The DIVING3D project: Deep IFS View of Nuclei of Galaxies

Principal Investigator:  João Evangelista Steiner

PI institution: Universidade de São Paulo, Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG), Cidade Universitária - Rua do Matão, 1226 05508-090 - São Paulo - SP, Brazil.

Co-Investigators:  Roberto Cid Fernandes, Paula Rodrigues Teixeira Coelho, Natalia Vale Asari, Roberto Bertoldo Menezes, Tiago Vecchi Ricci, André Luiz de Amorim, Daniel May Nicolazzi.

Original title of LLP: "LLP -  The Gemini Survey of Galactic Nuclei - GSGN"

    Galactic nuclei are special regions of galaxies, hosting supermassive black holes and stellar populations that record important aspects of the history of the galaxy formation and evolution. In this proposal we aim to perform a survey of nuclei of a complete sample with deep 3D spectroscopy, with a combination of unprecedented spatial resolution and signal-to noise. We expect to achieve 4 scientific goals:

    a) Nuclear emission line properties. Detect and study the statistical, geometric and physical properties of Low Luminosity AGN: “dwarf” Seyferts and LINERs as well as starburst nuclei. We propose to carry out the deepest demographic study of supermassive black holes and their local environment yet performed.

    b) Circumnuclear emission line properties. Determine the nature and ionization mechanism as well as the kinematics of the line emitting gas in the ~100 pc scale circum-nuclear region.

    c) Stellar kinematical properties of all nuclei. Mass-to-light ratios will be derived on dynamical basis and compared to those of spectral synthesis and stellar velocity dispersion in order to study the importance of dark matter and the IMF.

    d) Stellar populations archeology. Study the chemical composition and history of star formation using state-of the-art methods and stellar population models.

Progress Reports

2014 A Progress Report

2014 B Progress Report

2015 A Progress Report

2015 B Progress Report

2016 A Progress Report

2016 B Progress Report

2017 A Progress Report

2017 B Progress Report


Menezes, R. B.; Steiner, J. E.; 2017, Monthly Notices of the Royal Astronomical Society, 466, 749, April 1 - "The emission-line regions in the nucleus of NGC 1313 probed with GMOS-IFU: a supergiant/hypergiant candidate and a kinematically cold nucleus" (

Ricci, T. V.; Steiner, J. E.; Menezes, R. B.; 2016, Monthly Notices of the Royal Astronomical Society,  463, 3860, December 4 -
"IFU spectroscopy of 10 early-type galactic nuclei- IV. Properties of the circumnuclear stellar kinematics" (

Menezes, R. B.; Steiner, J. E.; da Silva, Patrícia; 2016, The Astrophysical Journal, 817, id. 150
, February 2 - "The Off-centered Seyfert-like Compact Emission in the Nuclear Region of NGC 3621"

Ricci, T. V.; Steiner, J. E.; Menezes, R. B.; 2015, Monthly Notices of the Royal Astronomical Society, 451, 3728, August 4 -
"IFU spectroscopy of 10 early-type galactic nuclei - III. Properties of the circumnuclear gas emission" (

Menezes, R. B.; Steiner, J. E.; Ricci, T. V.; 2014, The Astrophysical Journal Letters, 796, id. L13, November 1 - "An Off-centered Active Galactic Nucleus in NGC 3115"(

Ricci, T. V.; Steiner, J. E.; Menezes, R. B.; 2014, Monthly Notices of the Royal Astronomical Society, 440, 2419, April 3 - "Integral field unit spectroscopy of 10 early-type galactic nuclei - I. Principal component analysis Tomography and nuclear activity"(

Ricci, T. V.; Steiner, J. E.; Menezes, R. B.; 2014, IFU spectroscopy of 10 early-type galactic nuclei - II. Nuclear emission line properties, 440, 2442, April 3 - "IFU spectroscopy of 10 early-type galactic nuclei - II. Nuclear emission line properties" (

Menezes, R. B.; Steiner, J. E.; Ricci, T. V.; 2013, The Astrophysical Journal Letters, 765, L40, March 2 - "Collimation and Scattering of the Active Galactic Nucleus Emission in the Sombrero Galaxy"(