Dr. Huub J. Rottgering Profile

Dr. Huub J. Rottgering

at Leiden Observatory

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Author

Publications (8)

Proceedings Article | 20 October 2004 Paper

Observing the Seyfert 2 nucleus of NGC 1068 with the VLT interferometer

Huub Rottgering, Walter Jaffe, Klaus Meisenheimer, Helene Sol, Christoph Leinert, Andrea Richichi, Markus Wittkowski

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.556893

KEYWORDS: Interferometry, Galactic astronomy, Interferometers, Absorption, Spatial resolution, Telescopes, Data modeling, Visibility, Stars, Active galactic nuclei

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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 for lack of high resolution mid-IR imaging. Recently, a long-awaited breakthrough in this field was achieved: NGC 1068, a nearby AGN, was the first extragalactic object to be observed with a mid-IR interferometer, thereby obtaining the needed angular resolution to study the alleged torus. The instrument used was MIDI mounted on the ESO's VLT interferometer. The resulting 8-13 micron interferometric spectra indicated the presence of a thick (3 x 4 parsec) configuration of warm dust surrounding a hot ~1 pc component, marginally elongated in the direction perpendicular to the main orientation of the warm component. The structure of the 10 micron "silicate" absorption feature hinted at the presence of non-typical dust. In this proceeding, first the field of AGN research is briefly reviewed, with an emphasis on models of dusty tori. Second, the general properties of the key object NGC 1068 are discussed. Third, the MIDI data set is presented together with a first attempt to interpret this data in the context of tori models. Fourth, preliminary MIDI interferometric spectra of the nucleus of the nearby starbursting galaxy Circinus are presented. The apparent observed absence of both a hot component as well as a sharp absorption feature suggest that we view the torus more edge-on than is the case for NGC 1068. Finally, we briefly discuss the prospects of ESA's Darwin mission for observing nearby and distant AGN. The required capabilities for Darwin's first goal -- the search for and subsequent characterization of earth-like planets orbiting nearby stars -- are such that for its second goal -- high resolution astrophysical imaging -- the sensitivity will be similar to JWST and the angular resolution 1-2 orders better. This will allow detailed mapping of tori of low luminosity AGN such as NGC 1068 up to redshifts of 1 - 2 and more luminous AGN up to redshift of 10 and beyond.

Proceedings Article | 26 February 2003 Paper

Imaging mode of the infrared space interferometer IRSI-Darwin

Luigi D'Arcio, Jan-Willem den Herder, Rudolf Le Poole, Huub Rottgering

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460744

KEYWORDS: Telescopes, Sensors, Multiplexing, Nulling interferometry, Imaging systems, Interferometers, Space telescopes, Stars, Interferometry, Metrology

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Proceedings Article | 21 February 2003 Paper

NEVEC: the NOVA-ESO VLTI expertise center

Rudolf Le Poole, George Miley, Walter Jaffe, Andreas Glindemann, Eric Bakker, Rens Waters, Huub Roettgering, Bill Cotton, Isabelle Percheron, Jeffrey Meisner, Jeroen de Jong, Luigi D'Arcio, Bjoern Heijligers

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459971

KEYWORDS: Interferometry, Calibration, Astronomy, Atmospheric modeling, Radio telescopes, Stars, Data modeling, Astronomical imaging, Sensors, Binary data

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Proceedings Article | 13 February 2003 Paper

Bright lights, big city: massive galaxies, giant Ly-alpha nebulae, and protoclusters

Willem van Breugel, Michiel Reuland, Willem de Vries, Adam Stanford, Arjun Dey, Jaron Kurk, Bram Venemans, Huub Roettgering, George Miley, Carlos De Breuck, Mike Dopita, Ralph Sutherland, Jonathan Bland-Hawthorn

Proceedings Volume 4834, (2003) https://doi.org/10.1117/12.456509

KEYWORDS: Galactic astronomy, Telescopes, Galaxy groups and clusters, Spectroscopy, Stars, Image filtering, Tunable filters, Spectrographs, Kinematics, Optical filters

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Proceedings Article | 13 February 2003 Paper

Ultradeep near-infrared imaging of HDF-south: rest-frame optical properties of high redshift galaxies

Ivo Labbe, Marijn Franx, Gregory Rudnick, Alan Moorwood, Natascha Foerster Schreiber, Hans-Walter Rix, Lottie van Starkenburg, Peter van Dokkum, Paul van der Werf, Huub Roettgering, Konrad Kuijken

Proceedings Volume 4834, (2003) https://doi.org/10.1117/12.457539

KEYWORDS: Galactic astronomy, Near infrared, Infrared radiation, Spectroscopy, UV optics, Hubble Space Telescope, Ultraviolet radiation, Stars, Optical properties, Infrared imaging

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Proceedings Article | 5 July 2000 Paper

Astrophysical potentials of the MIDI VLTI instrument

Bruno Lopez, Christoph Leinert, Uwe Graser, Laurens Waters, Guy Perrin, Thomas Herbst, Huub Roettgering, Daniel Rouan, Bringfried Stecklum, Reinhard Mundt, Hans Zinnecker, Patrick de Laverny, Markus Feldt, Jeffrey Meisner, Anne Dutrey, Thomas Henning, Farrokh Vakili

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390246

KEYWORDS: Visibility, Stars, Planets, Spatial frequencies, Telescopes, Astatine, Interferometry, Error analysis, Exoplanets, Active galactic nuclei

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Proceedings Article | 5 July 2000 Paper

Scientific potential of infrared interferometry from space

Huub Roettgering, GianLuigi Granato, Bruno Guiderdoni, Gregory Rudnick

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390274

KEYWORDS: Galactic astronomy, Stars, Planets, Infrared radiation, Interferometry, Telescopes, Astronomy, Ions, Tin, Interferometers

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Proceedings Article | 29 June 2000 Paper

VLT observations of high redshift extremely red galaxies

Andrea Cimatti, E. Daddi, Sperello di Serego Alighieri, G. Moriondo, L. Pozzetti, Filippo Mannucci, Alvio Renzini, Ernesto Oliva, G. Zamorani, P. Andreani, Huub Rottgering

Proceedings Volume 4005, (2000) https://doi.org/10.1117/12.390159

KEYWORDS: Galactic astronomy, Surface conduction electron emitter displays, Photometry, Stars, Spectroscopy, Telescopes, Imaging spectroscopy, Near infrared spectroscopy, Galaxy evolution, Optical filters

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Showing 5 of 8 publications

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