DENSITY AND CHARGE OF PRISTINE FLUFFY PARTICLES FROM COMET 67P/CHURYUMOV-GERASIMENKO

被引：147

作者：

Fulle, M. ^{[1
]}

Della Corte, V. ^{[2
]}

Rotundi, A. ^{[2
,3
]}

Weissman, P. ^{[4
]}

Juhasz, A. ^{[5
]}

Szego, K. ^{[5
]}

Sordini, R. ^{[2
]}

Ferrari, M. ^{[2
,3
]}

Ivanovski, S. ^{[2
]}

Lucarelli, F. ^{[3
]}

Accolla, M. ^{[2
,3
]}

Merouane, S. ^{[6
]}

Zakharov, V. ^{[7
]}

Epifani, E. Mazzotta ^{[8
,9
]}

Lopez-Moreno, J. J. ^{[10
]}

Rodriguez, J. ^{[10
]}

Colangeli, L. ^{[11
]}

Palumbo, P. ^{[2
,3
]}

Gruen, E. ^{[12
]}

Hilchenbach, M.

Bussoletti, E. ^{[3
]}

Esposito, F. ^{[8
]}

Green, S. F. ^{[13
]}

Lamy, P. L. ^{[14
,15
]}

McDonnell, J. A. M. ^{[13
,16
,17
]}

Mennella, V.

Molina, A. ^{[18
]}

Morales, R. ^{[10
]}

Moreno, F. ^{[10
]}

Ortiz, J. L. ^{[10
]}

Palomba, E.

Rodrigo, R. ^{[19
,20
]}

Zarnecki, J. C. ^{[20
]}

Cosi, M. ^{[21
]}

Giovane, F. ^{[22
]}

Gustafson, B. ^{[23
]}

Herranz, M. L. ^{[10
]}

Jeronimo, J. M. ^{[10
]}

Leese, M. R.

Lopez-Jimenez, A. C. ^{[10
]}

Altobelli, N. ^{[24
]}

机构：

[1] INAF, Osservatorio Astron, I-34143 Trieste, Italy

[2] INAF, Ist Astrofis & Planetol Spaziali, I-0133 Rome, Italy

[3] Univ Napoli Parthenope, CDN IC4, Dip Sci & Tecnol, I-80143 Naples, Italy

[4] CALTECH, Jet Prop Lab, Planetary Sci Sect, Pasadena, CA 91109 USA

[5] Wigner Res Ctr Phys, Budapest, Hungary

[6] Max Planck Inst Stromungsforsch, D-37077 Gottingen, Germany

[7] Univ Paris Diderot, Univ Paris 06, CNRS, LESIA,Obs Paris, F-92195 Meudon, France

[8] INAF, Osservatorio Astron Capodimonte, I-80133 Naples, Italy

[9] INAF, Osservatorio Astron Roma, Rome, Italy

[10] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain

[11] ESA, Estec, NL-2201 AZ Noordwijk, Netherlands

[12] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

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

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

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

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

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

[18] Univ Granada, Fac Ciencias, Dept Fs Aplicada, E-18071 Granada, Spain

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

[20] Int Space Sci Inst, CH-3012 Bern, Switzerland

[21] Selex ES, I-50013 Florence, Italy

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

[23] Univ Florida, Gainesville, FL 32611 USA

[24] ESA, ESAC, E-28692 Madrid, Spain

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2015年 / 802卷 / 01期

关键词：

comets: general; comets: individual (67P/Churyumov-Gerasimenko); space vehicles: instruments; SECONDARY-ELECTRON YIELD; ROSETTA MISSION; DUST; SURFACE;

