Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta

N. Biver; M. Hofstadter; S. Gulkis; D. Bockelee-Morvan; M. Choukroun; E. Lellouch; F. P. Schloerb; L. Rezac; W. H. Ip; C. Jarchow; P. Hartogh; S. Lee; P. Von Allmen; J. Crovisier; C. Leyrat; P. Encrenaz

doi:10.1051/0004-6361/201526094

Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta

N. Biver, M. Hofstadter, S. Gulkis, D. Bockelee-Morvan, M. Choukroun, E. Lellouch, F. P. Schloerb, L. Rezac, W. H. Ip, C. Jarchow, P. Hartogh, S. Lee, P. Von Allmen, J. Crovisier, C. Leyrat, P. Encrenaz

Graduate Institute of Astronomy

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

59 Scopus citations

Abstract

The Microwave Instrument on the Rosetta Orbiter (MIRO) has been observing the coma of comet 67P/Churyumov-Gerasimenko almost continuously since June 2014 at wavelengths near 0.53 mm. We present here a map of the water column density in the inner coma (within 3 km from nucleus center) when the comet was at 3.4 AU from the Sun. Based on the analysis of the H¹⁶₂O and H¹⁸₂O (110-101) lines, we find that the column density can vary by two orders of magnitude in this region. The highest column density is observed in a narrow region on the dayside, close to the neck and north pole rotation axis of the nucleus, while the lowest column density is seen against the nightside of the nucleus where outgassing seems to be very low. We estimate that the outgassing pattern can be represented by a Gaussian distribution in a solid angle with FWHM ≈ 80°.

Original language	English
Article number	A3
Journal	Astronomy and Astrophysics
Volume	583
DOIs	https://doi.org/10.1051/0004-6361/201526094
State	Published - 1 Nov 2015

Keywords

Comets: general
Comets: individual: 67P/Churyumov-Gerasimenko
Radio lines: planetary systems
Submillimeter: planetary systems

Access to Document

10.1051/0004-6361/201526094

Cite this

Biver, N., Hofstadter, M., Gulkis, S., Bockelee-Morvan, D., Choukroun, M., Lellouch, E., Schloerb, F. P., Rezac, L., Ip, W. H., Jarchow, C., Hartogh, P., Lee, S., Von Allmen, P., Crovisier, J., Leyrat, C., & Encrenaz, P. (2015). Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta. Astronomy and Astrophysics, 583, Article A3. https://doi.org/10.1051/0004-6361/201526094

@article{fa6584c2264c47a29c33b21471aa9c31,

title = "Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta",

abstract = "The Microwave Instrument on the Rosetta Orbiter (MIRO) has been observing the coma of comet 67P/Churyumov-Gerasimenko almost continuously since June 2014 at wavelengths near 0.53 mm. We present here a map of the water column density in the inner coma (within 3 km from nucleus center) when the comet was at 3.4 AU from the Sun. Based on the analysis of the H162O and H182O (110-101) lines, we find that the column density can vary by two orders of magnitude in this region. The highest column density is observed in a narrow region on the dayside, close to the neck and north pole rotation axis of the nucleus, while the lowest column density is seen against the nightside of the nucleus where outgassing seems to be very low. We estimate that the outgassing pattern can be represented by a Gaussian distribution in a solid angle with FWHM ≈ 80°.",

keywords = "Comets: general, Comets: individual: 67P/Churyumov-Gerasimenko, Radio lines: planetary systems, Submillimeter: planetary systems",

author = "N. Biver and M. Hofstadter and S. Gulkis and D. Bockelee-Morvan and M. Choukroun and E. Lellouch and Schloerb, {F. P.} and L. Rezac and Ip, {W. H.} and C. Jarchow and P. Hartogh and S. Lee and {Von Allmen}, P. and J. Crovisier and C. Leyrat and P. Encrenaz",

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

year = "2015",

month = nov,

day = "1",

doi = "10.1051/0004-6361/201526094",

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

volume = "583",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

}

Biver, N, Hofstadter, M, Gulkis, S, Bockelee-Morvan, D, Choukroun, M, Lellouch, E, Schloerb, FP, Rezac, L, Ip, WH, Jarchow, C, Hartogh, P, Lee, S, Von Allmen, P, Crovisier, J, Leyrat, C & Encrenaz, P 2015, 'Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta', Astronomy and Astrophysics, vol. 583, A3. https://doi.org/10.1051/0004-6361/201526094

TY - JOUR

T1 - Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta

AU - Biver, N.

AU - Hofstadter, M.

AU - Gulkis, S.

AU - Bockelee-Morvan, D.

AU - Choukroun, M.

AU - Lellouch, E.

AU - Schloerb, F. P.

AU - Rezac, L.

AU - Ip, W. H.

AU - Jarchow, C.

AU - Hartogh, P.

AU - Lee, S.

AU - Von Allmen, P.

AU - Crovisier, J.

AU - Leyrat, C.

AU - Encrenaz, P.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The Microwave Instrument on the Rosetta Orbiter (MIRO) has been observing the coma of comet 67P/Churyumov-Gerasimenko almost continuously since June 2014 at wavelengths near 0.53 mm. We present here a map of the water column density in the inner coma (within 3 km from nucleus center) when the comet was at 3.4 AU from the Sun. Based on the analysis of the H162O and H182O (110-101) lines, we find that the column density can vary by two orders of magnitude in this region. The highest column density is observed in a narrow region on the dayside, close to the neck and north pole rotation axis of the nucleus, while the lowest column density is seen against the nightside of the nucleus where outgassing seems to be very low. We estimate that the outgassing pattern can be represented by a Gaussian distribution in a solid angle with FWHM ≈ 80°.

AB - The Microwave Instrument on the Rosetta Orbiter (MIRO) has been observing the coma of comet 67P/Churyumov-Gerasimenko almost continuously since June 2014 at wavelengths near 0.53 mm. We present here a map of the water column density in the inner coma (within 3 km from nucleus center) when the comet was at 3.4 AU from the Sun. Based on the analysis of the H162O and H182O (110-101) lines, we find that the column density can vary by two orders of magnitude in this region. The highest column density is observed in a narrow region on the dayside, close to the neck and north pole rotation axis of the nucleus, while the lowest column density is seen against the nightside of the nucleus where outgassing seems to be very low. We estimate that the outgassing pattern can be represented by a Gaussian distribution in a solid angle with FWHM ≈ 80°.

KW - Comets: general

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

KW - Radio lines: planetary systems

KW - Submillimeter: planetary systems

UR - http://www.scopus.com/inward/record.url?scp=84946552214&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201526094

DO - 10.1051/0004-6361/201526094

M3 - 期刊論文

AN - SCOPUS:84946552214

SN - 0004-6361

VL - 583

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A3

ER -

Distribution of water around the nucleus of comet 67P/Churyumov-Gerasimenko at 3.4 AU from the Sun as seen by the MIRO instrument on Rosetta

Abstract

Keywords

Access to Document

Fingerprint

Cite this