Narrowband photometric results for comet 46P/Wirtanen

Details Narrowband photometric results for comet 46P/Wirtanen Narrowband photometric results for comet 46P/Wirtanen

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...335l..50f&link_type=abstract

Astronomy and Astrophysics, v.335, p.L50-L55 (1998)

Astronomy and Astrophysics

Astrophysics

15

Comets: General, Comets: Individual: 46P/Wirtanen, Techniques: Photometric

Scientific paper

Narrowband filter photometry was performed on the Rosetta spacecraft target, comet 46P/Wirtanen, at Lowell Observatory in 1991 and 1997. Production rates were determined for OH, NH, CN, C_3, and C_2, along with a measure of the dust production, A(theta )frho . Relative abundances were computed, and a comparison to other comets indicates that this comet has a ``typical'' composition and a very low dust-to-gas ratio. The peak value of A(theta )frho was 138 cm, while the OH production rates, used in conjunction with a standard water production model, yield a peak water production of ~ 1.0x10(28) mol s(-1) at perihelion and suggest a minimum active surface area of ~ 1.8 km(2) . Finally, a comparison to comet Halley puts Wirtanen into context with previous in situ comet measurements.

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