Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta

A. Gicquel; J. B. Vincent; J. Agarwal; M. F. A'Hearn; I. Bertini; D. Bodewits; H. Sierks; Z. Y. Lin; C. Barbieri; P. L. Lamy; R. Rodrigo; D. Koschny; H. Rickman; H. U. Keller; M. A. Barucci; J. L. Bertaux; S. Besse; G. Cremonese; V. Da Deppo; B. Davidsson; S. Debei; J. Deller; M. De Cecco; E. Frattin; M. R. El-Maarry; S. Fornasier; M. Fulle; O. Groussin; P. J. Gutíerrez; P. Gutíerrez-Marquez; C. Guttler; S. Hofner; M. Hofmann; X. Hu; S. F. Hviid; W. H. Ip; L. Jorda; J. Knollenberg; G. Kovacs; J. R. Kramm; E. Kuhrt; M. Kuppers; L. M. Lara; M. Lazzarin; J. J. Lopez Moreno; S. Lowry; F. Marzari; N. Masoumzadeh; M. Massironi; F. Moreno; S. Mottola; G. Naletto; N. Oklay; M. Pajola; A. Pommero; F. Preusker; F. Scholten; X. Shi; N. Thomas; I. Toth; C. Tubiana

doi:10.1093/mnras/stw2117

Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta

A. Gicquel, J. B. Vincent, J. Agarwal, M. F. A'Hearn, I. Bertini, D. Bodewits, H. Sierks, Z. Y. Lin, C. Barbieri, P. L. Lamy, R. Rodrigo, D. Koschny, H. Rickman, H. U. Keller, M. A. Barucci, J. L. Bertaux, S. Besse, G. Cremonese, V. Da Deppo, B. DavidssonS. Debei, J. Deller, M. De Cecco, E. Frattin, M. R. El-Maarry, S. Fornasier, M. Fulle, O. Groussin, P. J. Gutíerrez, P. Gutíerrez-Marquez, C. Guttler, S. Hofner, M. Hofmann, X. Hu, S. F. Hviid, W. H. Ip, L. Jorda, J. Knollenberg, G. Kovacs, J. R. Kramm, E. Kuhrt, M. Kuppers, L. M. Lara, M. Lazzarin, J. J. Lopez Moreno, S. Lowry, F. Marzari, N. Masoumzadeh, M. Massironi, F. Moreno, S. Mottola, G. Naletto, N. Oklay, M. Pajola, A. Pommero, F. Preusker, F. Scholten, X. Shi, N. Thomas, I. Toth, C. Tubiana

Graduate Institute of Astronomy

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov-Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet's dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with theWAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness as a function of the distance of the jet is much steeper than the background coma, which is a first indication of sublimation. We adapted a model of sublimation of icy aggregates and studied the effect as a function of the physical properties of the aggregates (composition and size). The major finding of this paper was that through the sublimation of the aggregates of dirty grains (radius a between 5 and 50 μm) we were able to completely reproduce the radial brightness profile of a jet beyond 4 km from the nucleus. To reproduce the data, we needed to inject a number of aggregates between 8.5 × 1013 and 8.5 × 1010 for a = 5 and 50 μm, respectively, or an initial mass of H2O ice around 22 kg.

Original language	English
Pages (from-to)	S57-S66
Journal	Monthly Notices of the Royal Astronomical Society
Volume	462
DOIs	https://doi.org/10.1093/mnras/stw2117
State	Published - 2016

Keywords

Comets: individual: 67P/Churyumov-Gerasimenko
Methods: data analysis
Methods: numerical
Methods: observational

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10.1093/mnras/stw2117

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Gicquel, A., Vincent, J. B., Agarwal, J., A'Hearn, M. F., Bertini, I., Bodewits, D., Sierks, H., Lin, Z. Y., Barbieri, C., Lamy, P. L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H. U., Barucci, M. A., Bertaux, J. L., Besse, S., Cremonese, G., Da Deppo, V., ... Tubiana, C. (2016). Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta. Monthly Notices of the Royal Astronomical Society, 462, S57-S66. https://doi.org/10.1093/mnras/stw2117

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title = "Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta",

abstract = "Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov-Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet's dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with theWAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness as a function of the distance of the jet is much steeper than the background coma, which is a first indication of sublimation. We adapted a model of sublimation of icy aggregates and studied the effect as a function of the physical properties of the aggregates (composition and size). The major finding of this paper was that through the sublimation of the aggregates of dirty grains (radius a between 5 and 50 μm) we were able to completely reproduce the radial brightness profile of a jet beyond 4 km from the nucleus. To reproduce the data, we needed to inject a number of aggregates between 8.5 × 1013 and 8.5 × 1010 for a = 5 and 50 μm, respectively, or an initial mass of H2O ice around 22 kg.",

keywords = "Comets: individual: 67P/Churyumov-Gerasimenko, Methods: data analysis, Methods: numerical, Methods: observational",

author = "A. Gicquel and Vincent, {J. B.} and J. Agarwal and A'Hearn, {M. F.} and I. Bertini and D. Bodewits and H. Sierks and Lin, {Z. Y.} and C. Barbieri and Lamy, {P. L.} and R. Rodrigo and D. Koschny and H. Rickman and Keller, {H. U.} and Barucci, {M. A.} and Bertaux, {J. L.} and S. Besse and G. Cremonese and {Da Deppo}, V. and B. Davidsson and S. Debei and J. Deller and {De Cecco}, M. and E. Frattin and El-Maarry, {M. R.} and S. Fornasier and M. Fulle and O. Groussin and Gut{\'i}errez, {P. J.} and P. Gut{\'i}errez-Marquez and C. Guttler and S. Hofner and M. Hofmann and X. Hu and Hviid, {S. F.} and Ip, {W. H.} and L. Jorda and J. Knollenberg and G. Kovacs and Kramm, {J. R.} and E. Kuhrt and M. Kuppers and Lara, {L. M.} and M. Lazzarin and {Lopez Moreno}, {J. J.} and S. Lowry and F. Marzari and N. Masoumzadeh and M. Massironi and F. Moreno and S. Mottola and G. Naletto and N. Oklay and M. Pajola and A. Pommero and F. Preusker and F. Scholten and X. Shi and N. Thomas and I. Toth and C. Tubiana",

