Journal articles
Changes in the Physical Environment of the Inner Coma of 67P/Churyumov–Gerasimenko with Decreasing Heliocentric Distance
Dennis Bodewits
1
Luisa M. Lara
2
Michael F. A'Hearn
3, 1
Florangela La Forgia
4
Adeline Gicquel
5
Gabor Kovacs
5
Jörg Knollenberg
6
Monica Lazzarin
4
Zhong-Yi Lin
7
Xian Shi
5
Colin Snodgrass
8
Cécilia Tubiana
5
Holger Sierks
5
Cesare Barbieri
4
Laurent Lamy
9
Rafael Rodrigo
10, 11
Detlef Koschny
12
Hans Rickman
13
Horst Uwe Keller
14
Maria Antonietta Barucci
15
Jean-Loup Bertaux
16
Ivano Bertini
17
Steve Boudreault
5
Gabriele Cremonese
18
Vania da Deppo
19
Björn Davidsson
13
Stefano Debei
20
Mariolino de Cecco
21
Sonia Fornasier
15
Marco Fulle
22
Olivier Groussin
9
Pedro J. Gutiérrez
2
Carsten Güttler
5
Stubbe F. Hviid
6
Wing-Huen Ip
7
Laurent Jorda
9
J.-Rainer Kramm
5
Ekkehard Kührt
6
Michael Küppers
23
José-Juan López-Moreno
2
Francesco Marzari
4
Giampiero Naletto
17, 24, 19
Nilda Oklay
5
Nicholas Thomas
25
Imre Toth
26
Jean-Baptiste Vincent
5
Dennis Bodewits 1
Author
Luisa M. Lara 2
Author
Michael F. A'Hearn 3, 1
Author
Florangela La Forgia 4
Author
Holger Sierks 5
Author
Cesare Barbieri 4
Author
Laurent Lamy 9
Author IdHAL : laurent-lamy ORCID : https://orcid.org/0000-0002-8428-1369
Rafael Rodrigo 10, 11
Author
Detlef Koschny 12
Author
Hans Rickman 13
Author
Horst Uwe Keller 14
Author
Maria Antonietta Barucci 15
Author
Jean-Loup Bertaux 16
Author
Ivano Bertini 17
Author
Steve Boudreault 5
Author
Gabriele Cremonese 18
Author
Vania da Deppo 19
Author
Björn Davidsson 13
Author
Stefano Debei 20
Author
Mariolino de Cecco 21
Author
Sonia Fornasier 15
Author
Marco Fulle 22
Author
Olivier Groussin 9
Author
Pedro J. Gutiérrez 2
Author
J.-Rainer Kramm 5
Author
Ekkehard Kührt 6
Author
Michael Küppers 23
Author
José-Juan López-Moreno 2
Author
Francesco Marzari 4
Author
Giampiero Naletto 17, 24, 19
Author
Nilda Oklay 5
Author
Nicholas Thomas 25
Author
Imre Toth 26
Author
Jean-Baptiste Vincent 5
Author
1
Department of Astronomy [College Park] (United States)
- University of Maryland [College Park] (College Park, MD 20742 - United States)
- University of Maryland System (United States)
2
IAA - Instituto de Astrofísica de Andalucía (Granada E-18008 - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Madrid] (Serrano 117, 28006 Madrid - Spain)
4
Dipartimento di Fisica e Astronomia "Galileo Galilei" (via Marzolo 8, I-35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
5
MPS - Max-Planck-Institut für Sonnensystemforschung (Göttingen, Allemagne - Germany)
- Max-Planck-Gesellschaft (Jägerstrasse, 10-11, D-10117 Berlin - Germany)
6
DLR Institut für Planetenforschung (Berlin - Germany)
- DLR - Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (Rutherfordstraße 2 12489 Berlin - Germany)
7
IANCU - Institute of Astronomy [Taiwan] (Taoyuan City 32001, Taiwan - Taiwan)
- NCU - National Central University [Taiwan] (300, Zhongda Road, Zhongli District, Taoyuan City, Taïwan 320 - Taiwan)
8
School of Physical Sciences [Milton Keynes] (Faculty of Science, Technology, Engineering and Mathematics, The Open University, Walton Hall, Milton Keynes, MK7 6AA - United Kingdom)
- Faculty of Science, Technology, Engineering and Mathematics [Milton Keynes] (The Open university, Milton Keynes MK7 6AA, United Kingdom - United Kingdom)
- OU - The Open University [Milton Keynes] (Walton Hall, Kents Hill, Milton Keynes MK7 6AA - United Kingdom)
9
LAM - Laboratoire d'Astrophysique de Marseille (Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 - France)
- AMU - Aix Marseille Université : UMR7326 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNES - Centre National d'Études Spatiales [Toulouse] : UMR7326 (18 avenue Edouard Belin 31401 Toulouse - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7326 (France)
10
CAB - Centro de Astrobiologia [Madrid] (28850 Torrejón de Ardoz, Madrid - Spain)
- INTA - Instituto Nacional de Técnica Aeroespacial ( Torrejón de Ardoz, Madrid - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Madrid] (Serrano 117, 28006 Madrid - Spain)
11
ISSI - International Space Science Institute [Bern] (Hallerstrasse 6 3012 Bern - Switzerland)
12
ESTEC - European Space Research and Technology Centre (Keplerlaan 1, 2201 Noordwijk - Netherlands)
- ESA - European Space Agency (France)
13
Department of Physics and Astronomy [Uppsala] (751 05 Uppsala - Sweden)
- Uppsala University (Box 256, SE-751 05 Uppsala - Sweden)
14
IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig] (Mendelssohnstr. 3, D-38106 Braunschweig - Germany)
- Technische Universität Braunschweig [Braunschweig] (38092 Braunschweig - Germany)
15
LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique (5, place Jules Janssen 92190 MEUDON - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 (4 place Jussieu - 75005 Paris - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- UPD7 - Université Paris Diderot - Paris 7 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8109 (France)
16
IMPEC - LATMOS (France)
- LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales (11 boulevard d'Alembert
Quartier des Garennes
78280 - Guyancourt - France)
- UVSQ - Université de Versailles Saint-Quentin-en-Yvelines : UMR8190 (55 avenue de Paris - 78035 Versailles cedex - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 : UMR8190 (4 place Jussieu - 75005 Paris - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR8190 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8190 (France)
17
CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo” (Via Venezia 15, 35131 Padova, Italie - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
18
OAPD - INAF - Osservatorio Astronomico di Padova (Vicolo dell'Osservatorio, 5, 35122 Padova - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
19
IFN - CNR Institute for Photonics and Nanotechnologies (Italy)
- CNR - Consiglio Nazionale delle Ricerche [Roma] (Piazzale Aldo Moro,7 - 00185, Roma - Italy)
20
Department of Mechanical Engineering [Padova] (Via Gradenigo, 6/a - 35131 Padova - Italy)
- Department of Industrial Engineering [Padova] (Dipartimento di Ingegneria Industriale, Via Gradenigo, 6/a, 35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
21
University of Trento [Trento] (via Calepina, 14 - I-38122 Trento
- Italy)
22
OAT - INAF - Osservatorio Astronomico di Trieste (Via G.B. Tiepolo 11 34143 TRIESTE, Italy - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
23
Operations Department (ESAC) (PO Box 78, 28691 Villanueva de la Canada, Madrid - Spain)
- ESAC - European Space Astronomy Centre (Camino bajo del Castillo, s/n, Urbanización Villafranca del Castillo,, Villanueva de la Cañada, E-28692 Madrid
- Spain)
- ESA - European Space Agency (France)
24
DEI - Department of Information Engineering [Padova] (Via Gradenigo, 6/b,
35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
25
Physikalisches Institut [Bern] (Sidlerstr. 5, 3012 Bern - Switzerland)
- Universität Bern [Bern] (Hochschulstrasse 4 - CH-3012 Bern - Switzerland)
26
Konkoly Observatory (Budapest - Hungary)
- Research Centre for Astronomy and Earth Sciences [Budapest] (H-1112 Budapest - Hungary)
- MTA - Hungarian Academy of Sciences (Széchenyi István sqr. 9, 1051 Budapest - Hungary)
Abstract : The Wide Angle Camera of the OSIRIS instrument on board the Rosetta spacecraft is equipped with several narrow-band filters that are centered on the emission lines and bands of various fragment species. These are used to determine the evolution of the production and spatial distribution of the gas in the inner coma of comet 67P with time and heliocentric distance, here between 2.6 and 1.3 au pre-perihelion. Our observations indicate that the emission observed in the OH, O i, CN, NH, and NH2 filters is mostly produced by dissociative electron impact excitation of different parent species. We conclude that CO2 rather than H2O is a significant source of the [O i] 630 nm emission. A strong plume-like feature observed in the CN and O i filters is present throughout our observations. This plume is not present in OH emission and indicates a local enhancement of the CO2/H2O ratio by as much as a factor of 3. We observed a sudden decrease in intensity levels after 2015 March, which we attribute to decreased electron temperatures in the first few kilometers above the surface of the nucleus.
Keywords :
comets
Document type :
Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-01388677
Contributor : Catherine Cardon <>
Submitted on : Saturday, November 28, 2020 - 5:27:49 PM
Last modification on : Monday, January 11, 2021 - 2:16:04 PM
Contributor : Catherine Cardon <>
Submitted on : Saturday, November 28, 2020 - 5:27:49 PM
Last modification on : Monday, January 11, 2021 - 2:16:04 PM
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Identifiers
- HAL Id : insu-01388677, version 1
- ARXIV : 1607.05632
- BIBCODE : 2016AJ....152..130B
- DOI : 10.3847/0004-6256/152/5/130
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Citation
Dennis Bodewits, Luisa M. Lara, Michael F. A'Hearn, Florangela La Forgia, Adeline Gicquel, et al.. Changes in the Physical Environment of the Inner Coma of 67P/Churyumov–Gerasimenko with Decreasing Heliocentric Distance. Astronomical Journal, American Astronomical Society, 2016, 152 (5), pp.130. ⟨10.3847/0004-6256/152/5/130⟩. ⟨insu-01388677⟩
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