Publications (21)
Chromatically modelling the parsec scale dusty structure in the centre of NGC1068
James Leftley, Romain Petrov, Niklas Moszczynski +19
The Very Large Telescope Interferometer (VLTI) has been providing breakthrough images of the dust in the central parsecs of Active Galactic Nuclei (AGN), a key component of the AGN…
Dust emission from a parsec-scale structure in the Seyfert 1 nucleus of NGC 4151
Leonard Burtscher, Walter Jaffe, David Raban +3
We report mid-IR interferometric measurements with \sim 10 mas resolution, which resolve the warm (T = 285 +25 / -50 K) thermal emission at the center of NGC 4151. Using pairs of V…
Direct imaging of AGN outflows and their origin with the 23 m Large Binocular Telescope
Jacob W. Isbell, Steve Ertel, Jörg-Uwe Pott +17
Active galactic nuclei (AGNs) are a key component of galaxy evolution due to feedback on the host from its supermassive black hole. The morphology of warm, in- and outflowing dusty…
A diversity of dusty AGN tori: Data release for the VLTI/MIDI AGN Large Program and first results for 23 galaxies
Leonard Burtscher, Klaus Meisenheimer, Konrad R. W. Tristram +9
The AGN-heated dust distribution (the "torus") is increasingly recognized not only as the absorber required in unifying models, but as a tracer for the reservoir that feeds the nuc…
Relation between dust and radio luminosity in optically selected early type galaxies
Davor Krajnovic, Walter Jaffe
We have surveyed an optical/IR selected sample of nearby E/S0 galaxies with and without nuclear dust structures with the VLA at 3.6 cm to a sensitivity of 100 Jy. We can constr…
Parsec-scale dust distributions in Seyfert galaxies - Results of the MIDI AGN snapshot survey
Konrad R. W. Tristram, David Raban, Klaus Meisenheimer +11
The emission of warm dust dominates the mid-infrared spectra of active galactic nuclei (AGN). Only interferometric observations provide the necessary angular resolution to resolve…
Resolving the nucleus of Centaurus A at mid-IR wavelengths
Leonard Burtscher, Klaus Meisenheimer, Walter Jaffe +2
We have observed Centaurus A with the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Interferometer (VLTI) at resolutions of 7 - 15 mas (at 12.5 micron)…
The dusty heart of Circinus II. Scrutinizing the LM-band dust morphology using MATISSE
Jacob W. Isbell, Jörg-Uwe Pott, Klaus Meisenheimer +11
In this paper we present the first-ever - and -band interferometric observations of Circinus, building upon a recent -band analysis. We used these observations to reconstr…
The dusty heart of Circinus: I. Imaging the circumnuclear dust in N-band
Jacob W. Isbell, Klaus Meisenheimer, Jörg-Uwe Pott +28
Active galactic nuclei play a key role in the evolution of galaxies, but their inner workings and physical connection to the host are poorly understood due to a lack of angular res…
STARSFLUX: an all-sky catalogue of absolute spectro-photometric calibrators from 0.3 to 30 m
Violeta Gámez Rosas, Michiel Hogerheijde, Roy van Boekel +10
The paper introduces STARSFLUX, an all‑sky catalogue of over 64,000 absolute spectro‑photometric calibrator spectra from 0.3 to 30 µm, derived by fitting Gaia DR3 stellar parameter…
A Nuclear Disk and massive BH in NGC 4342
Frank C. van den Bosch, Walter Jaffe
We discuss photometric and spectroscopic data of the E/S0 galaxy NGC 4342, obtained with the Hubble Space Telescope (HST). This galaxy harbors, in addition to its outer disk, a ver…
Thermal imaging of dust hiding the black hole in the Active Galaxy NGC 1068
Violeta Gamez Rosas, Jacob W. Isbell, Walter Jaffe +49
In the widely accepted 'Unified Model' solution of the classification puzzle of Active Galactic Nuclei, the orientation of a dusty accretion torus around the central black hole dom…
Nuclear stellar discs in early-type galaxies -- I. HST and WHT observations
Frank C. van den Bosch, Walter Jaffe, Roeland P. van der Marel
We present multi-colour (U, V and I) photometry obtained with the second Wide Field and Planetary Camera (WFPC2) on the Hubble Space Telescope (HST), and spectra taken with the Wil…
WFPC2 Images of the Central Regions of Early-Type Galaxies - I. The Data
Armin Rest, Frank C. van den Bosch, Walter Jaffe +5
We present high resolution R-band images of the central regions of 67 early-type galaxies obtained with the Wide Field and Planetary Camera 2 (WFPC2) aboard the Hubble Space Telesc…
Shocks, Winds, and a Torus: The Large Binocular Telescope Interferometer (LBTI) Resolves the Active Nucleus of NGC 4151
Jacob W. Isbell, Steve Ertel, Makoto Kishimoto +12
We present mid-infrared (MIR) observations of the Seyfert 1 galaxy NGC 4151 using the Large Binocular Telescope Interferometer (LBTI). We took open-loop Fizeau images with 66-104 m…
Resolving the obscuring torus in NGC 1068 with the power of infrared interferometry: Revealing the inner funnel of dust
David Raban, Walter Jaffe, Huub Röttgering +2
We present new interferometric data obtained with MIDI (MID infrared Interferometric instrument) for the Seyfert II galaxy NGC 1068, with an extensive coverage of sixteen uv points…
Constraining the gap size in the disk around HD 100546 in the mid-infrared
Narges Jamialahmadi, Thorsten Ratzka, Olja Panic +6
We refine the gap size measurements of the disk surrounding the Herbig Ae star HD 100546 in the N band. Our new mid-infrared interferometric (MIDI) data have been taken with the UT…
HST observations of nuclear stellar disks
Davor Krajnovic, Walter Jaffe
We present observations of four nearby early-type galaxies with previously known nuclear stellar disks using two instruments on-board the Hubble Space Telescope. We observed NGC412…
Infrared Interferometry and AGNs: Parsec-scale Disks and Dusty Outflows
Leonard Burtscher, Sebastian Hönig, Walter Jaffe +4
The "torus" is the central element of the most popular theory unifying various classes of AGNs, but it is usually described as "putative" because it has not been imaged yet. Since…
Locating dust and molecules in the inner circumstellar environment of R~Sculptoris with MATISSE
Julien Drevon, Florentin Millour, Pierre Cruzalèbes +49
AGB stars are one of the main sources of dust production in the Galaxy. However, it is not clear what this process looks like and where the dust is condensing in the circumstellar…
Observing the Seyfert 2 nucleus of NGC 1068 with the VLT Interferometer
Huub Rottgering, Walter Jaffe, Klaus Meisenheimer +4
Dusty tori have been suggested to play a crucial role in determining the physical characteristics of active galactic nuclei (AGN), but investigation of their properties has stalled…