D O I：

10.1088/2041-8205/802/1/L12

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Grain Impact Analyzer and Dust Accumulator (GIADA) instrument on board ESA's Rosetta mission is constraining the origin of the dust particles detected within the coma of comet 67 P/Churyumov-Gerasimenko (67P). The collected particles belong to two families: (i) compact particles (ranging in size from 0.03 to 1mm), witnessing the presence of materials that underwent processing within the solar nebula and (ii) fluffy aggregates (ranging in size from 0.2 to 2.5 mm) of sub-micron grains that may be a record of a primitive component, probably linked to interstellar dust. The dynamics of the fluffy aggregates constrain their equivalent bulk density to < 1 kg m(-3). These aggregates are charged, fragmented, and decelerated by the spacecraft negative potential and enter GIADA in showers of fragments at speeds < 1m s(-1). The density of such optically thick aggregates is consistent with the low bulk density of the nucleus. The mass contribution of the fluffy aggregates to the refractory component of the nucleus is negligible and their coma brightness contribution is less than 15%.

引用

页数：5

共 25 条

[1]

Auer S, 2007, ESA SPEC PUBL, V643, P177

[2] Secondary Electron Emission on Space Materials: Evaluation of the Total Secondary Electron Yield From Surface Potential Measurements [J].

Balcon, N. ;

Payan, D. ;

Belhaj, M. ;

Tondu, T. ;

Inguimbert, V. .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2012, 40 (02) :282-290

[3] Comet 81P/Wild 2 under a microscope [J].

Brownlee, Don ;

Tsou, Peter ;

Aleon, Jerome ;

Alexander, Conel M. O'D. ;

Araki, Tohru ;

Bajt, Sasa ;

Baratta, Giuseppe A. ;

Bastien, Ron ;

Bland, Phil ;

Bleuet, Pierre ;

Borg, Janet ;

Bradley, John P. ;

Brearley, Adrian ;

Brenker, F. ;

Brennan, Sean ;

Bridges, John C. ;

Browning, Nigel D. ;

Brucato, John R. ;

Bullock, E. ;

Burchell, Mark J. ;

Busemann, Henner ;

Butterworth, Anna ;

Chaussidon, Marc ;

Cheuvront, Allan ;

Chi, Miaofang ;

Cintala, Mark J. ;

Clark, B. C. ;

Clemett, Simon J. ;

Cody, George ;

Colangeli, Luigi ;

Cooper, George ;

Cordier, Patrick ;

Daghlian, C. ;

Dai, Zurong ;

D'Hendecourt, Louis ;

Djouadi, Zahia ;

Dominguez, Gerardo ;

Duxbury, Tom ;

Dworkin, Jason P. ;

Ebel, Denton S. ;

Economou, Thanasis E. ;

Fakra, Sirine ;

Fairey, Sam A. J. ;

Fallon, Stewart ;

Ferrini, Gianluca ;

Ferroir, T. ;

Fleckenstein, Holger ;

Floss, Christine ;

Flynn, George ;

Franchi, Ian A. .

SCIENCE, 2006, 314 (5806) :1711-1716

[4] The organic-rich surface of comet 67P/Churyumov-Gerasimenko as seen by VIRTIS/Rosetta [J].

Capaccioni, F. ;

Coradini, A. ;

Filacchione, G. ;

Erard, S. ;

Arnold, G. ;

Drossart, P. ;

De Sanctis, M. C. ;

Bockelee-Morvan, D. ;

Capria, M. T. ;

Tosi, F. ;

Leyrat, C. ;

Schmitt, B. ;

Quirico, E. ;

Cerroni, P. ;

Mennella, V. ;

Raponi, A. ;

Ciarniello, M. ;

McCord, T. ;

Moroz, L. ;

Palomba, E. ;

Ammannito, E. ;

Barucci, M. A. ;

Bellucci, G. ;

Benkhoff, J. ;

Bibring, J. P. ;

Blanco, A. ;

Blecka, M. ;

Carlson, R. ;

Carsenty, U. ;

Colangeli, L. ;

Combes, M. ;

Combi, M. ;

Crovisier, J. ;

Encrenaz, T. ;

Federico, C. ;

Fink, U. ;

Fonti, S. ;

Ip, W. H. ;

Irwin, P. ;

Jaumann, R. ;

Kuehrt, E. ;

Langevin, Y. ;

Magni, G. ;

Mottola, S. ;

Orofino, V. ;

Palumbo, P. ;

Piccioni, G. ;

Schade, U. ;

Taylor, F. ;

Tiphene, D. .

