Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development

Z. Y. Lin; W. H. Ip; I. L. Lai; J. C. Lee; J. B. Vincent; L. M. Lara; D. Bodewits; H. Sierks; C. Barbieri; P. L. Lamy; R. Rodrigo; D. Koschny; H. Rickman; H. U. Keller; J. Agarwal; M. F. A'Hearn; M. A. Barucci; J. L. Bertaux; I. Bertini; G. Cremonese; V. Da Deppo; B. Davidsson; S. Debei; M. De Cecco; S. Fornasier; M. Fulle; O. Groussin; P. J. Gutiérrez; C. Güttler; S. F. Hviid; L. Jorda; J. Knollenberg; G. Kovacs; J. R. Kramm; E. Kührt; M. Küppers; F. La Forgia; M. Lazzarin; J. J. López-Moreno; S. Lowry; F. Marzari; H. Michalik; S. Mottola; G. Naletto; N. Oklay; M. Pajola; A. Roek; N. Thomas; Y. Liao; C. Tubiana

doi:10.1051/0004-6361/201525961

Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development

Z. Y. Lin, W. H. Ip, I. L. Lai, J. C. Lee, J. B. Vincent, L. M. Lara, D. Bodewits, H. Sierks, C. Barbieri, P. L. Lamy, R. Rodrigo, D. Koschny, H. Rickman, H. U. Keller, J. Agarwal, M. F. A'Hearn, M. A. Barucci, J. L. Bertaux, I. Bertini, G. CremoneseV. Da Deppo, B. Davidsson, S. Debei, M. De Cecco, S. Fornasier, M. Fulle, O. Groussin, P. J. Gutiérrez, C. Güttler, S. F. Hviid, L. Jorda, J. Knollenberg, G. Kovacs, J. R. Kramm, E. Kührt, M. Küppers, F. La Forgia, M. Lazzarin, J. J. López-Moreno, S. Lowry, F. Marzari, H. Michalik, S. Mottola, G. Naletto, N. Oklay, M. Pajola, A. Roek, N. Thomas, Y. Liao, C. Tubiana

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摘要

Aims. The OSIRIS camera onboard the Rosetta spacecraft obtained close-up views of the dust coma of comet 67P. The jet structures can be used to trace their source regions and to examine the possible effect of gas-surface interaction. Methods. We analyzed the wide-angle images obtained in the special dust observation sequences between August and September 2014. The jet features detected in different images were compared to study their time variability. The locations of the potential source regions of some of the jets are identified by ray tracing. We used a ring-masking technique to calculate the brightness distribution of dust jets along the projected distance. Results. The jets detected between August and September 2014 mostly originated in the Hapi region. Morphological changes appeared over a timescale of several days in September. The brightness slope of the dust jets is much steeper than the background coma. This might be related to the sublimation or fragmentation of the emitted dust grains. Interaction of the expanding gas flow with the cliff walls on both sides of Hapi could lead to erosion and material down-fall to the nucleus surface.

原文	???core.languages.en_GB???
文章編號	A11
期刊	Astronomy and Astrophysics
卷	583
DOIs	https://doi.org/10.1051/0004-6361/201525961
出版狀態	已出版 - 1 11月 2015

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10.1051/0004-6361/201525961

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Lin, Z. Y., Ip, W. H., Lai, I. L., Lee, J. C., Vincent, J. B., Lara, L. M., Bodewits, D., Sierks, H., Barbieri, C., Lamy, P. L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H. U., Agarwal, J., A'Hearn, M. F., Barucci, M. A., Bertaux, J. L., Bertini, I., ... Tubiana, C. (2015). Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development. Astronomy and Astrophysics, 583, [A11]. https://doi.org/10.1051/0004-6361/201525961

@article{2984f6ee0638414682fe536667a68469,

title = "Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development",

abstract = "Aims. The OSIRIS camera onboard the Rosetta spacecraft obtained close-up views of the dust coma of comet 67P. The jet structures can be used to trace their source regions and to examine the possible effect of gas-surface interaction. Methods. We analyzed the wide-angle images obtained in the special dust observation sequences between August and September 2014. The jet features detected in different images were compared to study their time variability. The locations of the potential source regions of some of the jets are identified by ray tracing. We used a ring-masking technique to calculate the brightness distribution of dust jets along the projected distance. Results. The jets detected between August and September 2014 mostly originated in the Hapi region. Morphological changes appeared over a timescale of several days in September. The brightness slope of the dust jets is much steeper than the background coma. This might be related to the sublimation or fragmentation of the emitted dust grains. Interaction of the expanding gas flow with the cliff walls on both sides of Hapi could lead to erosion and material down-fall to the nucleus surface.",

keywords = "Comets: individual: 67P/Churyumov-Gerasimenko",

author = "Lin, {Z. Y.} and Ip, {W. H.} and Lai, {I. L.} and Lee, {J. C.} and Vincent, {J. B.} and Lara, {L. M.} and D. Bodewits and H. Sierks and C. Barbieri and Lamy, {P. L.} and R. Rodrigo and D. Koschny and H. Rickman and Keller, {H. U.} and J. Agarwal and A'Hearn, {M. F.} and Barucci, {M. A.} and Bertaux, {J. L.} and I. Bertini and G. Cremonese and {Da Deppo}, V. and B. Davidsson and S. Debei and {De Cecco}, M. and S. Fornasier and M. Fulle and O. Groussin and Guti{\'e}rrez, {P. J.} and C. G{\"u}ttler and Hviid, {S. F.} and L. Jorda and J. Knollenberg and G. Kovacs and Kramm, {J. R.} and E. K{\"u}hrt and M. K{\"u}ppers and {La Forgia}, F. and M. Lazzarin and L{\'o}pez-Moreno, {J. J.} and S. Lowry and F. Marzari and H. Michalik and S. Mottola and G. Naletto and N. Oklay and M. Pajola and A. Roek and N. Thomas and Y. Liao and C. Tubiana",

