Search Results - "Balsiger, Hans"

Elemental and molecular abundances in comet 67P/Churyumov-Gerasimenko by Rubin, Martin, Altwegg, Kathrin, Balsiger, Hans, Berthelier, Jean-Jacques, Combi, Michael R, De Keyser, Johan, Drozdovskaya, Maria, Fiethe, Björn, Fuselier, Stephen A, Gasc, Sébastien, Gombosi, Tamas I, Hänni, Nora, Hansen, Kenneth C, Mall, Urs, Rème, Henri, Schroeder, Isaac R H G, Schuhmann, Markus, Sémon, Thierry, Waite, Jack H, Wampfler, Susanne F, Wurz, Peter

“…ABSTRACT Comets are considered to be some of the most pristine and unprocessed Solar system objects accessible to in situ exploration. Investigating their…”
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Change of outgassing pattern of 67P/Churyumov–Gerasimenko during the March 2016 equinox as seen by ROSINA by Gasc, Sébastien, Altwegg, Kathrin, Balsiger, Hans, Berthelier, Jean-Jacques, Bieler, André, Calmonte, Ursina, Fiethe, Björn, Fuselier, Stephen, Galli, André, Gombosi, Tamas, Hoang, Margaux, De Keyser, Johan, Korth, Axel, Le Roy, Léna, Mall, Urs, Rème, Henri, Rubin, Martin, Sémon, Thierry, Tzou, Chia-Yu, Waite, Jack Hunter, Wurz, Peter

“…Abstract As the spin axis of comet 67P/Churyumov–Gerasimenko (67P) is not normal to the orbital plane, 67P has strong seasonal changes in the illumination…”
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Prebiotic chemicals-amino acid and phosphorus-in the coma of comet 67P/Churyumov-Gerasimenko by Altwegg, Kathrin, Balsiger, Hans, Bar-Nun, Akiva, Berthelier, Jean-Jacques, Bieler, Andre, Bochsler, Peter, Briois, Christelle, Calmonte, Ursina, Combi, Michael R, Cottin, Hervé, De Keyser, Johan, Dhooghe, Frederik, Fiethe, Bjorn, Fuselier, Stephen A, Gasc, Sébastien, Gombosi, Tamas I, Hansen, Kenneth C, Haessig, Myrtha, Jäckel, Annette, Kopp, Ernest, Korth, Axel, Le Roy, Lena, Mall, Urs, Marty, Bernard, Mousis, Olivier, Owen, Tobias, Rème, Henri, Rubin, Martin, Sémon, Thierry, Tzou, Chia-Yu, Hunter Waite, James, Wurz, Peter

“…The importance of comets for the origin of life on Earth has been advocated for many decades. Amino acids are key ingredients in chemistry, leading to life as…”
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Evidence of ammonium salts in comet 67P as explanation for the nitrogen depletion in cometary comae by Altwegg, Kathrin, Balsiger, Hans, Hänni, Nora, Rubin, Martin, Schuhmann, Markus, Schroeder, Isaac, Sémon, Thierry, Wampfler, Susanne, Berthelier, Jean-Jacques, Briois, Christelle, Combi, Mike, Gombosi, Tamas I., Cottin, Hervé, De Keyser, Johan, Dhooghe, Frederik, Fiethe, Björn, Fuselier, Steven A.

“…Cometary comae are generally depleted in nitrogen. The main carriers for volatile nitrogen in comets are NH 3 and HCN. It is known that ammonia readily…”
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Evidence for distributed gas sources of hydrogen halides in the coma of comet 67P/Churyumov–Gerasimenko by De Keyser, Johan, Dhooghe, Frederik, Altwegg, Kathrin, Balsiger, Hans, Berthelier, Jean-Jacques, Briois, Christelle, Calmonte, Ursina, Cessateur, Gaël, Combi, Michael R., Equeter, Eddy, Fiethe, Björn, Fuselier, Stephen, Gasc, Sébastien, Gibbons, Andrew, Gombosi, Tamas, Gunell, Herbert, Hässig, Myrtha, Le Roy, Léna, Maggiolo, Romain, Mall, Urs, Marty, Bernard, Neefs, Eddy, Rème, Henri, Rubin, Martin, Sémon, Thierry, Tzou, Chia-Yu, Wurz, Peter

“…Abstract Rosetta has detected the presence of the hydrogen halides HF, HCl, and HBr in the coma of comet 67P/Churyumov–Gerasimenko. These species are known to…”
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HIGH-TIME RESOLUTION IN SITU INVESTIGATION OF MAJOR COMETARY VOLATILES AROUND 67P/C-G AT 3.1-2.3 au MEASURED WITH ROSINA-RTOF by Mall, U., Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J.-J., Bieler, A., Bochsler, P., Briois, C., Calmonte, U., Combi, M. R., Dabrowski, B., Keyser, J. De, Dhooghe, F., Fiethe, B., Fuselier, S. A., Galli, A., Garnier, P., Gasc, S., Gombosi, T. I., Hansen, K. C., Hässig, M., Hoang, M., Jäckel, A., Kopp, E., Korth, A., Roy, L. Le, Magee, B., Marty, B., Mousis, O., Rème, H., Rubin, M., Sémon, T., Tzou, C.-Y., Waite, J. H., Wurz, P.

