Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- C. Aerts3 profiles218 · h 67
- L. Decin2 profiles159 · h 49
- H. Van Winckel2 profiles137 · h 15
- S. Poedts134 · h 46
- R. Keppens2 profiles124 · h 43
- H. Sana2 profiles117 · h 44
- A. Tkachenko3 profiles100 · h 26
- C. Maes99 · h 42
- A. de Koter2 profiles96 · h 12
- G. Nelemans90 · h 94
- V. Moshchalkov88 · h 63
- A. Van Proeyen68 · h 6
- Centre National de la Recherche ScientifiqueFR995 papers
- Institute of AstronomyRU531 papers
- Radboud University NijmegenNL455 papers
- University of AmsterdamNL451 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR360 papers
- Observatoire de ParisFR358 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR319 papers
- Royal Observatory of BelgiumBE315 papers
- European Southern ObservatoryCL292 papers
- University of LiègeBE291 papers
- Max Planck Institute for AstronomyDE288 papers
- UCLouvainBE274 papers
31 papers · 2 filters
Evidence for a hot dust-free inner disk around 51 Oph
W. -F. Thi, B. van Dalen, A. Bik +1
We report on the observation of CO bandhead emission around 51 Oph (dv=2). A high resolving power (R~10,000) spectrum was obtained with the infrared spectrometer ISAAC mounted on V…
The influence of chemical composition on the properties of Cepheid stars I - Period-Luminosity relation vs iron abundance
M. Romaniello, F. Primas, M. Mottini +3
We have assessed the influence of the stellar iron content on the Cepheid Period-Luminosity (PL) relation by relating the V band residuals from the Freedman et al (2001) PL relatio…
The evolutionary status of the bright high-latitude supergiant HD190390
Maarten Reyniers, Jan Cuypers
Despite its mean apparent magnitude of m(v)=6.39, the evolutionary status of HD190390 (HR7671), a luminous F-type supergiant at high galactic latitude, is still not very clear, but…
Radiatively driven rotating pair-plasma jets from two component accretion flows
Indranil Chattopadhyay
Centrifugal pressure of matter spiralling onto black holes, have long been known to produce standing or oscillating shocks. The post-shock disc puffs up in the form of a torus, whi…
The Metallicity dependence of the Cepheid Period-Luminosity relation: methodology and results
Marta Mottini, Martino Romaniello, Francesca Primas +3
We present the results of an observational campaign undertaken to assess the influence of the iron content on the Cepheid Period-Luminosity relation. Our data indicate that this de…
Orbital parameters, masses and distance to Beta Centauri determined with the Sydney University Stellar Interferometer and high resolution spectroscopy
J. Davis, A. Mendez, E. B. Seneta +7
The bright southern binary star beta Centauri (HR 5267) has been observed with the Sydney University Stellar Interferometer (SUSI) and spectroscopically with the ESO CAT and Swiss…
How to reconcile the C and s-process abundances in the metal-poor star V453 Oph ?
Pieter Deroo, Stephane Goriely, Lionel Siess +2
In this poster we present a detailed chemical analysis of the RV Tauri star of low intrinsic metallicity, V453 Oph ([Fe/H]=-2.2), which shows a mild but clear s-process surface ove…
Is the solar corona nonmodally self-heated?
