@article{Hassig:2015:10.1126/science.aaa0276,
author = {Hassig, M and Altwegg, K and Balsiger, H and Bar-Nun, A and Berthelier, JJ and Bieler, A and Bochsler, P and Briois, C and Calmonte, U and Combi, M and De, Keyser J and Eberhardt, P and Fiethe, B and Fuselier, SA and Galand, M and Gasc, S and Gombosi, TI and Hansen, KC and Jackel, A and Keller, HU and Kopp, E and Korth, A and Kuehrt, E and Le, Roy L and Mall, U and Marty, B and Mousis, O and Neefs, E and Owen, T and Reme, H and Rubin, M and Semon, T and Tornow, C and Tzou, C-Y and Waite, JH and Wurz, P},
doi = {10.1126/science.aaa0276},
journal = {Science},
title = {Time variability and heterogeneity in the coma of 67P/Churyumov-Gerasimenko},
url = {http://dx.doi.org/10.1126/science.aaa0276},
volume = {347},
year = {2015}
}

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TY  - JOUR
AB  - Comets contain the best-preserved material from the beginning of our planetary system. Their nuclei and comae composition reveal clues about physical and chemical conditions during the early solar system when comets formed. ROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis) onboard the Rosetta spacecraft has measured the coma composition of comet 67P/Churyumov-Gerasimenko with well-sampled time resolution per rotation. Measurements were made over many comet rotation periods and a wide range of latitudes. These measurements show large fluctuations in composition in a heterogeneous coma that has diurnal and possibly seasonal variations in the major outgassing species: water, carbon monoxide, and carbon dioxide. These results indicate a complex coma-nucleus relationship where seasonal variations may be driven by temperature differences just below the comet surface.
AU  - Hassig,M
AU  - Altwegg,K
AU  - Balsiger,H
AU  - Bar-Nun,A
AU  - Berthelier,JJ
AU  - Bieler,A
AU  - Bochsler,P
AU  - Briois,C
AU  - Calmonte,U
AU  - Combi,M
AU  - De,Keyser J
AU  - Eberhardt,P
AU  - Fiethe,B
AU  - Fuselier,SA
AU  - Galand,M
AU  - Gasc,S
AU  - Gombosi,TI
AU  - Hansen,KC
AU  - Jackel,A
AU  - Keller,HU
AU  - Kopp,E
AU  - Korth,A
AU  - Kuehrt,E
AU  - Le,Roy L
AU  - Mall,U
AU  - Marty,B
AU  - Mousis,O
AU  - Neefs,E
AU  - Owen,T
AU  - Reme,H
AU  - Rubin,M
AU  - Semon,T
AU  - Tornow,C
AU  - Tzou,C-Y
AU  - Waite,JH
AU  - Wurz,P
DO  - 10.1126/science.aaa0276
PY  - 2015///
SN  - 0036-8075
TI  - Time variability and heterogeneity in the coma of 67P/Churyumov-Gerasimenko
T2  - Science
UR  - http://dx.doi.org/10.1126/science.aaa0276
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000348225800032&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/21202
VL  - 347
ER  - 

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