Water vapor and hydroxyl distributions in the inner coma of comet P/Halley measured by the Vega 2 three-channel spectrometer TKS

Details Water vapor and hydroxyl distributions in the inner coma of comet P/Halley measured by the Vega 2 three-channel spectrometer TKS Water vapor and hydroxyl distributions in the inner coma of comet P/Halley measured by the Vega 2 three-channel spectrometer TKS

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...203..175k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 203, no. 1, Sept. 1988, p. 175-182.

Astronomy and Astrophysics

Astrophysics

14

Comet Heads, Halley'S Comet, Hydroxyl Radicals, Vega Project, Water Vapor, Comet Nuclei, Lyman Alpha Radiation, Satellite-Borne Instruments, Signal To Noise Ratios

Scientific paper

The results of modeling the TKS Vega measurements of the H2O 1.38 micron band and the OH 309 nm band of Comet Halley on March 9, 1986 are reported. Water vapor was ejected from the comet in a cone of 50 + or - 10 deg in the sunward direction with a total production rate of 1.6 + or - 0.2 x 10 to the 30th/s and a mean temperature of 50 + or - 25 K. This ejection geometry was observed up to 2000 km. About a quarter of the total water vapor is formed by water dimer, assuming a thermochemical equilibrium at 250 K. The measured Haser lifetimes of OH and its parent, 10 to the 5th s and 6 x 10 to the 4th s at 0.834 AU, respectively, results in real lifetimes of 1.2 x 10 to the 5th and 0.9 x 10 to the 5th at 1 AU. The water vapor cross section of Lyman-alpha equals 8 x 120 to the -18th sq cm at 50 K.

Affiliated with

Also associated with

No associations

Rating

Water vapor and hydroxyl distributions in the inner coma of comet P/Halley measured by the Vega 2 three-channel spectrometer TKS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Water vapor and hydroxyl distributions in the inner coma of comet P/Halley measured by the Vega 2 three-channel spectrometer TKS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water vapor and hydroxyl distributions in the inner coma of comet P/Halley measured by the Vega 2 three-channel spectrometer TKS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-908295