SOUTO, DIOGO; MAJEWSKI, S. R.. Triangulum?Andromeda Overdensity: a Region with a Complex Stellar Population. ASTROPHYSICAL JOURNAL, v. 886, n. 2, DEC 1 2019. (18/21250-9)

LIMBERG, GUILHERME; SANTUCCI, RAFAEL M.; ROSSI, SILVIA; QUEIROZ, ANNA B. A.; CHIAPPINI, CRISTINA; SOUZA, STEFANO O.; PEROTTONI, HELIO D.; PEREZ-VILLEGAS, ANGELES; BARBOSA, FABRICIA O.. Abundance Patterns of alpha and Neutron-capture Elements in the Helmi Stream. Astrophysical Journal Letters, v. 913, n. 2, JUN 2021. (18/21250-9, 14/18100-4, 15/50374-0, 18/22044-3)

BARBOSA, FABRICIA O.; SANTUCCI, RAFAEL M.; ROSSI, SILVIA; LIMBERG, GUILHERME; PEREZ-VILLEGAS, ANGELES; PEROTTONI, HELIO D.. The SDSS-Gaia View of the Color-Magnitude Relation for Blue Horizontal-branch Stars. ASTROPHYSICAL JOURNAL, v. 940, n. 1, p. 9-pg., 2022-11-01. (15/50374-0, 21/10429-0, 14/18100-4, 18/21250-9, 22/04079-0)

LIMBERG, GUILHERME; SANTUCCI, RAFAEL M.; ROSSI, SILVIA; SHANK, DEREK; PLACCO, VINICIUS M.; BEERS, TIMOTHY C.; SCHLAUFMAN, KEVIN C.; CASEY, ANDREW R.; PEROTTONI, HELIO D.; LEE, YOUNG SUN. Targeting Bright Metal-poor Stars in the Disk and Halo Systems of the Galaxy. ASTROPHYSICAL JOURNAL, v. 913, n. 1, MAY 2021. (14/18100-4, 15/50374-0, 18/21250-9)

PLACCO, VINICIUS M.; ROEDERER, IAN U.; LEE, YOUNG SUN; ALMEIDA-FERNANDES, FELIPE; HERPICH, FABIO R.; PEROTTONI, HELIO D.; SCHOENELL, WILLIAM; RIBEIRO, TIAGO; KANAAN, ANTONIO. SPLUS J210428.01-004934.2: An Ultra Metal-poor Star Identified from Narrowband Photometry. Astrophysical Journal Letters, v. 912, n. 2, MAY 10 2021. (18/21661-9, 18/21250-9)

ALMEIDA-FERNANDES, F.; SAMPEDRO, L.; HERPICH, F. R.; MOLINO, A.; BARBOSA, C. E.; BUZZO, M. L.; OVERZIER, R. A.; DE LIMA, E. V. R.; NAKAZONO, L. M., I; OLIVEIRA SCHWARZ, G. B.; et al. Data Release 2 of S-PLUS: Accurate template-fitting based photometry covering similar to 1000 deg(2) in 12 optical filters. Monthly Notices of the Royal Astronomical Society, v. 511, n. 3, p. 29-pg., 2022-02-26. (09/54202-8, 16/12331-0, 19/01312-2, 18/09165-6, 19/10923-5, 19/26492-3, 20/00457-4, 19/23388-0, 14/10566-4, 18/20977-2, 19/11910-4, 19/26412-0, 11/51680-6, 18/21250-9, 17/18191-8)

LIMBERG, GUILHERME; QUEIROZ, ANNA B. A.; PEROTTONI, HELIO D.; ROSSI, SILVIA; AMARANTE, JOAO A. S.; SANTUCCI, RAFAEL M.; CHIAPPINI, CRISTINA; PEREZ-VILLEGAS, ANGELES; LEE, YOUNG SUN. Phase-space Properties and Chemistry of the Sagittarius Stellar Stream Down to the Extremely Metal-poor ([Fe/H] less than or similar to-3) Regime. ASTROPHYSICAL JOURNAL, v. 946, n. 2, p. 15-pg., 2023-04-01. (22/04079-0, 18/21250-9, 15/50374-0, 14/18100-4, 21/10429-0, 22/07301-5)

