| タイトル | Ca II H and K measurements made at Mount Wilson Observatory, 1966-1983 |
| 著者（英） | Preston, George W.; Frazer, James; Duncan, Douglas K.; Vaughan, Arthur H.; Wilson, Olin C. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|Carnegie Institution of Washington |
| 発行日 | 1991-05-01 |
| 言語 | eng |
| 内容記述 | Summaries are presented of the photoelectric measurements of stellar Ca II H and K line intensity made at Mount Wilson Observatory during the years 1966-1983. These results are derived from 65,263 individual observations of 1296 stars. For each star, for each observing season, the maximum, minimum, mean, and variation of the instrumental H and K index 'S' are given, as well as a measurement of the accuracy of observation. A total of 3110 seasonal summaries are reported. Factors which affect the ability to detect stellar activity variations and accurately measure their amplitudes, such as the accuracy of the H and K measurements and scattered light contamination, are discussed. Relations are given which facilitate intercomparison of 'S' values with residual intensities derived from ordinary spectrophotometry, and for converting measurements to absolute fluxes. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 91A34450 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/348669 |
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