Venus wind map at cloud top level with the MTR/THEMIS visible spectrometer. I. Instrumental performance and first results

P. Gaulme; F. -X Schmider; C. Grec; A. Lopez Ariste; T. Widemann; B. Gelly

doi:10.1016/j.pss.2008.06.014

Venus wind map at cloud top level with the MTR/THEMIS visible spectrometer. I. Instrumental performance and first results

Earth and Planetary Astrophysics 2010-11-12 v1

Authors: P. Gaulme , F. -X Schmider , C. Grec , A. Lopez Ariste , T. Widemann , B. Gelly

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Abstract

Solar light gets scattered at cloud top level in Venus' atmosphere, in the visible range, which corresponds to the altitude of 67 km. We present Doppler velocity measurements performed with the high resolution spectrometer MTR of the Solar telescope THEMIS (Teide Observatory, Canary Island) on the sodium D2 solar line (5890 \AA). Observations lasted only 49 min because of cloudy weather. However, we could assess the instrumental velocity sensitivity, 31 m/s per pixel of 1 arcsec, and give a value of the amplitude of zonal wind at equator at 151 +/- 16 m/s.

Keywords

Venus wind map cloud top level Doppler velocity measurements THEMIS spectrometer zonal wind

Cite

@article{arxiv.1011.2680,
  title  = {Venus wind map at cloud top level with the MTR/THEMIS visible spectrometer. I. Instrumental performance and first results},
  author = {P. Gaulme and F. -X Schmider and C. Grec and A. Lopez Ariste and T. Widemann and B. Gelly},
  journal= {arXiv preprint arXiv:1011.2680},
  year   = {2010}
}

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17 pages, 12 figures

Venus wind map at cloud top level with the MTR/THEMIS visible spectrometer. I. Instrumental performance and first results

Abstract

Keywords

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