Volume 459, Number 3, December I 2006
|Page(s)||977 - 980|
|Section||Planets and planetary systems|
|Published online||12 September 2006|
Cometary activity of distant object C/2002 VQ94 (LINEAR)
Main Astronomical Observatory of NAS of Ukraine, Akademika Zabolotnoho 27, 03680 Kyiv, Ukraine e-mail: firstname.lastname@example.org
2 Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz, 369167, Russia e-mail: email@example.com
Accepted: 3 August 2006
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 N and CN. It should be emphasized that, for now, CO+ and tentatively assigned N emissions are detected at a record heliocentric distance.
Key words: line: identification / comets: individual: C/2002 VQ94
© ESO, 2006
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