Other
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...364..687f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 364, Dec. 1, 1990, p. 687-698.
Other
32
Abundance, Evaporation, Halley'S Comet, Spatial Distribution, Water Vapor, Emission Spectra, Energy Levels, Line Spectra, Outgassing, Spectroscopic Analysis
Scientific paper
Spectroscopic observations of the O I 1D lines for Comet P/Halley are used to derive water-production rates; 43 exposures during the period August 1985 to June 1986 are reduced. The reduction procedure involves sky subtraction, ratios with solar analog comparison stars, subtraction of contaminating NH2 emissions, and absolute flux calibration. The flux collected within the 2.5-arcsec-wide x 151-arcsec-long integration aperture is converted to a total comet O I 6300-A luminosity using a cometary gas outflow model. Water-production rates for 10 preperihelion dates and seven postperihelion dates are derived. An error budget yields an estimated uncertainty of + 30 percent in H2O production rates with a maximum error of + or - 50 percent. For the preperihelion period, a good fit of the water-production rate as a function of heliocentric distance can be obtained as Q(H2O) = 4.36 x 10 to the 29th x r exp -2.54. A postperihelion enhancement by about a factor of 1.8, which appears to dissipate by June 1986, is observed. Several values of enhanced water production agree well with the observed light curve of P/Halley. Comparison of H2O production rates with those deduced by other methods shows quite reasonable agreement.
DiSanti Michael A.
Fink Uwe
No associations
LandOfFree
The production rate and spatial distribution of H2O for Comet P/Halley 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 The production rate and spatial distribution of H2O for Comet P/Halley, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The production rate and spatial distribution of H2O for Comet P/Halley will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1629360