J. E. Steiner
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View article: Digging deeper into NGC 6868 II: ionized gas and excitation mechanism
Digging deeper into NGC 6868 II: ionized gas and excitation mechanism Open
We studied the ionized gas in the inner region ($\sim$$680\times 470$ pc2) of the galaxy NGC 6868 using Gemini/GMOS (Gemini Multi-Object Spectrograph) integral field unit observations. Channel maps reveal complex kinematics and morphology,…
View article: Digging deeper into NGC 6868 I: Stellar population
Digging deeper into NGC 6868 I: Stellar population Open
We use Gemini integral field unit observations to map the stellar population properties in the inner region (∼680 × 470 pc2) of the galaxy NGC 6868. In order to understand the physical and chemical properties of the stellar content of this…
View article: The DIVING3D Survey – Deep IFS View of Nuclei of Galaxies – III. Analysis of the nuclear region of the early-type galaxies of the sample
The DIVING3D Survey – Deep IFS View of Nuclei of Galaxies – III. Analysis of the nuclear region of the early-type galaxies of the sample Open
We analysed the nuclear region of all 56 early-type galaxies from the DIVING3D Project, which is a statistically complete sample of objects that contains all 170 galaxies in the Southern Hemisphere with B < 12.0 mag and galactic latitud…
View article: The DIVING3D Survey – Deep IFS view of nuclei of galaxies – II. First results: nuclear emission-line properties of the mini-DIVING3D sample
The DIVING3D Survey – Deep IFS view of nuclei of galaxies – II. First results: nuclear emission-line properties of the mini-DIVING3D sample Open
This work presents the first results of the Deep IFS View of Nuclei of Galaxies (DIVING3D) survey. We analysed the nuclear emission-line spectra of a sub-sample we call mini-DIVING3D, which includes all Southern galaxies with B < 11.2 a…
View article: The DIVING3D survey – Deep Integral Field Spectrograph View of Nuclei of Galaxies – I. Definition and sample presentation
The DIVING3D survey – Deep Integral Field Spectrograph View of Nuclei of Galaxies – I. Definition and sample presentation Open
We present the Deep Integral Field Spectrograph View of Nuclei of Galaxies (DIVING3D) survey, a seeing-limited optical 3D spectroscopy study of the central regions of all 170 galaxies in the Southern hemisphere with B < 12.0 and |b| >…
View article: The nuclear environment of NGC 2442: a Compton-thick low-luminosity AGN
The nuclear environment of NGC 2442: a Compton-thick low-luminosity AGN Open
The detailed study of nuclear regions of galaxies is important because it can help understanding the active galactic nucleus (AGN) feedback mechanisms, the connections between the nuclei and their host galaxies, and ultimately the galaxy f…
View article: The highly obscured Seyfert 2 nucleus in NGC 1448 observed with MUSE
The highly obscured Seyfert 2 nucleus in NGC 1448 observed with MUSE Open
We present the analysis of an optical data cube of the central region of NGC 1448, obtained with the Multi Unit Spectroscopic Explorer (MUSE). Chandra X-ray data indicate that the active galactic nucleus (AGN) is not located at the apparen…
View article: Principal component analysis tomography in near-infrared integral field spectroscopy of young stellar objects – I. Revisiting the high-mass protostar W33A
Principal component analysis tomography in near-infrared integral field spectroscopy of young stellar objects – I. Revisiting the high-mass protostar W33A Open
W33A is a well-known example of a high-mass young stellar object showing evidence of a circumstellar disc. We revisited the K-band NIFS/Gemini North observations of the W33A protostar using principal components analysis tomography and addi…
View article: The nuclear architecture of NGC 4151: on the path toward a universal outflow mechanism in light of NGC 1068
The nuclear architecture of NGC 4151: on the path toward a universal outflow mechanism in light of NGC 1068 Open
We report near-infrared integral field spectroscopic observations of the active galactic nucleus NGC 4151 with archive data from the NIFS-Gemini North Telescope. We have selected best-seeing observations (≲0.3 arcsec) that, allied to our m…
View article: The nuclear region of NGC 613 – II. Kinematics and stellar archaeology
The nuclear region of NGC 613 – II. Kinematics and stellar archaeology Open
