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Galactic nuclei in the local universe: supermassive black holes and stellar archeology of galaxies of high and low masses

Grant number: 12/02268-8
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): July 01, 2012
Effective date (End): April 30, 2016
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
Principal Investigator:João Evangelista Steiner
Grantee:Roberto Bertoldo Menezes
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:11/51680-6 - Exploring the universe: from the galaxies formation to Earth-like planets with the Giant Magellan Telescope, AP.ESP

Abstract

In this project, we propose to study data cubes from two statistically complete samples of galaxies. The first of them will be composed by objects of morphological types E+S0 and the second by objects of types Scd+Sd. The galaxies of types E+S0, in general, have high mass, little gas, low star formation, are dominated by classical bulges and often show nuclear activity. However, the ones of types Scd+Sd have low mass, great amounts of gas, strong star formation, are associated to pseudo-bulges and rarely show nuclear activity. All of the selected objects for this work are brighter than B = 11 and have |b| > 10°. A detailed procedure of data treatment, developed by us in previous years, will be applied in all of the data cubes we will analyze. This procedure will include: correction of the differential atmospheric refraction, Butterworth filtering of spatial and spectral high frequency noises, removal of instrumental fingerprints and Richardson-Lucy deconvolution. The main methodologies for the analysis of the data cubes in this work will be: PCA Tomography, spectral synthesis with the software Starlight, determination of the kinematical parameters with the pPXF, removal of the synthetic stellar continua (obtained with the spectral synthesis) and analysis of the residual data cube. Depending on the nature of the object, the following techniques may also be used: BPT diagnostic diagrams, elaboration of images of high and low densities (from the [SII] lines), dynamical simulation with the methods of Jeans and Schwarzschild, dynamical simulation with the model of a gaseous disk and analysis of the stellar archeology. The main goals of this work are: determine the fraction of galaxies E+S0 and Scd+Sd with AGN, determine the history of star formation, determine the metallicity of the stellar population, study the kinematics of the stellar and gaseous components, measure the mass of the central black hole, check the existence of double or binary AGN and elaborate a comparative study between bulges and pseudo-bulges. (AU)

Scientific publications (8)
(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)
MENEZES, R. B.; STEINER, J. E. The emission-line regions in the nucleus of NGC 1313 probed with GMOS-IFU: a supergiant/hypergiant candidate and a kinematically cold nucleus. Monthly Notices of the Royal Astronomical Society, v. 466, n. 1, p. 749-761, APR 2017. Web of Science Citations: 0.
MAY, D.; STEINER, J. E.; RICCI, T. V.; MENEZES, R. B.; ANDRADE, I. S. Digging process in NGC 6951: the molecular disc bumped by the jet. Monthly Notices of the Royal Astronomical Society, v. 457, n. 1, p. 949-970, MAR 21 2016. Web of Science Citations: 4.
MENEZES, R. B.; STEINER, J. E.; DA SILVA, PATRICIA. THE OFF-CENTERED SEYFERT-LIKE COMPACT EMISSION IN THE NUCLEAR REGION OF NGC 3621. ASTROPHYSICAL JOURNAL, v. 817, n. 2 FEB 1 2016. Web of Science Citations: 3.
MENEZES, R. B.; STEINER, J. E. THE MOLECULAR H-2 EMISSION AND THE STELLAR KINEMATICS IN THE NUCLEAR REGION OF THE SOMBRERO GALAXY. ASTROPHYSICAL JOURNAL, v. 808, n. 1 JUL 20 2015. Web of Science Citations: 3.
MENEZES, R. B.; DA SILVA, PATRICIA; RICCI, T. V.; STEINER, J. E.; MAY, D.; BORGES, B. W. A treatment procedure for VLT/SINFONI data cubes: application to NGC 5643. Monthly Notices of the Royal Astronomical Society, v. 450, n. 1, p. 369-396, JUN 11 2015. Web of Science Citations: 25.
MENEZES, R. B.; STEINER, J. E.; RICCI, T. V. AN OFF-CENTERED ACTIVE GALACTIC NUCLEUS IN NGC 3115. Astrophysical Journal Letters, v. 796, n. 1 NOV 20 2014. Web of Science Citations: 8.
MENEZES, R. B.; STEINER, J. E.; RICCI, T. V. A treatment procedure for Gemini North/NIFS data cubes: application to NGC 4151. Monthly Notices of the Royal Astronomical Society, v. 438, n. 3, p. 2597-2620, MAR 2014. Web of Science Citations: 26.
MENEZES, R. B.; STEINER, J. E.; RICCI, T. V. COLLIMATION AND SCATTERING OF THE ACTIVE GALACTIC NUCLEUS EMISSION IN THE SOMBRERO GALAXY. Astrophysical Journal Letters, v. 765, n. 2 MAR 10 2013. Web of Science Citations: 4.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.