67P/C-G inner coma dust properties from 2.2 au inbound to 2.0 au outbound to the Sun

被引：46

作者：

Della Corte, V. ^{[1
]}

Rotundi, A. ^{[1
,2
]}

Fulle, M. ^{[3
]}

Ivanovski, S. ^{[1
]}

Green, S. F. ^{[4
]}

Rietmeijer, F. J. M. ^{[5
]}

Colangeli, L. ^{[6
]}

Palumbo, P. ^{[1
,2
]}

Sordini, R. ^{[1
,2
]}

Ferrari, M. ^{[1
]}

Accolla, M. ^{[7
]}

Zakharov, V. ^{[8
]}

Epifani, E. Mazzotta ^{[9
]}

Weissman, P. ^{[10
]}

Gruen, E. ^{[11
]}

Lopez-Moreno, J. J. ^{[12
]}

Rodriguez, J. ^{[12
]}

Bussoletti, E. ^{[2
]}

Crifo, J. F. ^{[13
]}

Esposito, F. ^{[14
]}

Lamy, P. L. ^{[15
,16
]}

McDonnell, J. A. M. ^{[4
,17
,18
]}

Mennella, V. ^{[14
]}

Molina, A. ^{[19
]}

Morales, R. ^{[12
]}

Moreno, F. ^{[12
]}

Palomba, E. ^{[1
]}

Perrin, J. M. ^{[15
,16
,20
]}

Rodrigo, R. ^{[21
,22
]}

Zarnecki, J. C. ^{[22
]}

Cosi, M. ^{[23
]}

Giovane, F. ^{[24
]}

Gustafson, B. ^{[25
]}

Ortiz, J. L. ^{[12
]}

Jeronimo, J. M. ^{[12
]}

Leese, M. R. ^{[4
]}

Herranz, M. ^{[12
]}

Liuzzi, V. ^{[2
]}

Lopez-Jimenez, A. C. ^{[12
]}

机构：

[1] Inst Astrofis & Planetol Spaziali, INAF, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Univ Napoli Parthenope, Dipartimento Sci & Tecnol, Ctr Direz Napoli Isola C4, I-80143 Naples, Italy

[3] Osserv Astron Trieste, INAF, Via Tiepolo 11, I-34143 Trieste, Italy

[4] Open Univ, Sch Phys Sci, Planetary & Space Sci, Milton Keynes MK7 6AA, Bucks, England

[5] Univ New Mexico, Dept Earth & Planetary Sci, MSC 03 2040, Albuquerque, NM 87131 USA

[6] European Space Res & Technol Ctr ESTEC, ESA, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

[7] INAF, Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy

[8] Univ Paris Diderot, Univ Paris 06, CNRS, LESIA,Obs Paris, 5 Pl J Janssen, F-92195 Meudon, France

[9] Osserv Astron Roma, INAF, Via Frascati 33, Rome, Italy

[10] Planetary Sci Inst, 1700 E Ft Lowell, Tucson, AZ 85719 USA

[11] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[12] CSIC, Consejo Super Invest Cient, Inst Astrofis Andalucia, POB 3008, E-18080 Granada, Spain

[13] Univ Versailles St Quentin En Yvelines, Inst Pierre Simon Laplace, CNRS, Lab Atmospheres,Milieux,Observat Spatiales, 11 Blvd Alembert, F-78280 Guyancourt, France

[14] Osserv Astron Capodimonte, INAF, Salita Moiariello 16, I-80133 Naples, Italy

[15] CNRS, UMR 7326, Lab Astrophys Marseilles, F-13388 Marseilles 13, France

[16] Aix Marseille Univ, F-13388 Marseilles 13, France

[17] Univ Kent, Canterbury CT2 7NZ, Kent, England

[18] UnispaceKent, Canterbury CT2 8EF, Kent, England

[19] Univ Granada, Fac Ciencias, Dept Fis Aplicada, Avda Severo Ochoa S-N, E-18071 Granada, Spain

[20] AMU, CNRS, Observ Haute Provence OSU Pytheas UMS 2244, F-04870 St Michel Lobservatoire, France

[21] CSIC, INTA, Ctr Astrobiol, E-28691 Madrid, Spain

[22] Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland

[23] Leonardo, Via Einstein 35, I-50013 Florence, Italy

[24] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[25] Univ Florida, Gainesville, FL 32611 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 462卷

关键词：

instrumentation: detectors; methods: data analysis; comets: general; comets: individual: 67P/Churyumov-Gerasimenko; ONBOARD ROSETTA; 67P/CHURYUMOV-GERASIMENKO; GIADA; NUCLEUS; VIRTIS; OSIRIS; JETS;

D O I：

10.1093/mnras/stw2529

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

GIADA (Grain Impact Analyzer and Dust Accumulator) on-board the Rosetta space probe is designed to measure the momentum, mass and speed of individual dust particles escaping the nucleus of comet 67P/Churyumov-Gerasimenko (hereafter 67P). From 2014 August to 2016 June, Rosetta escorted comet 67P during its journey around the Sun. Here, we focus on GIADA data taken between 2015 January and 2016 February which included 67P's perihelion passage. To better understand cometary activity and more specifically the presence of dust structures in cometary comae, we mapped the spatial distribution of dust density in 67P's coma. In this manner, we could track the evolution of high-density regions of coma dust and their connections with nucleus illumination conditions, namely tracking 67P's seasons. We also studied the link between dust particle speeds and their masses with respect to heliocentric distance, i.e. the level of cometary activity. This allowed us to derive a global and a local correlation of the dust particles' speed distribution with respect to the H2O production rate.

引用

页码：S210 / S219

页数：10

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