Peculiarities of spectra of comet C/2002 T7 (LINEAR) in January 2004

Chubko, L. S.; Чурюмов, К. И.; Lukyanyk, I. V.; Kleschonok, V. V.; Berezhnoy, A. A.; Chavushyan, V.; Sandoval, L.; Palma, A.

doi:10.18372/2411-6602.05.1104

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2020

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“…Since it was quite bright for such a long time, numerous spectra of the comet were obtained in the range from ultraviolet (UV) through the visible and infrared (IR) domains and up to the radio range. The spectral observations of C/2002 T7 in the visible range were carried out by several scientific groups [6,20,24]. The authors reported the presence of emission species in spectra of the cometary coma.…”

Section: Introductionmentioning

confidence: 99%

Spectra of comet C/2002 T7 (LINEAR)

Shubina

Borisov

Rosenbush

et al. 2020

Adv.Astron.Spa.Physics

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We present the results of spectral observations of comet C/2002 T7 (LINEAR) carried out at the 1-m Zeiss-1000 telescope of the Special Astrophysical Observatory (Russia). The spectra were obtained within the 3500-7500 Å wavelength range on November 13, 14, and 21, 2003, before the perihelion passage, when heliocentric and geocentric distances of the comet were about 2.7 AU and 1.8 AU, respectively. Spectra do not show any emission features from the strongest cometary emissions of the CN, C2, and C3 molecules. The normalised spectral gradient of reflectivity is 2.8% per 1000 Å and 5.4% per 1000 Å for November 14 and 21, respectively. The Afρ parameter, which characterises the dust production rate in the comet, is on average about 800 cm. Comet C/2002 T7 (LINEAR) can be classified as belonging to the group of dusty comets

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Section: Introductionmentioning

confidence: 99%