کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1774467 | 1021166 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spatial variations of the sodium/potassium ratio in Mercury's exosphere uncovered by high-resolution spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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![عکس صفحه اول مقاله: Spatial variations of the sodium/potassium ratio in Mercury's exosphere uncovered by high-resolution spectroscopy Spatial variations of the sodium/potassium ratio in Mercury's exosphere uncovered by high-resolution spectroscopy](/preview/png/1774467.png)
چکیده انگلیسی
We measure Na/K ratio between 80 and 400 with values between 60 and 90 when the telescope was pointed towards the subsolar region of Mercury's disk and much larger value when we looked to other part of the exosphere. Moreover, we observed that the Na and K exospheres display very different spatial distributions. Even if these two species are probably ejected with very similar mechanisms from the surface, their differences in mass and sensitivity to solar pressure acceleration imply very different behavior in Mercury's exosphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 207, Issue 1, May 2010, Pages 1-8
Journal: Icarus - Volume 207, Issue 1, May 2010, Pages 1-8
نویسندگان
A. Doressoundiram, F. Leblanc, C. Foellmi, A. Gicquel, G. Cremonese, J.-F. Donati, C. Veillet,