B. M. Shergelashvili, A. D. Rogava, S. Poedts
Recently it was pointed out that nonmodally (transiently and/or adiabatically) pre-amplified waves in shear flows, undergoing subsequent viscous damping, can ultimately heat the am…
The mechanism of Swing Absorption of fast magnetosonic waves in inhomogeneous media
B. M. Shergelashvili, T. V. Zaqarashvili, S. Poedts +1
The recently suggested swing interaction between fast magnetosonic and Alfvén waves (2002) is generalized to inhomogeneous media. We show that the fast magnetosonic waves propagati…
GAUDI: a preparatory archive for the COROT mission
E. Solano, C. Catala, R. Garrido +34
The GAUDI database (Ground-based Asteroseismology Uniform Database Interface, http://sdc.laeff.esa.es/gaudi/) is a preparatory archive for the COROT (COnvection, ROtation and plane…
The distance to the Pleiades: Main sequence fitting in the near infrared
S. M. Percival, M. Salaris, M. A. T. Groenewegen
Hipparcos parallax measurements of stars in the Pleiades notoriously result in a cluster distance of 118 pc; ~10% shorter than the `classical' results of MS-fitting. In an earlier…
A purely geometric distance to the binary star Atlas, a member of the Pleiades
N. Zwahlen, P. North, Y. Debernardi +4
We present radial velocity and new interferometric measurements of the double star Atlas, which permit, with the addition of published interferometric data, to precisely derive the…
Chemical analysis of 24 dusty (pre-)main-sequence stars
Bram Acke, Christoffel Waelkens
We have analysed the chemical photospheric composition of 24 Herbig Ae/Be and Vega-type stars in search for the lambda Bootis phenomenon. We present the results of the elemental ab…
[O I] 6300 A Emission from Disks Around Herbig Ae/Be Stars
M. E. van den Ancker, B. Acke, C. P. Dullemond
We present high spectral-resolution optical spectra of 49 Herbig Ae/Be stars in a search for the [O I] 6300.2 A line. The vast majority of the stars in our sample show narrow (FWHM…
'Swing Absorption' of fast magnetosonic waves in inhomogeneous media
B. M. Shergelashvili, T. V. Zaqarashvili, S. Poedts +1
The recently suggested swing interaction between fast magnetosonic and Alfven waves (Zaqarashvili and Roberts 2002) is generalized to inhomogeneous media. We show that the fast mag…
AGB stars in the Local Group, and beyond
Martin Groenewegen
I summarize the current status of surveys for late-type M, and Carbon stars in the Local Group based on three different approaches that make use of the characteristics of these sta…
Improved Baade-Wesselink surface-brightness relations
Martin Groenewegen
Recent, and older accurate, data on (limb-darkened) angular diameters is compiled for 221 stars, as well as BVRIJK[12][25] magnitudes for those objects, when available. Nine stars…
MARCS-Model Stellar Atmospheres, and Their Application to the Photometric Calibration of the Spitzer-IRS
L. Decin, P. W. Morris, P. N. Appleton +3
We describe state-of-the-art MARCS-code model atmospheres generated for a group of A dwarf, G dwarf, and late-G to mid-K giant standard stars, selected to photometrically calibrate…
ISO spectroscopy of disks around Herbig Ae/Be stars
Bram Acke, Mario E. van den Ancker
We have investigated the infrared spectra of all 46 Herbig Ae/Be stars for which spectroscopic data is available in the ISO data archive. Our quantitative analysis of these spectra…
The profiles of the 3 to 12 m PAH features
B. van Diedenhoven, E. Peeters, C. Van Kerckhoven +4
We present spectra of the 3.3 m and 11.2 m PAH features of a large number of (extra-) galactic sources, obtained with ISO-SWS. Clear variations are present in the profiles of…
Long Period Variables in the Magellanic Clouds: OGLE + 2MASS + DENIS
Martin Groenewegen
(abridged) The 68000 I-band light curves of variable stars detected by the OGLE survey in the Large and Small Magellanic Clouds (MCs) are fitted by Fourier series, and also correla…
Correlation between grain growth and disk geometry in Herbig Ae/Be systems
B. Acke, M. E. van den Ancker, C. P. Dullemond +2
We have calculated the (sub-)mm spectral indices of 26 Herbig Ae/Be stars, for which we can determine the infrared spectral energy distribution (SED). We find a clear correlation b…
Evolution of planetary nebulae II. Population effects on the bright cut-off of the PNLF
P. Marigo, L. Girardi, A. Weiss +2
We investigate the bright cut-off of the [OIII]l5007 planetary nebula luminosity function (PNLF), that has been suggested as a powerful extragalactic distance indicator. Theoretica…
The metallicity dependence of the Cepheid PL-relation
M. A. T. Groenewegen, M. Romaniello, F. Primas +1
A sample of 37 Galactic, 10 LMC and 6 SMC cepheids is compiled for which individual metallicity estimates exist and BVIK photometry in almost all cases. The Galactic cepheids all h…