WHITTEN, DEVIN D.; PLACCO, VINICIUS M.; BEERS, TIMOTHY C.; AN, DEOKKEUN; LEE, YOUNG SUN; ALMEIDA-FERNANDES, FELIPE; HERPICH, FABIO R.; DAFLON, SIMONE; BARBOSA, CARLOS E.; PEROTTONI, HELIO D.; et al. The Photometric Metallicity and Carbon Distributions of the Milky Way's Halo and Solar Neighborhood from S-PLUS Observations of SDSS Stripe 82. ASTROPHYSICAL JOURNAL, v. 912, n. 2, MAY 2021. (16/12331-0, 18/21661-9, 09/54202-8, 19/26492-3, 18/20977-2, 19/11910-4, 18/21250-9)

GREGORIO-HETEM, J.; NAVARETE, F.; HETEM, A.; SANTOS-SILVA, T.; GALLI, P. A. B.; FERNANDES, B.; MONTMERLE, T.; JATENCO-PEREIRA, V; FERNANDES, M. BORGES; PEROTTONI, H. D.; et al. Searching for Active Low-mass Stars in the CMa Star-forming Region: Multi-band Photometry with T80S. ASTRONOMICAL JOURNAL, v. 161, n. 3, MAR 2021. (18/06822-6, 14/18100-4, 18/21250-9, 17/19458-8, 17/18191-8, 18/05866-0)

PEROTTONI, HELIO D.; LIMBERG, GUILHERME; AMARANTE, JOAO A. S.; ROSSI, SILVIA; QUEIROZ, ANNA B. A.; SANTUCCI, RAFAEL M.; PEREZ-VILLEGAS, ANGELES; CHIAPPINI, CRISTINA. The Unmixed Debris of Gaia-Sausage/Enceladus in the Form of a Pair of Halo Stellar Overdensities. Astrophysical Journal Letters, v. 936, n. 1, p. 7-pg., 2022-09-01. (21/10429-0, 14/18100-4, 15/50374-0, 18/21250-9)

LIMBERG, GUILHERME; ROSSI, SILVIA; BEERS, TIMOTHY C.; PEROTTONI, HELIO D.; PEREZ-VILLEGAS, ANGELES; SANTUCCI, RAFAEL M.; ABUCHAIM, YURI; PLACCO, VINICIUS M.; LEE, YOUNG SUN; CHRISTLIEB, NORBERT; et al. Dynamically Tagged Groups of Very Metal-poor Halo Stars from the HK and Hamburg/ESO Surveys. ASTROPHYSICAL JOURNAL, v. 907, n. 1, JAN 2021. (17/15893-1, 14/18100-4, 18/21250-9, 15/50374-0)

PEROTTONI, HELIO D.; AMARANTE, JOAO A. S.; LIMBERG, GUILHERME; ROCHA-PINTO, HELIO J.; ROSSI, SILVIA; ANDERS, FRIEDRICH; BORBOLATO, LAIS. Searching for Extragalactic Exoplanetary Systems: The Curious Case of BD+20 2457. Astrophysical Journal Letters, v. 913, n. 1, MAY 2021. (14/18100-4, 15/50374-0, 18/21250-9)

ABUCHAIM, YURI; PEROTTONI, HELIO D.; ROSSI, SILVIA; LIMBERG, GUILHERME; PEREZ-VILLEGAS, ANGELES; SANTUCCI, RAFAEL M.; PLACCO, VINICIUS M.; SALES-SILVA, JOAO V.; ANDERS, FRIEDRICH; ROCHA-PINTO, HELIO J.. The Chemodynamical Nature of the Triangulum-Andromeda Overdensity. ASTROPHYSICAL JOURNAL, v. 949, n. 2, p. 13-pg., 2023-06-01. (22/04079-0, 18/21250-9, 15/50374-0, 14/18100-4, 21/10429-0, 22/07301-5)

SILVA, J. V. SALES; CUNHA, K.; PEROTTONI, H. D.; ROCHA-PINTO, H. J.; DAFLON, S.; ALMEIDA-FERNANDES, F.; SOUTO, DIOGO; MAJEWSKI, S. R.. The Abundance Pattern of alpha Elements in the Triangulum-Andromeda Overdensity. ASTROPHYSICAL JOURNAL, v. 901, n. 1, p. 10-pg., 2020-09-01. (18/21250-9)

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)