The perihelion activity of comet 67P/Churyumov-Gerasimenko as seen by robotic telescopes

Snodgrass, C.; Opitom, C.; de Val-Borro, M.; Jehin, Emmanuel; Manfroid, Jean; Lister, T.; Marchant, J.; Jones, G. H.; Fitzsimmons, A.; Steele, I. A.; Smith, R. J.; Jermak, H.; Granzer, T.; Meech, K. J.; Rousselot, P.; Levasseur-Regourd, A.-C.; UPMC (Sorbonne Univ.), B. C.

doi:10.1093/mnras/stw2300

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The perihelion activity of comet 67P/Churyumov-Gerasimenko as seen by robotic telescopes

Snodgrass, C.; Opitom, C.; de Val-Borro, M. et al.

2016 • In Monthly Notices of the Royal Astronomical Society, 462, p. 138-S145

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https://hdl.handle.net/2268/229551

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10.1093/mnras/stw2300

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Keywords :

Comets: individual: 67P/Churyumov-Gerasimenko

Abstract :

[en] Around the time of its perihelion passage, the observability of 67P/Churyumov-Gerasimenko from Earth was limited to very short windows each morning from any given site, due to the low solar elongation of the comet. The peak in the comet's activitywas therefore difficult to observe with conventionally scheduled telescopes, but was possible where service/queue-scheduled mode was possible, and with robotic telescopes. We describe the robotic observations that allowed us to measure the total activity of the comet around perihelion, via photometry (dust) and spectroscopy (gas), and compare these results with the measurements at this time by Rosetta's instruments. The peak of activity occurred approximately twoweeks after perihelion. The total brightness (dust) largely followed the predictions from Snodgrass et al., with no significant change in total activity levels from previous apparitions. The CN gas production rate matched previous orbits near perihelion, but appeared to be relatively low later in the year. © 2017 The Authors.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Snodgrass, C.; School of Physical Sciences, The Open University, Walton Hall, Milton Keynes, United Kingdom

Opitom, C.; Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Aôut 17, Liège, Belgium

de Val-Borro, M.; Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States, NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 691.0, Greenbelt, MD, United States

Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)

Manfroid, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)

Lister, T.; Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive Ste. 102, Goleta, CA, United States

Marchant, J.; Astrophysics Research Institute, Liverpool John Moores University, Liverpool, United Kingdom

Jones, G. H.; Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey, United Kingdom, The Centre for Planetary Sciences at UCL/Birkbeck, Gower Street, London, United Kingdom

Fitzsimmons, A.; Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, BT7 1NN, United Kingdom

Steele, I. A.; Astrophysics Research Institute, Liverpool John Moores University, Liverpool, United Kingdom

More authors (7 more)

Language :

English

Title :

The perihelion activity of comet 67P/Churyumov-Gerasimenko as seen by robotic telescopes

Publication date :

2016

Journal title :

Monthly Notices of the Royal Astronomical Society

ISSN :

0035-8711

eISSN :

1365-2966

Publisher :

Oxford University Press

Volume :

462

Pages :

S138-S145

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://adsabs.harvard.edu/abs/2016MNRAS.462S.138S

Funders :

SFTC - Science and Technology Facilities Council
F.R.S.-FNRS - Fonds de la Recherche Scientifique

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