Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer

J. E. Nordholt; D. B. Reisenfeld; R. C. Wiens; S. P. Gary; F. Crary; D. M. Delapp; R. C. Elphic; H. O. Funsten; J. J. Hanley; D. J. Lawrence; D. J. McComas; M. Shappirio; J. T. Steinberg; J. Wang; D. T. Young

doi:10.1029/2002GL016840

Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer

J. E. Nordholt, D. B. Reisenfeld, R. C. Wiens, S. P. Gary, F. Crary, D. M. Delapp, R. C. Elphic, H. O. Funsten, J. J. Hanley, D. J. Lawrence, D. J. McComas, M. Shappirio, J. T. Steinberg, J. Wang, D. T. Young

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

16 Scopus citations

Abstract

We report in situ ion mass spectrometer measurements from the coma of Comet 19P/Borrelly, obtained during the flyby of the Deep Space 1 spacecraft on 22 September 2001. Cometary ions were detected at distances from ∼5.5 × 10⁵ km to 2200 km from the nucleus of the comet. The predominant heavy ions observed during the seven minute interval about closest approach to Borrelly included OH⁺ (at 57% of the total water-group density), H₂O⁺ (at 29%), O⁺ (at 13%), CH₃⁺ (at 5%), and CH₂⁺ (at 4%). Of particular note is the small amount of H₃O⁺ (<9%), as this was the most abundant molecular ion observed at closest approach to Comet Halley. This difference is due to the difference in water production rates between the two comets.

Original language	English (US)
Pages (from-to)	18-1 - 18-4
Journal	Geophysical Research Letters
Volume	30
Issue number	9
DOIs	https://doi.org/10.1029/2002GL016840
State	Published - May 1 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

Access to Document

10.1029/2002GL016840

Cite this

Nordholt, J. E., Reisenfeld, D. B., Wiens, R. C., Gary, S. P., Crary, F., Delapp, D. M., Elphic, R. C., Funsten, H. O., Hanley, J. J., Lawrence, D. J., McComas, D. J., Shappirio, M., Steinberg, J. T., Wang, J., & Young, D. T. (2003). Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer. Geophysical Research Letters, 30(9), 18-1 - 18-4. https://doi.org/10.1029/2002GL016840

@article{e6fabbd05cdf40fe91aafdae880f1a84,

title = "Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer",

abstract = "We report in situ ion mass spectrometer measurements from the coma of Comet 19P/Borrelly, obtained during the flyby of the Deep Space 1 spacecraft on 22 September 2001. Cometary ions were detected at distances from ∼5.5 × 105 km to 2200 km from the nucleus of the comet. The predominant heavy ions observed during the seven minute interval about closest approach to Borrelly included OH+ (at 57% of the total water-group density), H2O+ (at 29%), O+ (at 13%), CH3+ (at 5%), and CH2+ (at 4%). Of particular note is the small amount of H3O+ (<9%), as this was the most abundant molecular ion observed at closest approach to Comet Halley. This difference is due to the difference in water production rates between the two comets.",

author = "Nordholt, {J. E.} and Reisenfeld, {D. B.} and Wiens, {R. C.} and Gary, {S. P.} and F. Crary and Delapp, {D. M.} and Elphic, {R. C.} and Funsten, {H. O.} and Hanley, {J. J.} and Lawrence, {D. J.} and McComas, {D. J.} and M. Shappirio and Steinberg, {J. T.} and J. Wang and Young, {D. T.}",

year = "2003",

month = may,

day = "1",

doi = "10.1029/2002GL016840",

language = "English (US)",

volume = "30",

pages = "18--1 -- 18--4",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley and Sons Inc.",

number = "9",

}

Nordholt, JE, Reisenfeld, DB, Wiens, RC, Gary, SP, Crary, F, Delapp, DM, Elphic, RC, Funsten, HO, Hanley, JJ, Lawrence, DJ, McComas, DJ, Shappirio, M, Steinberg, JT, Wang, J & Young, DT 2003, 'Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer', Geophysical Research Letters, vol. 30, no. 9, pp. 18-1 - 18-4. https://doi.org/10.1029/2002GL016840

TY - JOUR

T1 - Deep Space 1 encounter with Comet 19P/Borrelly

T2 - Ion composition measurements by the PEPE mass spectrometer

AU - Nordholt, J. E.

AU - Reisenfeld, D. B.

AU - Wiens, R. C.

AU - Gary, S. P.

AU - Crary, F.

AU - Delapp, D. M.

AU - Elphic, R. C.

AU - Funsten, H. O.

AU - Hanley, J. J.

AU - Lawrence, D. J.

AU - McComas, D. J.

AU - Shappirio, M.

AU - Steinberg, J. T.

AU - Wang, J.

AU - Young, D. T.

PY - 2003/5/1

Y1 - 2003/5/1

N2 - We report in situ ion mass spectrometer measurements from the coma of Comet 19P/Borrelly, obtained during the flyby of the Deep Space 1 spacecraft on 22 September 2001. Cometary ions were detected at distances from ∼5.5 × 105 km to 2200 km from the nucleus of the comet. The predominant heavy ions observed during the seven minute interval about closest approach to Borrelly included OH+ (at 57% of the total water-group density), H2O+ (at 29%), O+ (at 13%), CH3+ (at 5%), and CH2+ (at 4%). Of particular note is the small amount of H3O+ (<9%), as this was the most abundant molecular ion observed at closest approach to Comet Halley. This difference is due to the difference in water production rates between the two comets.

AB - We report in situ ion mass spectrometer measurements from the coma of Comet 19P/Borrelly, obtained during the flyby of the Deep Space 1 spacecraft on 22 September 2001. Cometary ions were detected at distances from ∼5.5 × 105 km to 2200 km from the nucleus of the comet. The predominant heavy ions observed during the seven minute interval about closest approach to Borrelly included OH+ (at 57% of the total water-group density), H2O+ (at 29%), O+ (at 13%), CH3+ (at 5%), and CH2+ (at 4%). Of particular note is the small amount of H3O+ (<9%), as this was the most abundant molecular ion observed at closest approach to Comet Halley. This difference is due to the difference in water production rates between the two comets.

UR - http://www.scopus.com/inward/record.url?scp=0041738963&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041738963&partnerID=8YFLogxK

U2 - 10.1029/2002GL016840

DO - 10.1029/2002GL016840

M3 - Article

AN - SCOPUS:0041738963

SN - 0094-8276

VL - 30

SP - 18-1 - 18-4

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 9

ER -

Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this