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CA II H and K measurements made at Mount Wilson Observatory, 1966-1983
Summaries are presented of the photoelectric measurements of stellar CaII H and K line intensity made at Mount Wilson Observatory during theyears 1966-1983. These results are derived from 65,263 individualobservations of 1296 stars. For each star, for each observing season,the maximum, minimum, mean, and variation of the instrumental H and Kindex 'S' are given, as well as a measurement of the accuracy ofobservation. A total of 3110 seasonal summaries are reported. Factorswhich affect the ability to detect stellar activity variations andaccurately measure their amplitudes, such as the accuracy of the H and Kmeasurements and scattered light contamination, are discussed. Relationsare given which facilitate intercomparison of 'S' values with residualintensities derived from ordinary spectrophotometry, and for convertingmeasurements to absolute fluxes.
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Группы:
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Наблюдательные данные и астрометрия
| Созвездие: | Рыбы |
| Прямое восхождение: | 00h35m28.63s |
| Склонение: | +04°17'40.8" |
| Видимая звёздная величина: | 7.64 |
| Расстояние: | 128.205 парсек |
| Собственное движение RA: | -2.7 |
| Собственное движение Dec: | 0.3 |
| B-T magnitude: | 7.878 |
| V-T magnitude: | 7.66 |
Каталоги и обозначения:
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INHABITED SKY
