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Session 4 - The Sun.
Display session, Monday, June 09
South Main Hall,

[4.04] Airglow Intensities and the Solar Cycle

R. H. Garstang (JILA, Univ. Colo. and NIST)

Some time ago we reported (Bull AAS 27,1213,1995) on an analysis of a series of measurements of night sky brightness published by Walker (1988). Those measures were made at San Benito Mountain in California over a period of about 12 years. We have made minor improvements to our analysis and present our final results. We took each observed brightness measurement, and subtracted from it in turn our estimated contributions of light pollution, zodiacal light and faint star background. Allowances were made for nightly extinction coefficients. The remainder is the contribution of the airglow to the sky brightness. The airglow intensities, which are integrals over the B and V photometric bands, show good correlations with the Ottawa 10.7 cm solar flux intensities. We are performing a similar analysis on night sky brightnesses measured at Kitt Peak by Pilachowski and colleagues (PASP 101,707,1989) to strengthen our deduced correlations.

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