کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5487087 1523503 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mapping the circumsolar dust ring near the orbit of Venus
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Mapping the circumsolar dust ring near the orbit of Venus
چکیده انگلیسی


- The circumsolar dust ring at the orbit of Venus is studied from STEREO data.
- It has a different orientation to that of the orbital plane of Venus.
- Its azimuthal structure suggests that dust is in a 3:2 orbital resonance.

Synoptic images obtained from the HI-2 instrument on STEREO-A and -B between 2007 and 2014 have been used to further investigate the circumsolar dust ring at the orbit of Venus that was reported by Jones et al. (2013). The analysis is based on high signal-to-noise ratio photometry of the zodiacal light, using data acquired over 10-day intervals, followed by a process of extracting spatial variability on scales up to about 6.5°. The resulting images provide information about the structure of the ring at the location where it is viewed tangentially. We identify 65 usable data sets that comprise about 11% of the available HI-2 data. Analysis of these images show that the orientation of the ring appears to be different to that of the orbit of Venus, with an inclination of 2.1° and longitude of ascending node of 68.5°. We map the variation of ring density parameters in a frame of reference that is co-rotating with Venus and find a pattern suggestive of dust in a 3: 2 orbital resonance. However, the location of the maxima of dust densities is not as expected from theoretical models, and there is some evidence that the dust density distribution in the ring has a pattern speed that differs from the mean motion of Venus.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 288, 15 May 2017, Pages 172-185
نویسندگان
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