Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...459..977k&link_type=abstract
Astronomy and Astrophysics, Volume 459, Issue 3, December I 2006, pp.977-980
Astronomy and Astrophysics
Astrophysics
6
Line: Identification, Comets: Individual: C/2002 Vq94
Scientific paper
Aims.We have started a program of spectroscopic and photometric investigations of distant active comets in the optical domain. The comets with a significant level of activity-in particular, extended tails-are the objects of our observations. Methods: .The observations were made at the 6-m telescope BTA (SAO RAS, Russia), with the focal reducer SCORPIO attached to the prime focus of the telescope. Long-slit and photometry modes were turned to perform our first observations. The spectral resolution in the spectroscopy mode was 10 Å. Results: .The result of the spectrum analysis of comet C/2002 VQ94 (LINEAR) is of particular interest. The comet observed at the heliocentric distance of 6.8 AU clearly shows a rich molecular spectrum. We identified 14 vibrational bands of CO+ (Comet Tail system), emissions of C3, and some tentatively assigned to N2+ and CN. It should be emphasized that, for now, CO+ and tentatively assigned N2+ emissions are detected at a record heliocentric distance.
Afanasiev Victor L.
Ivanova Oleksandra V.
Korsun Pavlo P.
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