Borguet, Benoît, Hutsemekers, Damien, Letawe, Géraldine, Letawe, Yannick, Magain, Pierre
Astronomical Polarimetry 2008: Science from Small to Large Telescopes
Borguet, Benoît, Hutsemekers, Damien, Letawe, Géraldine, Letawe, Yannick, Magain, Pierre
Aims.For Seyfert galaxies, the AGN unification model provides a simple and well-established explanation of the type 1/type 2 dichotomy through orientation-based effects. The generalization of this...
Quasar Host Orientation and Polarization: Insights into the Type 1/Type 2 Dichotomy (2008)
Borguet, Benoît, Hutsemekers, Damien, Letawe, Géraldine, Letawe, Yannick, Magain, Pierre
The Nuclear Region, Host Galaxy and Environment of Active Galaxies
Sluse, D, Claeskens, J-F, Hutsemekers, Damien, Surdej, Jean
Aims.We discuss and characterize micro-lensing among the 3 brightest lensed images (A-B-C) of the gravitational lens system RXS J1131-1231 (a quadruply imaged AGN) by means of long slit optical and...
Sluse, D, Claeskens, JF, Hutsemekers, Damien, Surdej, Jean
Aims. We discuss and characterize micro-lensing among the 3 brightest lensed images (A-B-C) of the gravitational lens system RXS J1131-1231 (a quadruply imaged AGN) by means of long slit optical and...
Acceleration and Substructure Constraints in a Quasar Outflow (2007)
Hall, Patrick B., Sadavoy, Sarah I., Hutsemekers, Damien, Everett, John E., Rafiee, Alireza
We present observations of probable line-of-sight acceleration of a broad absorption trough of C IV in the quasar SDSS J024221.87+004912.6. We also discuss how the velocity overlap of two other...
The atypical emission-line star Hen 3-209 (2006)
Naze, Yaël, Rauw, Grégor, Hutsemekers, Damien, Gosset, Eric, Manfroid, Jean, Royer, P
We analyse observations, spanning 15 yr, dedicated to the extreme emission-line object Hen 3-209. Our photometric data indicate that the luminosity of the star undergoes marked variations with a...
Sluse, D, Claeskens, J-F, Altieri, B, Cabanac, R A, Garcet, O, Hutsemekers, Damien, ...
Aims.RXS J113155.4-123155 (z=0.66) is a quadruply imaged lensed quasar with a resolved Einstein Ring. The goal of this paper is to provide a full characterization of this system, and more...
Sluse, D, Claeskens, J*-F, Altieri, B, Cabanac, R A, Garcet, O, Hutsemekers, Damien, ...
Aims.RXS J113155.4-123155 (z=0.66) is a quadruply imaged lensed quasar with a resolved Einstein Ring. The goal of this paper is to provide a full characterization of this system, and more...
Large scale correlations of quasar polarisation vectors: Hints of extreme scale structures? (2005)
Cabanac, Remi A., Hutsemekers, Damien, Sluse, Dominique, Lamy, Herve
A survey measuring quasar polarization vectors has been started in two regions towards the North and South Galactic Poles. Here, We review the discovery of significant correlations of orientations of...
A Lyman-alpha-only AGN from the Sloan Digital Sky Survey (2004)
Hall, Patrick B., Hoversten, Erik A., Tremonti, Christy A., Berk, Daniel E. Vanden, Schneider, Donald P., Strauss, Michael A., ...
The Sloan Digital Sky Survey has discovered a z=2.4917 radio-loud active galactic nucleus (AGN) with a luminous, variable, low-polarization UV continuum, H I two-photon emission, and a moderately...
VLT + UVES spectroscopy of the low-ionization intrinsic absorber in SDSS J001130.56+005550.7 (2004)
Hutsemekers, Damien, Hall, Patrick, Brinkmann, J
We analyse high-resolution VLT+UVES spectra of the low-ionization intrinsic absorber observed in the BAL QSO SDSS J001130.56+005550.7. Two narrow absorption systems at velocities -600 km...