note = "Publisher Copyright: {\textcopyright} ESO, 2015.",

year = "2015",

month = nov,

day = "1",

doi = "10.1051/0004-6361/201525961",

language = "???core.languages.en_GB???",

volume = "583",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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Lin, ZY , Ip, WH, Lai, IL, Lee, JC, Vincent, JB, Lara, LM, Bodewits, D, Sierks, H, Barbieri, C, Lamy, PL, Rodrigo, R, Koschny, D, Rickman, H, Keller, HU, Agarwal, J, A'Hearn, MF, Barucci, MA, Bertaux, JL, Bertini, I, Cremonese, G, Da Deppo, V, Davidsson, B, Debei, S, De Cecco, M, Fornasier, S, Fulle, M, Groussin, O, Gutiérrez, PJ, Güttler, C, Hviid, SF, Jorda, L, Knollenberg, J, Kovacs, G, Kramm, JR, Kührt, E, Küppers, M, La Forgia, F, Lazzarin, M, López-Moreno, JJ, Lowry, S, Marzari, F, Michalik, H, Mottola, S, Naletto, G, Oklay, N, Pajola, M, Roek, A, Thomas, N, Liao, Y & Tubiana, C 2015, 'Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development', Astronomy and Astrophysics, 卷 583, A11. https://doi.org/10.1051/0004-6361/201525961

TY - JOUR

T1 - Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko

T2 - Early-phase development

AU - Lin, Z. Y.

AU - Ip, W. H.

AU - Lai, I. L.

AU - Lee, J. C.

AU - Vincent, J. B.

AU - Lara, L. M.

AU - Bodewits, D.

AU - Sierks, H.

AU - Barbieri, C.

AU - Lamy, P. L.

AU - Rodrigo, R.

AU - Koschny, D.

AU - Rickman, H.

AU - Keller, H. U.

AU - Agarwal, J.

AU - A'Hearn, M. F.

AU - Barucci, M. A.

AU - Bertaux, J. L.

AU - Bertini, I.

AU - Cremonese, G.

AU - Da Deppo, V.

AU - Davidsson, B.

AU - Debei, S.

AU - De Cecco, M.

AU - Fornasier, S.

AU - Fulle, M.

AU - Groussin, O.

AU - Gutiérrez, P. J.

AU - Güttler, C.

AU - Hviid, S. F.

AU - Jorda, L.

AU - Knollenberg, J.

AU - Kovacs, G.

AU - Kramm, J. R.

AU - Kührt, E.

AU - Küppers, M.

AU - La Forgia, F.

AU - Lazzarin, M.

AU - López-Moreno, J. J.

AU - Lowry, S.

AU - Marzari, F.

AU - Michalik, H.

AU - Mottola, S.

AU - Naletto, G.

AU - Oklay, N.

AU - Pajola, M.

AU - Roek, A.

AU - Thomas, N.

AU - Liao, Y.

AU - Tubiana, C.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - Aims. The OSIRIS camera onboard the Rosetta spacecraft obtained close-up views of the dust coma of comet 67P. The jet structures can be used to trace their source regions and to examine the possible effect of gas-surface interaction. Methods. We analyzed the wide-angle images obtained in the special dust observation sequences between August and September 2014. The jet features detected in different images were compared to study their time variability. The locations of the potential source regions of some of the jets are identified by ray tracing. We used a ring-masking technique to calculate the brightness distribution of dust jets along the projected distance. Results. The jets detected between August and September 2014 mostly originated in the Hapi region. Morphological changes appeared over a timescale of several days in September. The brightness slope of the dust jets is much steeper than the background coma. This might be related to the sublimation or fragmentation of the emitted dust grains. Interaction of the expanding gas flow with the cliff walls on both sides of Hapi could lead to erosion and material down-fall to the nucleus surface.

AB - Aims. The OSIRIS camera onboard the Rosetta spacecraft obtained close-up views of the dust coma of comet 67P. The jet structures can be used to trace their source regions and to examine the possible effect of gas-surface interaction. Methods. We analyzed the wide-angle images obtained in the special dust observation sequences between August and September 2014. The jet features detected in different images were compared to study their time variability. The locations of the potential source regions of some of the jets are identified by ray tracing. We used a ring-masking technique to calculate the brightness distribution of dust jets along the projected distance. Results. The jets detected between August and September 2014 mostly originated in the Hapi region. Morphological changes appeared over a timescale of several days in September. The brightness slope of the dust jets is much steeper than the background coma. This might be related to the sublimation or fragmentation of the emitted dust grains. Interaction of the expanding gas flow with the cliff walls on both sides of Hapi could lead to erosion and material down-fall to the nucleus surface.

KW - Comets: individual: 67P/Churyumov-Gerasimenko

UR - http://www.scopus.com/inward/record.url?scp=84946575364&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201525961

DO - 10.1051/0004-6361/201525961

M3 - 期刊論文

AN - SCOPUS:84946575364

SN - 0004-6361

VL - 583

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A11

ER -

Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development

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