“…ABSTRACT Comets considered to be pristine objects contain key information about the early formation of the solar system. Their volatile components can provide…”
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Detection of argon in the coma of comet 67P/Churyumov-Gerasimenko by Balsiger, Hans, Altwegg, Kathrin, Bar-Nun, Akiva, Berthelier, Jean-Jacques, Bieler, Andre, Bochsler, Peter, Briois, Christelle, Calmonte, Ursina, Combi, Michael, De Keyser, Johan, Eberhardt, Peter, Fiethe, Björn, Fuselier, Stephen A, Gasc, Sébastien, Gombosi, Tamas I, Hansen, Kenneth C, Hässig, Myrtha, Jäckel, Annette, Kopp, Ernest, Korth, Axel, Le Roy, Lena, Mall, Urs, Marty, Bernard, Mousis, Olivier, Owen, Tobias, Rème, Henri, Rubin, Martin, Sémon, Thierry, Tzou, Chia-Yu, Waite, J Hunter, Wurz, Peter

“…Comets have been considered to be representative of icy planetesimals that may have contributed a significant fraction of the volatile inventory of the…”
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Monte Carlo modeling of neutral gas and dust in the coma of Comet 1P/Halley by Rubin, Martin, Tenishev, Valeriy M., Combi, Michael R., Hansen, Kenneth C., Gombosi, Tamas I., Altwegg, Kathrin, Balsiger, Hans

“…► Direct Simulation Monte Carlo model of Comet 1P/Halley’s coupled neutral gas and dust coma. ► In situ measurements as well as remote sensing observations…”
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Cometary Chemistry and the Origin of Icy Solar System Bodies: The View After Rosetta by Altwegg, Kathrin, Balsiger, Hans, Fuselier, Stephen A

“…In situ research of cometary chemistry began when measurements from the Giotto mission at Comet 1P Halley revealed the presence of complex organics in the…”
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Sulphur-bearing species in the coma of comet 67P/Churyumov–Gerasimenko by Calmonte, U., Altwegg, K., Balsiger, H., Berthelier, J. J., Bieler, A., Cessateur, G., Dhooghe, F., van Dishoeck, E. F., Fiethe, B., Fuselier, S. A., Gasc, S., Gombosi, T. I., Hässig, M., Le Roy, L., Rubin, M., Sémon, T., Tzou, C.-Y., Wampfler, S. F.

“…Several sulphur-bearing species have already been observed in different families of comets. However, the knowledge on the minor sulphur species is still…”
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Organics in comet 67P – a first comparative analysis of mass spectra from ROSINA–DFMS, COSAC and Ptolemy by Altwegg, Kathrin, Balsiger, H., Berthelier, J.J., Bieler, A., Calmonte, U., Fuselier, S.A., Goesmann, F., Gasc, S., Gombosi, T. I., Le Roy, L., de Keyser, J., Morse, A., Rubin, M., Schuhmann, M., Taylor, M. G. G. T, Tzou, C.-Y., Wright, I.

“…Abstract The ESA Rosetta spacecraft followed comet 67P at a close distance for more than 2 yr. In addition, it deployed the lander Philae on to the surface of…”
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Abundant molecular oxygen in the coma of comet 67P/Churyumov–Gerasimenko by Bieler, A., Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J.-J., Bochsler, P., Briois, C., Calmonte, U., Combi, M., De Keyser, J., van Dishoeck, E. F., Fiethe, B., Fuselier, S. A., Gasc, S., Gombosi, T. I., Hansen, K. C., Hässig, M., Jäckel, A., Kopp, E., Korth, A., Le Roy, L., Mall, U., Maggiolo, R., Marty, B., Mousis, O., Owen, T., Rème, H., Rubin, M., Sémon, T., Tzou, C.-Y., Waite, J. H., Walsh, C., Wurz, P.

“…In situ measurement of O 2 in the coma of comet 67P/Churyumov–Gerasimenko shows local abundances ranging from one per cent to ten per cent relative to H 2 O;…”
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67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio by Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J. J., Bieler, A., Bochsler, P., Briois, C., Calmonte, U., Combi, M., De Keyser, J., Eberhardt, P., Fiethe, B., Fuselier, S., Gasc, S., Gombosi, T. I., Hansen, K.C., Hässig, M., Jäckel, A., Kopp, E., Korth, A., LeRoy, L., Mall, U., Marty, B., Mousis, O., Neefs, E., Owen, T., Rème, H., Rubin, M., Sémon, T., Tzou, C.-Y., Waite, H., Wurz, P.

