Publication Abstracts

Matsushima et al. 1966

Matsushima, S., J.R. Zink, and J.E. Hansen, 1966: Atmospheric extinction by dust particles as determined from three-color photometry of the lunar eclipse of 19 December 1964. Astron. J., 71, 103-110, doi:10.1086/109863.

Three-color photometric observations of the eclipsed moon were carried out with a 12-in. reflector during the total eclipse on 19 December 1964, with the purpose of obtaining data for determining the dust content in the earth's atmosphere. In order to make possible a direct comparison with similar data obtained with the same equipment during the previous eclipse (30 December 1963), the photoelectric measurements were centered principally on the Mare Crisium region, except for a part of the observations which were made near Mare Frigoris. The maximum decreases in brightness at midtotality, which amounted to 12.6, 13.8, and 15.9 mag. in V, B, and U colors, respectively, were much less than those obtained at the previous eclipse but were still considerably larger than those of a normal eclipse. As opposed to the December 1963 eclipse in which no reddening effect was observed, the maximum increases of the B-V and U-B color indices were found to be 1.1 and 2.2 mag., respectively.

Theoretical calculations of the intensity distribution in the umbral region are made for various models of the earth's atmosphere with different contents of dust and water particles. Comparisons with the observations indicate that the amount of dust and water particles at the time of the eclipse was such that it produced an additional extinction of 0.04 mag. per air mass. The corresponding value determined for the December 1963 eclipse was about 0.14 mag. per air mass.

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BibTeX Citation

@article{ma02600e,
  author={Matsushima, S. and Zink, J. R. and Hansen, J. E.},
  title={Atmospheric extinction by dust particles as determined from three-color photometry of the lunar eclipse of 19 December 1964},
  year={1966},
  journal={Astron. J.},
  volume={71},
  pages={103--110},
  doi={10.1086/109863},
}

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RIS Citation

TY  - JOUR
ID  - ma02600e
AU  - Matsushima, S.
AU  - Zink, J. R.
AU  - Hansen, J. E.
PY  - 1966
TI  - Atmospheric extinction by dust particles as determined from three-color photometry of the lunar eclipse of 19 December 1964
JA  - Astron. J.
VL  - 71
SP  - 103
EP  - 110
DO  - 10.1086/109863
ER  -

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