On changes in the spectra of Comet C/1999 S4 (LINEAR) on July 22−28, 2002
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
On changes in the spectra of Comet C/1999 S4 (LINEAR) on July 22−28, 2002
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| Creator |
Chubko, L.S.
Churyumov, K.I. Lukyanyk, I.V. Kleshchonok, V.V. |
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| Subject |
MS5: Dynamics and Physics of Solar System Bodies
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| Description |
Some spectra of Comet C/1999 S4 (LINEAR) are obtained with the UAGS spectrograph (long slit and CCD) installed on the 1-m Zeiss reflector of the SAO RAS (the Northern Caucasus, Nizhny Arkhyz) on July 23/24, 26/27, and 27/28, 2000. Sophisticated identification of emission lines in the spectra of Comet C/1999 S4 (LINEAR) is made. Emission lines of the molecules C₂, C₃, CN, NH, CH, NH₂, CO⁺, H₂O⁺, and others were identified in the spectra of Comet C/1999 S4 (LINEAR) derived on July 22/23, 2000 before splitting the cometary nucleus. Analysis of the CCD spectra obtained on July 27/28, 2000 reveals very weak emission lines superposed on the solar reflection spectrum, unlike the case of spectra obtained with the same instrument on July 22/23. From analysis of the surface brightness profile of C₂ along the slit, the velocity of expansion of two secondary fragments (V = 10 km/hr) and energy of fragment expansion (E = 8.7 · 10¹⁵ erg) are estimated. The luminescence cometary continuum is detected by a level of 26% at 5000 Å in the spectra of the comet. Possible mechanisms of nucleus splitting are discussed.
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| Date |
2015-04-03T20:00:34Z
2015-04-03T20:00:34Z 2005 |
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| Type |
Article
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| Identifier |
On changes in the spectra of Comet C/1999 S4 (LINEAR) on July 22−28, 2002 / L.S. Chubko, K.I. Churyumov, I.V. Lukyanyk, V.V. Kleshchonok // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 504-508. — Бібліогр.: 8 назв. — англ.
0233-7665 http://dspace.nbuv.gov.ua/handle/123456789/79710 |
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| Language |
en
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| Relation |
Кинематика и физика небесных тел
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| Publisher |
Головна астрономічна обсерваторія НАН України
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