Bulge globular clusters: relics of the early formation of the galaxy

• Grant number: 18/22044-3
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: March 01, 2019
• End date: May 31, 2024
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Beatriz Leonor Silveira Barbuy
• Grantee: Stefano Oliveira de Souza
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 14/18100-4 - Stellar populations in the Milky Way: bulge, halo, disk and star forming regions; instrumentation for high resolution spectroscopy, AP.TEM

Abstract

The galactic bulge is the component of the milky way that is most controversial in terms of its formation process. The aim of this project is the study of globular clusters as tracers of the formation and evolution of the galactic bulge, by means of photometry, spectroscopy, and complemented with dynamical studies. High quality photometry as obtained with the Hubble Space Telescope (HST) and GEMS@Gemini allow to derive ages with good precision. Spectroscopic analyses will be carried out using different resolutions: R~45,000 with UVES@VLT and STELES@SOAR in the optical, R~70,000 with APOGEE@SDSS, medium R~22,000 with GIRAFFE@VLT, and low R~4,000 with other instruments. This is due mainly to the fact that we have perspectives to obtain such data, but also because the study of abundances with different resolutions will allow to use more distant and fainter objects, using the future large telescopes. Finally, having ages, metallicities and element abundances, combined withdistances, radial velocities, and proper motions (in particular from the Gaia satellite), we are able to compute their orbits, usinga galactic potential consistent with the observations. (AU)

Scientific publications

(17)

(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)

ROMERO-COLMENARES, MARIA; FERNANDEZ-TRINCADO, JOSE G.; GEISLER, DOUG; SOUZA, STEFANO O.; VILLANOVA, SANDRO; LONGA-PENA, PENELOPE; MINNITI, DANTE; BEERS, TIMOTHY C.; MONI BIDIN, CRISTIAN; PEREZ-VILLEGAS, ANGELES; et al. CAPOS: The bulge Cluster APOgee Survey II. The intriguing ``Sequoia{''} globular cluster FSR 1758. Astronomy & Astrophysics, v. 652, AUG 27 2021. (18/22044-3)

SOUZA, S. O.; KERBER, L. O.; BARBUY, B.; PEREZ-VILLEGAS, A.; OLIVEIRA, R. A. P.; NARDIELLO, D.. Self-consistent Analysis of Stellar Clusters: An Application to HST Data of the Halo Globular Cluster NGC 6752. ASTROPHYSICAL JOURNAL, v. 890, n. 1, FEB 10 2020. (17/15893-1, 18/22044-3, 18/22181-0)

PEREZ-VILLEGAS, ANGELES; BARBUY, BEATRIZ; KERBER, LEANDRO O.; ORTOLANI, SERGIO; SOUZA, STEFANO O.; BICA, EDUARDO. Globular clusters in the inner Galaxy classified from dynamical orbital criteria. Monthly Notices of the Royal Astronomical Society, v. 491, n. 3, p. 3251-3265, JAN 2020. (17/15893-1, 18/22044-3)

FERNANDEZ-TRINCADO, JOSE G.; BEERS, TIMOTHY C.; MINNITI, DANTE; CARIGI, LETICIA; PLACCO, VINICIUS M.; CHUN, SANG-HYUN; LANE, RICHARD R.; GEISLER, DOUG; VILLANOVA, SANDRO; SOUZA, STEFANO O.; et al. APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge. Astronomy & Astrophysics, v. 647, MAR 11 2021. (18/22044-3)

ORTOLANI, S.; HELD, V, E.; NARDIELLO, D.; SOUZA, S. O.; BARBUY, B.; PEREZ-VILLEGAS, A.; CASSISI, S.; BICA, E.; MOMANY, Y.; SAVIANE, I. Another relic bulge globular cluster: ESO 456-SC38 (Djorgovski 2). Astronomy & Astrophysics, v. 627, JUL 16 2019. (17/15893-1, 18/22044-3)

FERNANDEZ-TRINCADO, JOSE G.; MINNITI, DANTE; BEERS, TIMOTHY C.; VILLANOVA, SANDRO; GEISLER, DOUG; SOUZA, STEFANO O.; SMITH, LEIGH C.; PLACCO, VINICIUS M.; VIEIRA, KATHERINE; PEREZ-VILLEGAS, ANGELES; et al. The enigmatic globular cluster UKS 1 obscured by the bulge: H-band discovery of nitrogen-enhanced stars. Astronomy & Astrophysics, v. 643, NOV 17 2020. (17/15893-1, 18/22044-3)

