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Search for satellit...
Search for satellites near comet 67P/Churyumov-Gerasimenko using Rosetta/OSIRIS images
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- Bertini, I. (författare)
- Univ Padua, Ctr Studies & Act Space CISAS G Colombo, I-35131 Padua, Italy.
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- Gutierrez, P. J. (författare)
- CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain.
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- Lara, L. M. (författare)
- CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain.
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visa fler...
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- Marzari, F. (författare)
- Univ Padua, Dept Phys & Astron G Galilei, I-35122 Padua, Italy.
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- Moreno, F. (författare)
- CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain.
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- Pajola, M. (författare)
- Univ Padua, Ctr Studies & Act Space CISAS G Colombo, I-35131 Padua, Italy.
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- La Forgia, F. (författare)
- Univ Padua, Dept Phys & Astron G Galilei, I-35122 Padua, Italy.
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- Sierks, H. (författare)
- Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.
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- Barbieri, C. (författare)
- Univ Padua, Dept Phys & Astron G Galilei, I-35122 Padua, Italy.
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- Lamy, P. (författare)
- CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille 13, France.;Aix Marseille Univ, F-13388 Marseille 13, France.
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- Rodrigo, R. (författare)
- CSIC INTA, Ctr Astrobiol, Madrid 28850, Spain.;Int Space Sci Inst, CH-3012 Bern, Switzerland.
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- Koschny, D. (författare)
- European Space Agcy, Res & Sci Support Dept, NL-2201 Noordwijk, Netherlands.
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- Rickman, Hans (författare)
- Uppsala universitet,Teoretisk astrofysik
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- Keller, H. U. (författare)
- Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany.
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- Agarwal, J. (författare)
- Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.
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- A'Hearn, M. F. (författare)
- Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
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- Barucci, M. A. (författare)
- Univ Paris Diderot, Univ Paris 06, CNRS, LESIA,Observ Paris, F-92195 Meudon Pricipal, France.
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Bertaux, J. -L (författare)
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- Cremonese, G. (författare)
- INAF Osservatorio Astron Padova, I-35122 Padua, Italy.
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- Da Deppo, V. (författare)
- CNR IFN UOS Padova LUXOR, I-35131 Padua, Italy.
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- Davidsson, Björn (författare)
- Uppsala universitet,Teoretisk astrofysik
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- Debei, S. (författare)
- Univ Padua, Dept Ind Engn, I-35131 Padua, Italy.
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- De Cecco, M. (författare)
- Univ Trent, UNITN, I-38100 Trento, Italy.
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- Ferri, F. (författare)
- Univ Padua, Ctr Studies & Act Space CISAS G Colombo, I-35131 Padua, Italy.
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- Fornasier, S. (författare)
- Univ Paris Diderot, Univ Paris 06, CNRS, LESIA,Observ Paris, F-92195 Meudon Pricipal, France.;Univ Paris Diderot, Sorbonne Paris Cite, F-75205 Paris 13, France.
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- Fulle, M. (författare)
- INAF Osservatorio Astron Trieste, I-34143 Trieste, Italy.
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- Giacomini, L. (författare)
- Univ Padua, Dept Geosci, I-35131 Padua, Italy.
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- Groussin, O. (författare)
- Aix Marseille Univ, CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille, France.
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- Guettler, C. (författare)
- Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.
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- Hviid, S. F. (författare)
- DLR, Inst Planetary Res, D-12489 Berlin, Germany.
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Ip, W. -H (författare)
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- Jorda, L. (författare)
- Aix Marseille Univ, CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille, France.
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- Knollenberg, J. (författare)
- DLR, Inst Planetary Res, D-12489 Berlin, Germany.
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- Kramm, J. R. (författare)
- Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.
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- Kuehrt, E. (författare)
- DLR, Inst Planetary Res, D-12489 Berlin, Germany.
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- Kueppers, M. (författare)
- ESA ESAC, Villanueva De La Canada 28691, Spain.
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- Lazzarin, M. (författare)
- Univ Padua, Dept Phys & Astron G Galilei, I-35122 Padua, Italy.
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- Lopez Moreno, J. J. (författare)
- CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain.
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- Magrin, S. (författare)
- Univ Padua, Dept Phys & Astron G Galilei, I-35122 Padua, Italy.