“…The provenance of water and organic compounds on Earth and other terrestrial planets has been discussed for a long time without reaching a consensus. One of…”
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Xenon isotopes in 67P/Churyumov-Gerasimenko show that comets contributed to Earth's atmosphere by Marty, B., Altwegg, K., Balsiger, H., Bar-Nun, A., Bekaert, D. V., Berthelier, J.-J., Bieler, A., Briois, C., Calmonte, U., Combi, M., De Keyser, J., Fiethe, B., Fuselier, S. A., Gasc, S., Gombosi, T. I., Hansen, K. C., Hässig, M., Jäckel, A., Kopp, E., Korth, A., Le Roy, L., Mall, U., Mousis, O., Owen, T., Rème, H., Rubin, M., Sémon, T., Tzou, C.-Y., Waite, J. H., Wurz, P.

“…The origin of cometary matter and the potential contribution of comets to inner-planet atmospheres are long-standing problems. During a series of dedicated…”
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Time variability and heterogeneity in the coma of 67P/Churyumov-Gerasimenko by Hässig, M., Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J. J., Bieler, A., Bochsler, P., Briois, C., Calmonte, U., Combi, M., De Keyser, J., Eberhardt, P., Fiethe, B., Fuselier, S. A., Galand, M., Gasc, S., Gombosi, T. I., Hansen, K. C., Jäckel, A., Keller, H. U., Kopp, E., Korth, A., Kührt, E., Le Roy, L., Mall, U., Marty, B., Mousis, O., Neefs, E., Owen, T., Rème, H., Rubin, M., Sémon, T., Tornow, C., Tzou, C.-Y., Waite, J. H., Wurz, P.

“…Comets contain the best-preserved material from the beginning of our planetary system. Their nuclei and comae composition reveal clues about physical and…”
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ALMA and ROSINA detections of phosphorus-bearing molecules: the interstellar thread between star-forming regions and comets by Rivilla, V M, Drozdovskaya, M N, Altwegg, K, Caselli, P, Beltrán, M T, Fontani, F, van der Tak, F F S, Cesaroni, R, Vasyunin, A, Rubin, M, Lique, F, Marinakis, S, Testi, L, Balsiger, H, Berthelier, J J, De Keyser, J, Fiethe, B, Fuselier, S A, Gasc, S, Gombosi, T I, Sémon, T, Tzou, C-Y

“…ABSTRACT To understand how phosphorus (P)-bearing molecules are formed in star-forming regions, we have analysed the Atacama Large Millimeter/Submillimeter…”
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Molecular nitrogen in comet 67P/Churyumov-Gerasimenko indicates a low formation temperature by Rubin, M., Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J.-J., Bieler, A., Bochsler, P., Briois, C., Calmonte, U., Combi, M., De Keyser, J., Dhooghe, F., Eberhardt, P., Fiethe, B., Fuselier, S. A., Gasc, S., Gombosi, T. I., Hansen, K. C., Hässig, M., Jäckel, A., Kopp, E., Korth, A., Le Roy, L., Mall, U., Marty, B., Mousis, O., Owen, T., Réme, H., Sémon, T., Tzou, C.-Y., Waite, J. H., Wurz, P.

“…Molecular nitrogen (N2) is thought to have been the most abundant form of nitrogen in the protosolar nebula. It is the main N-bearing molecule in the…”
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Origins of volatile elements (H, C, N, noble gases) on Earth and Mars in light of recent results from the ROSETTA cometary mission by Marty, Bernard, Avice, Guillaume, Sano, Yuji, Altwegg, Kathrin, Balsiger, Hans, Hässig, Myrtha, Morbidelli, Alessandro, Mousis, Olivier, Rubin, Martin

“…•The ROSETTA spacecraft is currently analyzing the composition of Comet 67P/GC.•From measurements by the ROSINA analyzer, we develop a model of comet…”
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Halogens as tracers of protosolar nebula material in comet 67P/Churyumov–Gerasimenko by Dhooghe, Frederik, De Keyser, Johan, Altwegg, Kathrin, Briois, Christelle, Balsiger, Hans, Berthelier, Jean-Jacques, Calmonte, Ursina, Cessateur, Gaël, Combi, Michael R., Equeter, Eddy, Fiethe, Björn, Fray, Nicolas, Fuselier, Stephen, Gasc, Sébastien, Gibbons, Andrew, Gombosi, Tamas, Gunell, Herbert, Hässig, Myrtha, Hilchenbach, Martin, Le Roy, Léna, Maggiolo, Romain, Mall, Urs, Marty, Bernard, Neefs, Eddy, Rème, Henri, Rubin, Martin, Sémon, Thierry, Tzou, Chia-Yu, Wurz, Peter

“…Abstract We report the first in situ detection of halogens in a cometary coma, that of 67P/Churyumov-Gerasimenko. Neutral gas mass spectra collected by the…”
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Position-dependent microchannel plate gain correction in Rosetta's ROSINA/DFMS mass spectrometer by De Keyser, J., Altwegg, K., Gibbons, A., Dhooghe, F., Balsiger, H., Berthelier, J.-J., Fuselier, S.A., Gombosi, T.I., Neefs, E., Rubin, M.

“…Mass spectrometers that rely on microchannel plate (MCP) detectors age when they are used intensively. The ageing process is due to a reduction of the MCP gain…”
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