Astronomical School’s Report, 2009, Volume 6, Issue 2, Pages 141–150

https://doi.org/10.18372/2411-6602.06.2141
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Physical parameters of gaseous and dust atmospheres of three comets 9P/Tempel 1, 37P/Forbes and C2004 Q1 (Machholz)

Churyumov K.I.1, Afanasiev V.2, Picazzio E.3, Kleshchonok V.V.1, Lukyanyk I.V.1, Ponomarenko V.1, Baransky A.1, Almeida A.3, Costa R.D.D.3, Chubko L.S.4

1Kyiv Shevchenko National University, Ukraine
2Special astrophysical observatory of RAS, Russia
3Department of Astronomy, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of S227,
4National Aviation University, Kyiv, Ukraine

Abstract

One of three explored comets 9P/Tempel 1 was the main target of space mission Deep Impact. We present the results of exploration of spectra of three comets 9P (Tempel 1), C2004 Q1 (Machholz) and 37P/Forbes observed in 2004-2005 at Observatorio do Pico dos Dias (Brazil) and at Mount Pastukhov and Peak Terskol (Russia). The detailed identification of emission lines in spectra of comet 37P/Forbes was made. BVRI photometry comets 9P /Tempel 1) and C2004 Q1 (Machholz) was carried out. Physical parameters of C2, C3 and CN gases in the near nucleus region of the cometary atmospheres of comets 9P (Tempel 1), C2004 Q1 (Machholz) and 37P/Forbes were determined. Presence of cometary luminescence continuum (non-solar origin) in the spectra of three comets are confirmed.

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