Escourgeon et Orge d'hiver fourragers

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2002, September 12)

Escourgeon et Orge d'hiver fourragers

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2005, September 08)

Escourgeon et Orge d'hiver fourragers

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (1999, September 09)

Escourgeon et Orge d'hiver fourragers

in Livre Blanc: Céréales - Gembloux - Informations avant les semis (2001, September 13)

ESO & NOT photometric monitoring of the Cloverleaf quasar

in Astronomy and Astrophysics. Supplement Series (1997), 126

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 ... [more ▼]

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 successfully analysed using two independent methods (i.e. an automatic image decomposition technique and an interactive CLEAN algorithm). The photometric results from the two methods are found to be very similar, and they show that the four lensed QSO images vary significantly in brightness (by up to 0.45 mag), nearly in parallel. The lightcurve of the $D$ component presents some slight departures from the general trend which are very likely caused by micro-lensing effects. Upper limits, at the 99% confidence level, of 150 days on the absolute value for the time delays between the photometric lightcurves of this quadruply imaged variable QSO, are derived. This is unfortunately too large to constrain the lens model but there is little doubt that a better sampling of the lightcurves should allow to accurately derive these time delays. Pending a direct detection of the lensing galaxy (position and redshift), this system thus constitutes another good candidate for a direct and independent determination of the Hubble parameter. Based on observations collected at the European Southern Observatory (La Silla, Chile) and with the Nordic Optical Telescope (La Palma, Spain). Table 1. Logbook for the ESO and NOT observations together with photometric results for the Cloverleaf quasar. This long table can be accessed on the WWW at the URL address: http://vela.astro.ulg.ac.be/grav_lens/glp_homepage.html} [less ▲]

ESO Spectrophotometry of Comet 9P/Tempel 1

in Käufl, H. U.; Sterken, C. (Eds.) Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength (2009)

The Deep Impact target comet 9P/Tempel 1 was observed by means of long-slit spectroscopy from two nights before impact up to eight nights after impact, using the ESO VLT UT1, UT2, and ESO NTT telescopes ... [more ▼]

The Deep Impact target comet 9P/Tempel 1 was observed by means of long-slit spectroscopy from two nights before impact up to eight nights after impact, using the ESO VLT UT1, UT2, and ESO NTT telescopes. Spectra covering the complete optical wavelength range were obtained, and information at different position angles in the coma was collected. The data were used to study the gas and dust activity of comet 9P/Tempel 1. Gas production rates before and after impact and the amount of material in the impact cloud were determined. The pre-impact Afρ parameter, the dust production rate and the dust-to-gas mass ratio were derived. A variation of the cometary gas activity with rotation of the nucleus was detected. A difference in the variation of the brightness of the CN gas emission band compared to the variation of the emissions by C_2, C_3, and NH_2 in the inner coma suggests compositional differences between different parts of the surface of comet 9P/Tempel 1's nucleus. [less ▲]

Espace académique (Discours de rentrée académique au nom de l'association des professeurs de l'ULg)

Speech (2012)

Espace construit

in Lask, Tomke (Ed.) Constructions sociales de l'espace. Les territoires de l'anthropologie de la communication. (2003)

L'espace de jugement des compétences en arts de la scène. Analyse d'un dispositif d'insertion sur le marché du travail des comédiens

in Revue Française de Socio-économie [=RFSE] (2011), 7

This article analyses a public instrument designed for the professional integration of young theatre performers in Belgium’s French Community: the “casting-training internship” (stage audition-formation ... [more ▼]

This article analyses a public instrument designed for the professional integration of young theatre performers in Belgium’s French Community: the “casting-training internship” (stage audition-formation). Drawing on the theoretical framework of the economy of conventions and on some empirical data from inquiries conducted in France, the authors study the innovative dimension of this instrument which allows for a variety of competences evaluation conventions. They also identify two major constraints affecting the conditions of a balanced skills assessment. [less ▲]

L'espace et le jeu chez l'enfant instable

in Joly, Fabien (Ed.) L’enfant hyperactif (2008)