Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images

J. D.P. Deshapriya; M. A. Barucci; S. Fornasier; C. Feller; P. H. Hasselmann; H. Sierks; M. R. El-Maarry; M. Pajola; C. Barbieri; P. L. Lamy; R. Rodrigo; D. Koschny; H. Rickman; J. Agarwal; M. F. A'Hearn; J. L. Bertaux; I. Bertini; S. Boudreault; G. Cremonese; V. Da Deppo; B. J.R. Davidsson; S. Debei; J. Deller; M. De Cecco; M. Fulle; A. Gicquel; O. Groussin; P. J. Gutierrez; C. Güttler; M. Hofmann; S. F. Hviid; W. Ip; L. Jorda; H. U. Keller; J. Knollenberg; R. Kramm; E. Kührt; M. Küppers; L. Lara; M. Lazzarin; J. J. Lopez Moreno; F. Marzari; S. Mottola; G. Naletto; N. Oklay; D. Perna; A. Pommerol; N. Thomas; C. Tubiana; J. B. Vincent

doi:10.1093/mnras/stw2530

Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images

J. D.P. Deshapriya, M. A. Barucci, S. Fornasier, C. Feller, P. H. Hasselmann, H. Sierks, M. R. El-Maarry, M. Pajola, C. Barbieri, P. L. Lamy, R. Rodrigo, D. Koschny, H. Rickman, J. Agarwal, M. F. A'Hearn, J. L. Bertaux, I. Bertini, S. Boudreault, G. Cremonese, V. Da DeppoB. J.R. Davidsson, S. Debei, J. Deller, M. De Cecco, M. Fulle, A. Gicquel, O. Groussin, P. J. Gutierrez, C. Güttler, M. Hofmann, S. F. Hviid, W. Ip, L. Jorda, H. U. Keller, J. Knollenberg, R. Kramm, E. Kührt, M. Küppers, L. Lara, M. Lazzarin, J. J. Lopez Moreno, F. Marzari, S. Mottola, G. Naletto, N. Oklay, D. Perna, A. Pommerol, N. Thomas, C. Tubiana, J. B. Vincent

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摘要

Our work focuses on the spectrophotometric analysis of selected terrain and bright patches in the Khonsu region on the comet 67P/Churyumov-Gerasimenko. Despite the variety of geological features, their spectrophotometric properties appear to indicate a similar composition. It is noticeable that the smooth areas in Khonsu possess similar spectrophotometric behaviour to some other regions of the comet. We observed bright patches on Khonsu with an estimation of > 40 per cent of normal albedo and suggest that they are associated with H₂O ice. One of the studied bright patches has been observed to exist on the surface for more than 5 months without a major decay of its size, implying the existence of potential sub-surface icy layers. Its location may be correlated with a cometary outburst during the perihelion passage of the comet in 2015 August, and we interpret it to have triggered the surface modifications necessary to unearth the stratified icy layers beneath the surface. A boulder analysis on Khonsu leads to a power-law index of -3.1 +0.2/-0.3 suggesting a boulder formation, shaped by varying geological processes for different morphological units.

原文	???core.languages.en_GB???
頁（從 - 到）	S274-S286
期刊	Monthly Notices of the Royal Astronomical Society
卷	462
DOIs	https://doi.org/10.1093/mnras/stw2530
出版狀態	已出版 - 2016

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10.1093/mnras/stw2530

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Deshapriya, J. D. P., Barucci, M. A., Fornasier, S., Feller, C., Hasselmann, P. H., Sierks, H., El-Maarry, M. R., Pajola, M., Barbieri, C., Lamy, P. L., Rodrigo, R., Koschny, D., Rickman, H., Agarwal, J., A'Hearn, M. F., Bertaux, J. L., Bertini, I., Boudreault, S., Cremonese, G., ... Vincent, J. B. (2016). Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images. Monthly Notices of the Royal Astronomical Society, 462, S274-S286. https://doi.org/10.1093/mnras/stw2530

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title = "Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images",

abstract = "Our work focuses on the spectrophotometric analysis of selected terrain and bright patches in the Khonsu region on the comet 67P/Churyumov-Gerasimenko. Despite the variety of geological features, their spectrophotometric properties appear to indicate a similar composition. It is noticeable that the smooth areas in Khonsu possess similar spectrophotometric behaviour to some other regions of the comet. We observed bright patches on Khonsu with an estimation of > 40 per cent of normal albedo and suggest that they are associated with H2O ice. One of the studied bright patches has been observed to exist on the surface for more than 5 months without a major decay of its size, implying the existence of potential sub-surface icy layers. Its location may be correlated with a cometary outburst during the perihelion passage of the comet in 2015 August, and we interpret it to have triggered the surface modifications necessary to unearth the stratified icy layers beneath the surface. A boulder analysis on Khonsu leads to a power-law index of -3.1 +0.2/-0.3 suggesting a boulder formation, shaped by varying geological processes for different morphological units.",