In this work, we continue the study of the central region of NGC 613 by da Silva, Menezes & Steiner (Paper I), by analysing the stellar and gas kinematics and the stellar archaeology in optical and near-infrared data cubes. The high spatia…
View article: Measuring the mass of the supermassive black hole of the lenticular galaxy NGC 4546
Measuring the mass of the supermassive black hole of the lenticular galaxy NGC 4546 Open
Most galaxies with a well-structured bulge host a supermassive black hole (SMBH) in their centre. Stellar kinematics models applied to adaptive optics (AO) assisted integral field unit observations are well-suited to measure the SMBH mass …
View article: The nuclear region of NGC 613 – I. Multiwavelength analysis
The nuclear region of NGC 613 – I. Multiwavelength analysis Open
In this paper, we report a detailed study with a variety of data from optical, near-infrared, X-ray, and radio telescopes of the nuclear region of the galaxy NGC 613 with the aim of understanding its complexity. We detected an extended ste…
View article: A panchromatic spatially resolved study of the inner 500 pc of NGC 1052 – II. Gas excitation and kinematics
A panchromatic spatially resolved study of the inner 500 pc of NGC 1052 – II. Gas excitation and kinematics Open
We map the optical and near-infrared (NIR) emission-line flux distributions and kinematics of the inner 320 × 535 pc2 of the elliptical galaxy NGC 1052. The integral field spectra were obtained with the Gemini Telescope using the GMOS-IFU …
View article: Detection of a double-peaked H α component from the accretion disc of NGC 4958
Detection of a double-peaked H α component from the accretion disc of NGC 4958 Open
Active Galactic Nuclei are objects associated with the presence of an accretion disc around supermassive black holes found in the very central region of galaxies with a well-defined bulge. In the optical range of the spectrum, a possible s…
View article: A treatment procedure for GMOS/IFU data cubes: application to NGC 2835
A treatment procedure for GMOS/IFU data cubes: application to NGC 2835 Open
We present a set of treatment techniques for GMOS/IFU data cubes, including:\ncorrection of the differential atmospheric refraction; Butterworth spatial\nfiltering, to remove high spatial-frequency noise; instrumental fingerprint\nremoval;…
View article: Double Nuclei in NGC 908 and NGC 1187
Double Nuclei in NGC 908 and NGC 1187 Open
We analyze optical data cubes of the nuclear regions of two late-type galaxies, NGC 908 and NGC 1187, obtained with the Integral Field Unit of the Gemini Multi-Object Spectrograph. Both data cubes show stellar structures consistent with do…
View article: A panchromatic spatially resolved study of the inner 500 pc of NGC 1052 – I. Stellar population
A panchromatic spatially resolved study of the inner 500 pc of NGC 1052 – I. Stellar population Open
We map optical and near-infrared (NIR) stellar population properties of the inner 320 × 535 pc2 of the elliptical galaxy NGC 1052. The optical and NIR spectra were obtained using the Gemini Integral Field Units of the GMOS instrument and N…
View article: The GMT-consortium large earth finder (G-CLEF): an optical echelle spectrograph for the Giant Magellan Telescope (GMT)
The GMT-consortium large earth finder (G-CLEF): an optical echelle spectrograph for the Giant Magellan Telescope (GMT) Open
The GMT-Consortium Large Earth Finder (G-CLEF) is an instrument that is being designed to exceed the state-of-the-art radial velocity (RV) precision achievable with the current generation of stellar velocimeters. It is simultaneously being…
View article: NGC 6744: A Nearby Milky Way Twin with a Very Low-luminosity AGN
NGC 6744: A Nearby Milky Way Twin with a Very Low-luminosity AGN Open
NGC 6744 is the nearest and brightest south-hemisphere galaxy with a morphological type similar to that of the Milky Way. Using data obtained with the Integral Field Unit of the Gemini South Multi-Object Spectrograph, we found that this ga…
View article: Optical and near-infrared IFU spectroscopy of the nuclear region of the AGN-starburst galaxy NGC 7582
Optical and near-infrared IFU spectroscopy of the nuclear region of the AGN-starburst galaxy NGC 7582 Open
NGC 7582 is an SB(s)ab galaxy which displays evidences of simultaneous nuclear activity and star formation in its centre. Previous optical observations revealed, besides the H II regions, an ionization cone and a gas disc in its central pa…
