Dust production and coma morphology of 67P/Churyumov-Gerasimenko during the 2002/2003 apparition. II. A comparative study of dust production in 46P/Wirtanen and 67P/Churyumov-Gerasimenko during their 2002/2003 apparition

Bibcode
2004A&A...420..389K
DOI
10.1051/0004-6361:20035877
Kidger, M. R.
Bibliographical reference

Astronomy and Astrophysics, v.420, p.389-395 (2004)

Advertised on:
6
2004
Journal
Astronomy and Astrophysics
Number of authors
1
IAC number of authors
1
Citations
18
Refereed citations
18
Description
A comparison is made of the light curves and and dust production of the initial target for the ROSETTA mission, 46P/Wirtanen and the new target 67P/Churyumov-Gerasimenko during their recent 2002/2003 apparition. The study is based on amateur CCD monitoring using a standardised method to produce consistent photometry in Johnson-Kron-Cousins system. Although the dust production of the two comets is similar at perihelion (Af ho ≈200-cm), dust production in 46P/Wirtanen peaked before perihelion, while in 67P/Churyumov-Gerasimenko it peaks after perihelion. Dust activity shows the same post-perihelion dependence with heliocentric distance in both comets. Overall 67P/Churyumov-Gerasimenko has a dust production rate an order of magnitude greater at the same heliocentric distance post-perihelion as 46P/Wirtanen, but 46P/Wirtanen has greater maximum dust production immediately prior to perihelion.
Type
Refereed
Comets
Techniques
Instrumentation

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