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

author = "Deshapriya, {J. D.P.} and Barucci, {M. A.} and S. Fornasier and C. Feller and Hasselmann, {P. H.} and H. Sierks and El-Maarry, {M. R.} and M. Pajola and C. Barbieri and Lamy, {P. L.} and R. Rodrigo and D. Koschny and H. Rickman and J. Agarwal and A'Hearn, {M. F.} and Bertaux, {J. L.} and I. Bertini and S. Boudreault and G. Cremonese and {Da Deppo}, V. and Davidsson, {B. J.R.} and S. Debei and J. Deller and {De Cecco}, M. and M. Fulle and A. Gicquel and O. Groussin and Gutierrez, {P. J.} and C. G{\"u}ttler and M. Hofmann and Hviid, {S. F.} and W. Ip and L. Jorda and Keller, {H. U.} and J. Knollenberg and R. Kramm and E. K{\"u}hrt and M. K{\"u}ppers and L. Lara and M. Lazzarin and {Lopez Moreno}, {J. J.} and F. Marzari and S. Mottola and G. Naletto and N. Oklay and D. Perna and A. Pommerol and N. Thomas and C. Tubiana and Vincent, {J. B.}",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors.",

year = "2016",

doi = "10.1093/mnras/stw2530",

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

volume = "462",

pages = "S274--S286",

journal = "Monthly Notices of the Royal Astronomical Society",

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Deshapriya, JDP, Barucci, MA, Fornasier, S, Feller, C, Hasselmann, PH, Sierks, H, El-Maarry, MR, Pajola, M, Barbieri, C, Lamy, PL, Rodrigo, R, Koschny, D, Rickman, H, Agarwal, J, A'Hearn, MF, Bertaux, JL, Bertini, I, Boudreault, S, Cremonese, G, Da Deppo, V, Davidsson, BJR, Debei, S, Deller, J, De Cecco, M, Fulle, M, Gicquel, A, Groussin, O, Gutierrez, PJ, Güttler, C, Hofmann, M, Hviid, SF, Ip, W, Jorda, L, Keller, HU, Knollenberg, J, Kramm, R, Kührt, E, Küppers, M, Lara, L, Lazzarin, M, Lopez Moreno, JJ, Marzari, F, Mottola, S, Naletto, G, Oklay, N, Perna, D, Pommerol, A, Thomas, N, Tubiana, C & Vincent, JB 2016, 'Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images', Monthly Notices of the Royal Astronomical Society, 卷 462, 頁 S274-S286. https://doi.org/10.1093/mnras/stw2530

TY - JOUR

T1 - Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images

AU - Deshapriya, J. D.P.

AU - Barucci, M. A.

AU - Fornasier, S.

AU - Feller, C.

AU - Hasselmann, P. H.

AU - Sierks, H.

AU - El-Maarry, M. R.

AU - Pajola, M.

AU - Barbieri, C.

AU - Lamy, P. L.

AU - Rodrigo, R.

AU - Koschny, D.

AU - Rickman, H.

AU - Agarwal, J.

AU - A'Hearn, M. F.

AU - Bertaux, J. L.

AU - Bertini, I.

AU - Boudreault, S.

AU - Cremonese, G.

AU - Da Deppo, V.

AU - Davidsson, B. J.R.

AU - Debei, S.

AU - Deller, J.

AU - De Cecco, M.

AU - Fulle, M.

AU - Gicquel, A.

AU - Groussin, O.

AU - Gutierrez, P. J.

AU - Güttler, C.

AU - Hofmann, M.

AU - Hviid, S. F.

AU - Ip, W.

AU - Jorda, L.

AU - Keller, H. U.

AU - Knollenberg, J.

AU - Kramm, R.

AU - Kührt, E.

AU - Küppers, M.

AU - Lara, L.

AU - Lazzarin, M.

AU - Lopez Moreno, J. J.

AU - Marzari, F.

AU - Mottola, S.

AU - Naletto, G.

AU - Oklay, N.

AU - Perna, D.

AU - Pommerol, A.

AU - Thomas, N.

AU - Tubiana, C.

AU - Vincent, J. B.

PY - 2016

Y1 - 2016

N2 - Our work focuses on the spectrophotometric analysis of selected terrain and bright patches in the Khonsu region on the comet 67P/Churyumov-Gerasimenko. Despite the variety of geological features, their spectrophotometric properties appear to indicate a similar composition. It is noticeable that the smooth areas in Khonsu possess similar spectrophotometric behaviour to some other regions of the comet. We observed bright patches on Khonsu with an estimation of > 40 per cent of normal albedo and suggest that they are associated with H2O ice. One of the studied bright patches has been observed to exist on the surface for more than 5 months without a major decay of its size, implying the existence of potential sub-surface icy layers. Its location may be correlated with a cometary outburst during the perihelion passage of the comet in 2015 August, and we interpret it to have triggered the surface modifications necessary to unearth the stratified icy layers beneath the surface. A boulder analysis on Khonsu leads to a power-law index of -3.1 +0.2/-0.3 suggesting a boulder formation, shaped by varying geological processes for different morphological units.

AB - Our work focuses on the spectrophotometric analysis of selected terrain and bright patches in the Khonsu region on the comet 67P/Churyumov-Gerasimenko. Despite the variety of geological features, their spectrophotometric properties appear to indicate a similar composition. It is noticeable that the smooth areas in Khonsu possess similar spectrophotometric behaviour to some other regions of the comet. We observed bright patches on Khonsu with an estimation of > 40 per cent of normal albedo and suggest that they are associated with H2O ice. One of the studied bright patches has been observed to exist on the surface for more than 5 months without a major decay of its size, implying the existence of potential sub-surface icy layers. Its location may be correlated with a cometary outburst during the perihelion passage of the comet in 2015 August, and we interpret it to have triggered the surface modifications necessary to unearth the stratified icy layers beneath the surface. A boulder analysis on Khonsu leads to a power-law index of -3.1 +0.2/-0.3 suggesting a boulder formation, shaped by varying geological processes for different morphological units.

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

KW - Techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=85010780442&partnerID=8YFLogxK

U2 - 10.1093/mnras/stw2530

DO - 10.1093/mnras/stw2530

M3 - 期刊論文

AN - SCOPUS:85010780442

SN - 0035-8711

VL - 462

SP - S274-S286

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images

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