SCIENCE, 2015, 347 (6220)

[5] Grain impact analyser and dust accumulator (Giada) experiment for the Rosetta mission: Design, performances and first results [J].

Colangeli, L. ;

Lopez-Moreno, J. J. ;

Palumbo, P. ;

Rodriguez, J. ;

Cosi, M. ;

Della Corte, V. ;

Esposito, F. ;

Fulle, M. ;

Herranz, M. ;

Jeronimo, J. M. ;

Lopez-Jimenez, A. ;

Fpifani, E. Mazzotta ;

Morales, R. ;

Moreno, F. ;

Palomba, E. ;

Rotundi, A. .

SPACE SCIENCE REVIEWS, 2007, 128 (1-4) :803-821

[6] GIADA: ITS STATUS AFTER THE ROSETTA CRUISE PHASE AND ON-GROUND ACTIVITY IN SUPPORT OF THE ENCOUNTER WITH COMET 67P /CHURYUMOV-GERASIMENKO [J].

Della Corte, V. ;

Rotundi, A. ;

Accolla, M. ;

Sordini, R. ;

Palumbo, P. ;

Colangeli, L. ;

Lopez-Moreno, J. J. ;

Rodriguez, J. ;

Rietmeijer, F. J. M. ;

Ferrari, M. ;

Lucarelli, F. ;

Mazzotta Epifani, E. ;

Ivanovski, S. ;

Aronica, A. ;

Cosi, M. ;

Bussoletti, E. ;

Crifo, J. F. ;

Esposito, F. ;

Fulle, M. ;

Green, S. F. ;

Gruen, E. ;

Herranz, M. L. ;

Jeronimo, J. M. ;

Lamy, P. ;

Lopez Jimenez, A. ;

McDonnell, J. A. M. ;

Mennella, V. ;

Molina, A. ;

Morales, R. ;

Moreno, F. ;

Palomba, E. ;

Perrin, J. M. ;

Rodrigo, R. ;

Weissman, P. ;

Zakharov, V. ;

Zarnecki, J. C. .

JOURNAL OF ASTRONOMICAL INSTRUMENTATION, 2014, 3 (01)

[7] Organic grain coatings in primitive interplanetary dust particles: Implications for grain sticking in the Solar Nebula [J].

Flynn, George J. ;

Wirick, Sue ;

Keller, Lindsay P. .

EARTH PLANETS AND SPACE, 2013, 65 (10) :1159-1166

[8] Comet 67P/Churyumov-Gerasimenko: the GIADA dust environment model of the Rosetta mission target [J].

Fulle, M. ;

Colangeli, L. ;

Agarwal, J. ;

Aronica, A. ;

Della Corte, V. ;

Esposito, F. ;

Gruen, E. ;

Ishiguro, M. ;

Ligustri, R. ;

Lopez Moreno, J. J. ;

Epifani, E. Mazzotta ;

Milani, G. ;

Moreno, F. ;

Palumbo, P. ;

Rodriguez Gomez, J. ;

Rotundi, A. .

ASTRONOMY & ASTROPHYSICS, 2010, 522

[9] The dust mass distribution of comet 81P/Wild 2 [J].

Green, SF ;

McDonnell, JAM ;

McBride, N ;

Colwell, MTSH ;

Tuzzolino, AJ ;

Economou, TE ;

Tsou, P ;

Clark, BC ;

Brownlee, DE .

JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 2004, 109 (E12) :1-13

[10]

Guettler C., 2009, APJ, V701, P130

← 1 2 3 →