P/Halley: Spatial distribution and scale lengths for C2, CN, NH2, and H2O

Details P/Halley: Spatial distribution and scale lengths for C2, CN, NH2, and H2O P/Halley: Spatial distribution and scale lengths for C2, CN, NH2, and H2O

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..187f&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 187-189 (SEE N93-19113 06-90)

Astronomy and Astrophysics

Astronomy

Absorption Spectroscopy, Amino Radical, Cyanogen, Halley'S Comet, Spatial Distribution, Water Vapor, Astronomical Spectroscopy, Continuums, Slits, Stellar Spectra

Scientific paper

From P/Halley, long slit spectroscopic exposures on 12 dates, extending from Oct. 1985 to May 1986, spatial profiles were obtained for emissions by C2, CN, NH2, and OI (1D). Examples of our derived spatial profiles are given. The qualitative trend of the scale lengths for the different species is nicely exemplified in this example. C2 has the longest parent scale length followed by CN and NH2. OI which tracks the parent H2O distribution is quite narrow but slightly wider than the continuum profile which has a center essentially indistinguishable from the stellar seeing disk. Comparison of C2 and CN also shows that C2 is falling off faster in the wings so that the daughter scale length of CN must be larger than that of C2.

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