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- Massironi, M. (författare)
- Univ Padua, Dept Geosci, I-35131 Padua, Italy.
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- Michalik, H. (författare)
- Inst Datentech & Kommunikat Netze, D-38106 Braunschweig, Germany.
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- Mottola, S. (författare)
- DLR, Inst Planetary Res, D-12489 Berlin, Germany.
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- Naletto, G. (författare)
- Univ Padua, Ctr Studies & Act Space CISAS G Colombo, I-35131 Padua, Italy.;CNR IFN UOS Padova LUXOR, I-35131 Padua, Italy.;Univ Padua, Dept Informat Engn, I-35131 Padua, Italy.
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- Oklay, N. (författare)
- Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.
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- Thomas, N. (författare)
- Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.
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- Tubiana, C. (författare)
- Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.
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Vincent, J. -B (författare)
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Univ Padua, Ctr Studies & Act Space CISAS G Colombo, I-35131 Padua, Italy CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain. (creator_code:org_t)
- 2015-10-30
- 2015
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 583
- Relaterad länk:
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Context. The European Space Agency Rosetta mission reached and started escorting its main target, the Jupiter-family comet 67P/Churyumov-Gerasimenko, at the beginning of August 2014. Within the context of solar system small bodies, satellite searches from approaching spacecraft were extensively used in the past to study the nature of the visited bodies and their collisional environment. Aims. During the approaching phase to the comet in July 2014, the OSIRIS instrument onboard Rosetta performed a campaign aimed at detecting objects in the vicinity of the comet nucleus and at measuring these objects' possible bound orbits. In addition to the scientific purpose, the search also focused on spacecraft security to avoid hazardous material in the comet's environment. Methods. Images in the red spectral domain were acquired with the OSIRIS Narrow Angle Camera, when the spacecraft was at a distance between 5785 km and 5463 km to the comet, following an observational strategy tailored to maximize the scientific outcome. From the acquired images, sources were extracted and displayed to search for plausible displacements of all sources from image to image. After stars were identified, the remaining sources were thoroughly analyzed. To place constraints on the expected displacements of a potential satellite, we performed Monte Carlo simulations on the apparent motion of potential satellites within the Hill sphere. Results. We found no unambiguous detections of objects larger than similar to 6 m within similar to 20 km and larger than similar to 1 m between similar to 20 km and similar to 110 km from the nucleus, using images with an exposure time of 0.14 s and 1.36 s, respectively. Our conclusions are consistent with independent works on dust grains in the comet coma and on boulders counting on the nucleus surface. Moreover, our analysis shows that the comet outburst detected at the end of April 2014 was not strong enough to eject large objects and to place them into a stable orbit around the nucleus. Our findings underline that it is highly unlikely that large objects survive for a long time around cometary nuclei.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- comets: general
- comets: individual: 67P/Churyumov-Gerasimenko
- planets and satellites: detection
- techniques: photometric
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Till lärosätets databas
- Av författaren/redakt...
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Bertini, I.
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Gutierrez, P. J.
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Lara, L. M.
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Marzari, F.
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Moreno, F.
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Pajola, M.
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visa fler...
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La Forgia, F.
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Sierks, H.
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Barbieri, C.
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Lamy, P.
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Rodrigo, R.
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Koschny, D.
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Rickman, Hans
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Keller, H. U.
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Agarwal, J.
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A'Hearn, M. F.
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Barucci, M. A.
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Bertaux, J. -L
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Cremonese, G.
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Da Deppo, V.
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Davidsson, Björn
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Debei, S.
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De Cecco, M.
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Ferri, F.
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Fornasier, S.
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Fulle, M.
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Giacomini, L.
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Groussin, O.
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Guettler, C.
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Hviid, S. F.
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Ip, W. -H
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Jorda, L.
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Knollenberg, J.
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Kramm, J. R.
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Kuehrt, E.
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Kueppers, M.
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Lazzarin, M.
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Lopez Moreno, J. ...
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Magrin, S.
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Massironi, M.
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Michalik, H.
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Mottola, S.
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Naletto, G.
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Oklay, N.
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Thomas, N.
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Tubiana, C.
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Vincent, J. -B
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