Spectra of comet C/2002 T7 (LINEAR)-Reference-Cited by-同舟云学术

Spectra of comet C/2002 T7 (LINEAR)

Published:2020 Issue:2 Volume:10 Page:43-47
ISSN:2227-1481
Container-title:Advances in Astronomy and Space Physics
language:
Short-container-title:Adv.Astron.Spa.Physics

Author:

Shubina O. S.¹,Borisov N. V.²,Rosenbush V. K.³,Ivanova O. V.¹

Affiliation:

1. Main Astronomical Observatory of the NAS of Ukraine

2. Special Astrophysical Observatory, Nizhnij Arkhyz, 369167, Russia

3. Astronomical Observatory of Taras Shevchenko National University of Kyiv

Abstract

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

Publisher

Taras Shevchenko National University of Kyiv

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