A Ly alpha-only active galactic nucleus from the Sloan Digital Sky Survey (2004)
Hall, Patrick B., Hoversten, E. A., Tremonti, Christy A., Vanden Berk, Daniel E., Schneider, Donald P., Strauss, Michael A., ...
The Sloan Digital Sky Survey has discovered a z = 2.4917 radio-loud active galactic nucleus (AGN) with a luminous, variable, low-polarization UV continuum, H I two-photon emission, and a moderately...
A Ly alpha-only active galactic nucleus from the Sloan Digital Sky Survey (2004)
Hall, Patrick B., Hoversten, E. A., Tremonti, Christy A., Vanden Berk, Daniel E., Schneider, Donald P., Strauss, Michael A., ...
The Sloan Digital Sky Survey has discovered a z = 2.4917 radio-loud active galactic nucleus (AGN) with a luminous, variable, low-polarization UV continuum, H I two-photon emission, and a moderately...
An MHD-driven Disk Wind Outflow in SDSS J0300+0048? (2003)
Hall, Patrick B., Hutsemekers, Damien
The outflow in SDSS J030000.56+004828.0 has the highest low-ionization metal-line column density yet reported for a broad absorption line quasar. The absorption from different ions is also segregated...
A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155 (2003)
Sluse, D, Surdej, Jean, Claeskens, J-F, Hutsemekers, Damien, Jean, C, Courbin, F, ...
We report the discovery of a new quadruply imaged quasar surrounded by an optical Einstein ring candidate. Spectra of the different components of 1RXS J113155.4-123155 reveal a source at z= 0.658. Up...
VLT+UVES Spectroscopy of the CaII LoBAL Quasar SDSS J030000.56+004828.0 (2003)
Hall, Patrick B., Hutsemekers, Damien, Anderson, S. F., Brinkmann, J., Fan, X., Schneider, D. P., ...
We study high-resolution spectra of the `overlapping-trough' low-ionization broad absorption line (LoBAL) quasar SDSS J030000.56+004828.0. The CaII, MgII and MgI column densities in this object are...
VLT Observations of Two Unusual BAL Quasars (2002)
Hall, Patrick B., Hutsemekers, Damien
Among the unusual broad absorption line quasars being found by the Sloan Digital Sky Survey (SDSS) are objects with much stronger absorption in Fe III than Fe II. These unusual line ratios require a...
ESO & NOT photometric monitoring of the Cloverleaf quasar (1997)
Ostensen, R, Remy, M, Lindblad, P O, Refsdal, S, Stabell, R, Surdej, Jean, ...
The Cloverleaf quasar, H1413+117, has been photometrically monitored at ESO (La Silla, Chile) and with the NOT (La Palma, Spain) during the period 1987--1994. All good quality CCD frames have been...
WR22: the most massive Wolf-Rayet star ever weighed. (1996)
Rauw, Grégor, Vreux, J-M, Gosset, Eric, Hutsemekers, Damien, Magain, Pierre, Rochowicz, K
The results of an extensive spectroscopic campaign on the eclipsing binary WR22 are presented. A new radial velocity curve is deduced for the WN7 component, allowing us to improve the parameters of...
Spectropolarimetry of WR66 (1996)
Lamy, H, Hutsemekers, Damien, Rauw, Grégor
We have carried out spectropolarimetric observations of the Wolf-Rayet star WR66 (WN8) with EFOSC1 mounted on the ESO 3.6m telescope of La Silla. The results indicate a polarization level of about 5...
The Clover Leaf Quasar H1413+117: New Photometric Light Curves (1996)
Remy, M, Gosset, Eric, Hutsemekers, Damien, Revenaz, B, Surdej, Jean
Astrophysical applications of gravitational lensing: the 173rd Symposium of the International Astronomical Union
WR22 as a core hydrogen-burning Wolf-Rayet star (1995)
Rauw, Grégor, Vreux, Jean-Marie, Gosset, Eric, Hutsemekers, Damien, Magain, Pierre
The analysis of an extensive sample of high resolution spectra of the Wolf-Rayet binary WR22 recently allowed us to determine a minimum mass of 72 M_solar for the WN7 star. With such a high mass,...