View article: The molecular H2 and stellar discs in the nuclear region of NGC 4258
The molecular H2 and stellar discs in the nuclear region of NGC 4258 Open
NGC 4258 is an SABbc Seyfert galaxy, located at a distance of $7.2 \pm 0.3$ Mpc. This object is well known by its nearly edge-on molecular nuclear disc, located between 0.16 and 0.28 pc from the nucleus, whose H$_2$O maser emission allows …
View article: NGC 1566: analysis of the nuclear region from optical and near-infrared Integral Field Unit spectroscopy
NGC 1566: analysis of the nuclear region from optical and near-infrared Integral Field Unit spectroscopy Open
We analysed the centre of NGC 1566, which hosts a well-studied active\ngalactic nucleus (AGN), known for its variability. With the aid of techniques\nsuch as Principal Component Analysis Tomography, analysis of the emission-line\nspectra, …
View article: Integral field spectroscopy of the inner kpc of the elliptical galaxy NGC 5044
Integral field spectroscopy of the inner kpc of the elliptical galaxy NGC 5044 Open
We used Gemini Multi-Object Spectrograph (GMOS) in the Integral Field Unit\nmode to map the stellar population, emission line flux distributions and gas\nkinematics in the inner kpc of NGC 5044. From the stellar populations synthesis\nwe f…
View article: A two-stage outflow in NGC 1068
A two-stage outflow in NGC 1068 Open
We present an analysis of the Seyfert 2 galaxy NGC 1068 with archive data\nfrom SINFONI-VLT, in the HK bands with pixel scales of 0.1 (data set 1 - DS1)\nand 0.025 (DS2) arcsec. The data are revisited with a sophisticated data\ntreatment, …
View article: The emission-line regions in the nucleus of NGC 1313 probed with GMOS-IFU: a supergiant/hypergiant candidate and a kinematically cold nucleus
The emission-line regions in the nucleus of NGC 1313 probed with GMOS-IFU: a supergiant/hypergiant candidate and a kinematically cold nucleus Open
NGC 1313 is a bulgeless nearby galaxy, classified as SB(s)d. Its proximity\nallows high spatial resolution observations. We performed the first detailed\nanalysis of the emission-line properties in the nuclear region of NGC 1313,\nusing an…
View article: IFU spectroscopy of 10 early-type galactic nuclei– IV. Properties of the circumnuclear stellar kinematics
IFU spectroscopy of 10 early-type galactic nuclei– IV. Properties of the circumnuclear stellar kinematics Open
The study of stellar kinematic properties may provide hints on the formation and evolution of elliptical and lenticular galaxies. Although most previous studies have focused on the large scale of these galaxies, their central regions (scal…
View article: The opto-mechanical design of the GMT-Consortium Large Earth Finder (G-CLEF)
The opto-mechanical design of the GMT-Consortium Large Earth Finder (G-CLEF) Open
The GMT-Consortium Large Earth Finder (G-CLEF) is a fiber-fed, optical echelle spectrograph selected as the first light instrument for the Giant Magellan Telescope (GMT) now under construction at the Las Campanas Observatory in Chile. G-CL…
View article: The GMT-Consortium Large Earth Finder (G-CLEF): an optical Echelle spectrograph for the Giant Magellan Telescope (GMT)
The GMT-Consortium Large Earth Finder (G-CLEF): an optical Echelle spectrograph for the Giant Magellan Telescope (GMT) Open
The GMT-Consortium Large Earth Finder (G-CLEF) will be a cross-dispersed, optical band echelle spectrograph to be delivered as the first light scientific instrument for the Giant Magellan Telescope (GMT) in 2022. G-CLEF is vacuumenclosed a…
View article: Advanced structural design for precision radial velocity instruments
Advanced structural design for precision radial velocity instruments Open
The GMT-Consortium Large Earth Finder (G-CLEF) is an echelle spectrograph with precision radial velocity (PRV) capability that will be a first light instrument for the Giant Magellan Telescope (GMT). G-CLEF has a PRV precision goal of 40 c…
View article: Digging process in NGC 6951: the molecular disc bumped by the jet
Digging process in NGC 6951: the molecular disc bumped by the jet Open
We present a study of the central 200 pc of the galaxy NGC 6951, SAB(rs)bc, an active twin of the Milky Way, at a distance of 24 Mpc. Its nucleus has been observed in the optical with the Integral Field Unit of the Gemini Multi-Object Spec…