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See detailComet C/2001 Q4 (NEAT) at its closest approach to the Earth
Tozzi, G. P.; Boehnhardt, H.; Del Bo, M. et al

in American Astronomical Society, DPS meeting #36 (2004, November 01)

Comet C/2001 Q4 (NEAT) was observed at ESO (La Silla) for three consecutive nights at the beginning of May, 2004 at its closest approach to Earth. The observations consisted of quasi-simultaneous multi ... [more ▼]

Comet C/2001 Q4 (NEAT) was observed at ESO (La Silla) for three consecutive nights at the beginning of May, 2004 at its closest approach to Earth. The observations consisted of quasi-simultaneous multi-wavelength exposures in the visible, near-IR and thermal-IR in order to study different properties of the solid component that are responsible for the scattering and emission of radiation in different spectral ranges. The comet was observed with the 3.6m telescope, equipped with TIMMI2 for the thermal-IR region, the NTT, equipped with EMMI and SOFI for the visible and near-IR regions. Narrow band images and long slit spectra were recorded for each spectral region. In the near-IR range, polarimetric observations were also performed during the last night. The aim of the observations was the characterization of the solid component at small scalelength to search for possible short lifetime organic components, as those found in the comet C/2000 WM1 (Tozzi et al., 2004, A&A, 424, 235), dust fragmentation etc.. Here we report preliminary results of the analysis of these observations. [less ▲]

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See detailComet C/2005 K2 (LINEAR)
Jehin, Emmanuel ULg; Nielsen, O.; Bryssinck, E.

in International Astronomical Union Circulars [=IAUCs] (2005), 8566

IAUC 8566 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2006 P1 (McNaught)
Snodgrass, C.; Fitzsimmons, A.; Hainaut, O. et al

in Central Bureau Electronic Telegrams (CBETs) (2007), 832

CBET 832 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2006 P1 (McNaught)
Jehin, Emmanuel ULg; Manfroid, Jean ULg; Snodgrass, C. et al

in Central Bureau Electronic Telegrams (CBETs) (2007), 832

CBET 832 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2012 S1 (Ison)
Opitom, Cyrielle ULg; Jehin, Emmanuel ULg; Manfroid, Jean ULg et al

in Central Bureau Electronic Telegrams (2013), 3693

CBET 3693 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2012 S1 (Ison)
Lisse, C. M.; Wolk, S. J.; Christian, D. J. et al

in Central Bureau Electronic Telegrams (2013), 3719

CBET 3719 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2012 S1 (Ison)
Crovisier, J.; Colom, P.; Biver, N. et al

in Central Bureau Electronic Telegrams (2013), 3711

CBET 3711 available at Central Bureau for Astronomical Telegrams.

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See detailComet C/2012 S1 (Ison)
Dello Russo, N.; Vervack, R. J.; Kawakita, H. et al

in Central Bureau Electronic Telegrams (2013), 3686

CBET 3686 available at Central Bureau for Astronomical Telegrams.

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See detailComet dust profiles from PACS images obtained in the framework of the HSSO project
Opitom, Cyrielle ULg; Bockelée-Morvan, D.; Hutsemekers, Damien ULg et al

Poster (2013, October)

In the framework of the HssO project the Herschel PACS instrument acquired images of 7 comets between June 2010 and February 2013. Three of these comets have been imaged at several heliocentric distances ... [more ▼]

In the framework of the HssO project the Herschel PACS instrument acquired images of 7 comets between June 2010 and February 2013. Three of these comets have been imaged at several heliocentric distances allowing us to follow up the evolution of the dust coma . Radial profiles have been derived for each image. We measured flux densities at 70, 110 and 160 μm in order to determine the comet dust production rate. In some cases, after deconvolution by the instrumental PSF, we might have detected the nucleus signal in the central pixels. [less ▲]

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See detailComet West (1978a)
West, R. M.; Pizarro, O.; Surdej, Jean ULg

in International Astronomical Union Circulars [=IAUCs] (1978), 3164

IAUC 3164 available at Central Bureau for Astronomical Telegrams.

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See detailCometary emission spectra in the Visual Region.
Swings, Polydore ULg; McKellar, A.; Minkowski, R.

in Astrophysical Journal (1943), 98

A list of wave lengths of the emission features occurring in the region λ > 4800 has been compiled partly on the basis of previously published data but mainly from measurements of spectrograms of the ... [more ▼]

A list of wave lengths of the emission features occurring in the region λ > 4800 has been compiled partly on the basis of previously published data but mainly from measurements of spectrograms of the recent bright comets 1940c and 1942g obtained at the McDonald, the Mount Wilson, and the Dominion Astrophysical observatories. It is indicated that certain of the more prominent features behave, with respect to the comet's heliocentric distance, as emissions from polyatomic molecules would be expected to do. Comparison of the cometary spectrum with that of an oxyammonia flame leads to the suggested identification of a number of the emission features, among them the strong "λ 6300 group," as due to a dissociation product of ammonia, probably NH2. [less ▲]

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See detailCometary Organic Macromolecules in Interplanetary Dust Particles?
Aléon, J.; Arpigny, Claude ULg; Robert, F. et al

in Lunar and Planetary Institute Science Conference Abstracts 34 (2003, March 01)

Based on the determination of N concentrations in D-rich molecules in IDPs and new 14N/15N ratios in comets, it is proposed here that organic chemistry of IDPs may provide a direct link with comets.

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See detailCometary spectra
Swings, Polydore ULg

in Quarterly Journal of the Royal Astronomical Society (1965), 6

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See detailCometary spectra (Council report on the progress at astronomy)
Swings, Polydore ULg

in Monthly Notices of the Royal Astronomical Society (1943), 103

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See detailComète Arend-Roland (1956 h)
Swings, Polydore ULg

in Astronomie (L') (1957), 71

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See detailLa comète C/2007 N3 (Lulin)
Manfroid, Jean ULg

Article for general public (2009)

Not Available

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See detailLa comète d'Halcyon. Poésie en Ecosse aujourd'hui
Glenday, John; Pagnoulle, Christine ULg; Armstrong, Kate et al

Book published by Sources (1998)

John Glenday collected poems by sixteen contemporary Scottish writers using English, Scots or Gaelic, and we translated them into French, with appropriate regional variations. This anthology conveys a ... [more ▼]

John Glenday collected poems by sixteen contemporary Scottish writers using English, Scots or Gaelic, and we translated them into French, with appropriate regional variations. This anthology conveys a sense of the diversity of voices in contemporary Scottish poetry.S [less ▲]

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See detailLa comète de Halley, CNRS
Manfroid, Jean ULg

in Ciel et Terre (1988), 104

Not Available

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See detailLa comète du siècle, McNaught C/2006 P1
Manfroid, Jean ULg; Jehin, Emmanuel ULg

Article for general public (2007)

Not Available

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See detailLa comète qui rencontra Jupiter
Grodent, Denis ULg

Conference given outside the academic context (1995)

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