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year = "2016",

doi = "10.1093/mnras/stw2117",

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volume = "462",

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Gicquel, A, Vincent, JB, Agarwal, J, A'Hearn, MF, Bertini, I, Bodewits, D, Sierks, H, Lin, ZY, Barbieri, C, Lamy, PL, Rodrigo, R, Koschny, D, Rickman, H, Keller, HU, Barucci, MA, Bertaux, JL, Besse, S, Cremonese, G, Da Deppo, V, Davidsson, B, Debei, S, Deller, J, De Cecco, M, Frattin, E, El-Maarry, MR, Fornasier, S, Fulle, M, Groussin, O, Gutíerrez, PJ, Gutíerrez-Marquez, P, Guttler, C, Hofner, S, Hofmann, M, Hu, X, Hviid, SF, Ip, WH, Jorda, L, Knollenberg, J, Kovacs, G, Kramm, JR, Kuhrt, E, Kuppers, M, Lara, LM, Lazzarin, M, Lopez Moreno, JJ, Lowry, S, Marzari, F, Masoumzadeh, N, Massironi, M, Moreno, F, Mottola, S, Naletto, G, Oklay, N, Pajola, M, Pommero, A, Preusker, F, Scholten, F, Shi, X, Thomas, N, Toth, I & Tubiana, C 2016, 'Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta', Monthly Notices of the Royal Astronomical Society, vol. 462, pp. S57-S66. https://doi.org/10.1093/mnras/stw2117

TY - JOUR

T1 - Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta

AU - Gicquel, A.

AU - Vincent, J. B.

AU - Agarwal, J.

AU - A'Hearn, M. F.

AU - Bertini, I.

AU - Bodewits, D.

AU - Sierks, H.

AU - Lin, Z. Y.

AU - Barbieri, C.

AU - Lamy, P. L.

AU - Rodrigo, R.

AU - Koschny, D.

AU - Rickman, H.

AU - Keller, H. U.

AU - Barucci, M. A.

AU - Bertaux, J. L.

AU - Besse, S.

AU - Cremonese, G.

AU - Da Deppo, V.

AU - Davidsson, B.

AU - Debei, S.

AU - Deller, J.

AU - De Cecco, M.

AU - Frattin, E.

AU - El-Maarry, M. R.

AU - Fornasier, S.

AU - Fulle, M.

AU - Groussin, O.

AU - Gutíerrez, P. J.

AU - Gutíerrez-Marquez, P.

AU - Guttler, C.

AU - Hofner, S.

AU - Hofmann, M.

AU - Hu, X.

AU - Hviid, S. F.

AU - Ip, W. H.

AU - Jorda, L.

AU - Knollenberg, J.

AU - Kovacs, G.

AU - Kramm, J. R.

AU - Kuhrt, E.

AU - Kuppers, M.

AU - Lara, L. M.

AU - Lazzarin, M.

AU - Lopez Moreno, J. J.

AU - Lowry, S.

AU - Marzari, F.

AU - Masoumzadeh, N.

AU - Massironi, M.

AU - Moreno, F.

AU - Mottola, S.

AU - Naletto, G.

AU - Oklay, N.

AU - Pajola, M.

AU - Pommero, A.

AU - Preusker, F.

AU - Scholten, F.

AU - Shi, X.

AU - Thomas, N.

AU - Toth, I.

AU - Tubiana, C.

PY - 2016

Y1 - 2016

N2 - Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov-Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet's dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with theWAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness as a function of the distance of the jet is much steeper than the background coma, which is a first indication of sublimation. We adapted a model of sublimation of icy aggregates and studied the effect as a function of the physical properties of the aggregates (composition and size). The major finding of this paper was that through the sublimation of the aggregates of dirty grains (radius a between 5 and 50 μm) we were able to completely reproduce the radial brightness profile of a jet beyond 4 km from the nucleus. To reproduce the data, we needed to inject a number of aggregates between 8.5 × 1013 and 8.5 × 1010 for a = 5 and 50 μm, respectively, or an initial mass of H2O ice around 22 kg.

AB - Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov-Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet's dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with theWAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness as a function of the distance of the jet is much steeper than the background coma, which is a first indication of sublimation. We adapted a model of sublimation of icy aggregates and studied the effect as a function of the physical properties of the aggregates (composition and size). The major finding of this paper was that through the sublimation of the aggregates of dirty grains (radius a between 5 and 50 μm) we were able to completely reproduce the radial brightness profile of a jet beyond 4 km from the nucleus. To reproduce the data, we needed to inject a number of aggregates between 8.5 × 1013 and 8.5 × 1010 for a = 5 and 50 μm, respectively, or an initial mass of H2O ice around 22 kg.

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

KW - Methods: data analysis

KW - Methods: numerical

KW - Methods: observational

UR - http://www.scopus.com/inward/record.url?scp=85012040017&partnerID=8YFLogxK

U2 - 10.1093/mnras/stw2117

DO - 10.1093/mnras/stw2117

M3 - 期刊論文

AN - SCOPUS:85012040017

SN - 0035-8711

VL - 462

SP - S57-S66

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Sublimation of icy aggregates in the coma of comet 67p/churyumov-gerasimenko detected with the osiris cameras on board rosetta

Abstract

Keywords

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