A seven year campaign on WR 22 (1995)
Rauw, Grégor, Vreux, J-M, Gosset, Eric, Hutsemekers, Damien, Magain, Pierre, Manfroid, Jean, ...
Not Available
A seven year campaign on WR 22 (1995)
Rauw, Grégor, Vreux, J-M, Gosset, Eric, Hutsemekers, Damien, Magain, Pierre, Manfroid, Jean, ...
Not Available
Gravitational lensing statistics based on a large sample of highly luminous quasars (1993)
Surdej, Jean, Claeskens, J F, Crampton, D, Filippenko, A V, Hutsemekers, Damien, Magain, Pierre, ...
Results on gravitational lensing statistics applied to a sample of 469 highly luminous quasars are reported. The objects were directly imaged, either from the ground under optimal seeing conditions,...
Erratum - Q:1208+1011 - the Most Distant Multiply Imaged Quasar or a Binary (1993)
Magain, Pierre, Surdej, Jean, Vanderriest, C, Pirenne, B, Hutsemekers, Damien
In the title of this Letter, the word "multiply" was accidentally omitted. The correct title is shown above.
Hutsemekers, Damien, Surdej, Jean, Van Drom, E
Gravitational Lenses in the Universe, Proceedings of the 31st Liege International Astrophysical Colloquium (LIAC 93)
Galaxies statistics around highly luminous quasars: the ESO Sample (1993)
Van Drom, E, Surdej, Jean, Magain, Pierre, Hutsemekers, Damien, Gosset, Eric, Claeskens, J F, ...
31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe"
The cloverleaf quasar H1413+117: a preliminary light curve (1993)
Arnould, P, Remy, M, Gosset, Eric, Hainaut, O, Hutsemekers, Damien, Magain, Pierre, ...
31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe"
Claeskens, J F, Crampton, D, Filippenko, A V, Hutsemekers, Damien, Magain, Pierre, Pirenne, B, ...
31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe"
The relative photometric lightcurve of UM673 A&B (1993)
Daulie, G, Hainaut, O, Hutsemekers, Damien, Magain, Pierre, Remy, M, Smette, A, ...
31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe"
ESO key programme, gravitational lensing: quasars and radio galaxies; a status report (1992)
Surdej, Jean, Angonin, M C, Arnaud, J, Bauer, T, Borgeest, U, Hainaut, O, ...
Distribution of Matter in the Universe, 2nd DAEC mtg
The new gravitational lens candidate Q 1208+1011 and the importance of high quality data. (1992)
Magain, Pierre, Surdej, Jean, Vanderriest, C, Pirenne, B, Hutsemekers, Damien
Not Available
Q 1208 + 1011 - The most distant imaged quasar, or a binary? (1992)
Magain, Pierre, Surdej, Jean, Vanderriest, C, Pirenne, B, Hutsemekers, Damien
The paper reports the discovery of a new gravitational lens candidate: the high redshift (z = 3.803) and highly luminous (V = 17.5, M[SUB]V[/SUB] = -30.3) quasar Q 1208 + 1011. As derived from the...
Optical observations of gravitational lenses (1992)
Surdej, Jean, Claeskens, J F, Hutsemekers, Damien, Magain, Pierre, Pirenne, B
Hamburg conference on ’Gravitational Lenses’, Lecture Notes in Physics 406
Deformation of P Cygni line profiles by gravitational microlensing effects (1992)
Hutsemekers, Damien, Surdej, Jean, Vandrom, E
Gravitational Lenses
Surdej, Jean, Claeskens, J F, Crampton, D, Filippenko, A V, Hutsemekers, Damien, Magain, Pierre, ...
