کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8142801 | 1523919 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photometric and spectroscopic analysis of Comet 29P/Schwassmann-Wachmann 1 activity
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
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چکیده انگلیسی
We carried out photometric and spectroscopic observations of comet 29P/Schwassmann-Wachmann 1 at the 6-m BTA telescope (SAO RAS, Russia) and the 1.6-m telescope of the National Laboratory for Astrophysics (LNA, Brazil) on February 20, 2012, and on May 31, 2011, respectively. The spectra revealed the presence of CO+ and N2+ emissions in the cometary coma at a distance of 5.25 AU from the Sun. The ratio [N2+]/[CO+] within the projected slit is 0.013. The images obtained through BVR filters showed a bright, dust coma, indicating a high level of activity. We estimated a colour index and a colour excess for the comet. The parameter AfÏ, which is used as an indicator of a cometary activity, was measured to be 2584±50 cm in the reference optical aperture of Ï=104 km. The dust production constituted 33 kg/s and 9.3·103 kg/s, it was obtained using different methods. We also investigated the morphology of the comet using image enhancement techniques and found two jets in the coma.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 121, February 2016, Pages 10-17
Journal: Planetary and Space Science - Volume 121, February 2016, Pages 10-17
نویسندگان
Oleksandra V. Ivanova, Igor V. Luk׳yanyk, Nikolay N. Kiselev, Viktor L. Afanasiev, Enos Picazzio, Oscar Cavichia, Amaury A. de Almeida, Sergei M. Andrievsky,