کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1775643 | 1021201 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
C/2002 VQ94 (LINEAR) and 29P/Schwassmann-Wachmann 1 - CO+ and N+2 rich comets
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: C/2002 VQ94 (LINEAR) and 29P/Schwassmann-Wachmann 1 - CO+ and N+2 rich comets C/2002 VQ94 (LINEAR) and 29P/Schwassmann-Wachmann 1 - CO+ and N+2 rich comets](/preview/png/1775643.png)
چکیده انگلیسی
We investigated comets active at large heliocentric distances using observations obtained at the 6-m BTA telescope (SAO RAS, Russia). Long-slit and photometric modes of the focal reducer SCORPIO were used. Two of the comets, 29P/Schwassmann-Wachmann 1 (SW1) and C/2002 VQ94 (LINEAR) were observed to be emission rich. Detection of CO+ and N+2 emissions in the comae of these comets is evidence that they were formed in the outer regions of the Solar System or in a pre-solar interstellar cloud in a low temperature environment with T⩽25 K. The ratio of N+2/CO+ is equal to 0.011 and 0.027 for SW1 and LINEAR, respectively. Comet LINEAR is the most distant object in the Solar System (7.332 AU) for which CO+ and N+2 are measured. The photometric maximum of the isolated CO+ coma in Comet LINEAR is shifted by 1.4 arcsec (7.44Ã103 km) relative to the photometric maximum of the dust coma. This shift deviates from the sunward direction by 63 degrees.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 198, Issue 2, December 2008, Pages 465-471
Journal: Icarus - Volume 198, Issue 2, December 2008, Pages 465-471
نویسندگان
Pavlo P. Korsun, Oleksandra V. Ivanova, Viktor L. Afanasiev,