LIMBERG, GUILHERME; SOUZA, STEFANO O.; PEREZ-VILLEGAS, ANGELES; ROSSI, SILVIA; PEROTTONI, HELIO D.; SANTUCCI, RAFAEL M.. Reconstructing the Disrupted Dwarf Galaxy Gaia-Sausage/Enceladus Using Its Stars and Globular Clusters. ASTROPHYSICAL JOURNAL, v. 935, n. 2, p. 16-pg., 2022-08-01. (15/50374-0, 14/18100-4, 18/22044-3, 21/10429-0)

SOUZA, S. O.; ERNANDES, H.; VALENTINI, M.; BARBUY, B.; CHIAPPINI, C.; PEREZ-VILLEGAS, A.; ORTOLANI, S.; FRIACA, A. C. S.; QUEIROZ, A. B. A.; BICA, E.. Chrono-chemodynamical analysis of the globular cluster NGC 6355: Looking for the fundamental bricks of the Bulge. Astronomy & Astrophysics, v. 671, p. 21-pg., 2023-03-03. (18/22044-3)

OLIVEIRA, R. A. P.; MAIA, F. F. S.; BARBUY, B.; DIAS, B.; SANTOS JR, J. F. C.; SOUZA, S. O.; KERBER, L. O.; BICA, E.; SANMARTIM, D.; QUINT, B.; et al. The VISCACHA survey - VII. Assembly history of the Magellanic Bridge and SMC Wing from star clusters. Monthly Notices of the Royal Astronomical Society, v. 524, n. 2, p. 18-pg., 2023-07-12. (18/22181-0, 18/22044-3)

FERNANDEZ-TRINCADO, JOSE G.; MINNITI, DANTE; SOUZA, STEFANO O.; BEERS, TIMOTHY C.; GEISLER, DOUG; BIDIN, CHRISTIAN MONI; VILLANOVA, SANDRO; MAJEWSKI, STEVEN R.; BARBUY, BEATRIZ; PEREZ-VILLEGAS, ANGELES; et al. VVV CL001: Likely the Most Metal-poor Surviving Globular Cluster in the Inner Galaxy. Astrophysical Journal Letters, v. 908, n. 2, FEB 2021. (18/22044-3)

BARBUY, B.; CANTELLI, E.; MUNIZ, L.; SOUZA, S. O.; CHIAPPINI, C.; HIRSCHI, R.; CESCUTTI, G.; PIGNATARI, M.; ORTOLANI, S.; KERBER, L.; et al. UVES analysis of red giants in the bulge globular cluster NGC 6522. Astronomy & Astrophysics, v. 654, OCT 5 2021. (18/22044-3)

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)

DIAS, B.; ANGELO, M. S.; OLIVEIRA, R. A. P.; MAIA, F.; PARISI, M. C.; DE BORTOLI, B.; SOUZA, S. O.; KATIME SANTRICH, O. J.; BASSINO, L. P.; BARBUY, B.; et al. The VISCACHA survey: III. Star clusters counterpart of the Magellanic Bridge and Counter-Bridge in 8D. Astronomy & Astrophysics, v. 647, MAR 17 2021. (18/22044-3, 18/22181-0)

OLIVEIRA, R. A. P.; ORTOLANI, S.; BARBUY, B.; KERBER, L. O.; MAIA, F. F. S.; BICA, E.; CASSISI, S.; SOUZA, S. O.; PEREZ-VILLEGAS, A.. Precise distances from OGLE-IV member RR Lyrae stars in six bulge globular clusters. Astronomy & Astrophysics, v. 657, JAN 21 2022. (18/22181-0, 18/22044-3)

OLIVEIRA, R. A. P.; SOUZA, S. O.; KERBER, L. O.; BARBUY, B.; ORTOLANI, S.; PIOTTO, G.; NARDIELLO, D.; PEREZ-VILLEGAS, A.; MAIA, F. F. S.; BICA, E.; et al. The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XX. Ages of Single and Multiple Stellar Populations in Seven Bulge Globular Clusters. ASTROPHYSICAL JOURNAL, v. 891, n. 1, MAR 1 2020. (17/15893-1, 18/22044-3, 18/22181-0)

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)

SOUZA, S. O.; VALENTINI, M.; BARBUY, B.; PEREZ-VILLEGAS, A.; CHIAPPINI, C.; ORTOLANI, S.; NARDIELLO, D.; DIAS, B.; ANDERS, F.; BICA, E.. Photo-chemo-dynamical analysis and the origin of the bulge globular cluster Palomar 6. Astronomy & Astrophysics, v. 656, DEC 8 2021. (18/22044-3)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SOUZA, Stefano Oliveira de. A chrono-chemo-dynamical analysis of Globular Clusters: Looking for the fossils of the Galactic bulge/bar formation. 2024. Doctoral Thesis - Universidade de São Paulo (USP). Instituto Astronômico e Geofísico (IAG/SBD) São Paulo.