"Science with the Hubble Space Telescope", ESO Conference
Formation of P Cygni line profiles in relativistically expanding atmospheres (1990)
Hutsemekers, Damien, Surdej, Jean
The probabilistic approach of Surdej (1979) is followed to generalize the Sobolev (1958) formalism to the case of special relativity, in order to interpret accurately the P Cygni line profiles...
The nth order moment W(n)D of a resonance doublet P Cygni line profile (1990)
Surdej, Jean, Hutsemekers, Damien
The theory of the nth order moment W(n)D of a P Cygni line profile due to a resonance doublet line transition is developed here in the framework of the Sobolev approximation. It is shown that, in the...
Further observations of the light echoes from SN 1987 A (1990)
Detal, Alain, Surdej, Jean, Hutsemekers, Damien, Remy, M, Van Drom, E
Further direct observations of the light echoes from SN 1987 A were obtained on November 12 1988 with the 3.6-m telescope and EFOSC at ESO. In agreement with predictions made from earlier...
Swings, Jean-Pierre, Magain, Pierre, Remy, M, Surdej, Jean, Smette, A, Hutsemekers, Damien, ...
"Gravitational lensing"
Revisited mass-loss rates for a sample of central stars of planetary nebulae (1989)
Hutsemekers, Damien, Surdej, Jean
Using improved relations for the first order moment of a P Cygni line profile, mass-loss rates have been rederived for a sample of seventeen central stars of planetary nebulae observed with IUE in...
Profiles of a Key Programme: Gravitational Lensing (1989)
Surdej, Jean, Arnaud, J, Borgeest, U, Djorgovski, S, Fleischmann, F, Hammer, F, ...
Prior to Professor van der Laan's enquiry, in the March 1988 issue of the Messenger, on the general interest among astronomers from the European community to possibly participate in Key Programmes...
Revisited Mass-Loss Rates of Planetary Nebula Nuclei Observed with IUE (1989)
Hutsemekers, Damien, Surdej, Jean
Planetary Nebulae. Proceedings of the 131st. Symposium of the International Astronomical Union
A new and improved camera for the 1.5m B&C spectrograph (1989)
Jarvis, B, Hutsemekers, Damien
Not Available
Surdej, Jean, Hutsemekers, Damien
The possibility that the observed broad absorption line (BAL) profiles are formed in spherically symmetric atmospheres is investigated, and it is found that BAL and non-BAL QSOs form two distinct...
Hutsemekers, Damien, Surdej, Jean
The authors present the results of numerical calculations for the first order moment W[SUB]1[/SUB] of subordinate P Cygni line profiles as a function of the parameter...
The structure and spectral characteristics of the low-excitation planetary nebula HD 316248 (1985)
Hutsemekers, Damien, Surdej, Jean
Analysis of two medium dispersion (39 Å/mm) optical spectra of the compact planetary nebula HD 316248 is reported here. When compared with observations collected in 1968 - 70, the authors' data...
Radial velocities along the light curve of the peculiar emission-line star GG Carinae (1985)
Gosset, Eric, Hutsemekers, Damien, Swings, Jean-Pierre, Surdej, Jean
Measurements of the radial velocities of several emission and absorption lines in a large series of high dispersion spectra of the peculiar emission-line object GG Carinae are combined with the...
CPD - 59 deg 2857 - A new red variable star (1985)
Gosset, Eric, Hutsemekers, Damien, Surdej, Jean
Two (C3 and C4) of the four comparison stars monitored during the photometric study of the peculiar emission-line star GG Car (Gosset et al., 1984) have been found to be variable. Available...
The structure and physical conditions characterizing the emission-line galaxy He 2-10 (1984)
Hutsemekers, Damien, Surdej, Jean
Direct plates taken through interference (Halpha+[N II] and [O III]) and broad band (B, R) filters at the prime focus of the ESO 3.6 m telescope reveal the structure of the emission-line galaxy He...