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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.
| The Effect of Metal Abundance on K-Line Absolute Magnitudes
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1968PASP...80..717Y&db_key=AST
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Datos observacionales y astrométricos
| Constelación: | Boyero |
| Ascensión Recta: | 14h51m34.01s |
| Declinación: | +14°45'51.0" |
| Magnitud Aparente: | 8.101 |
| Movimiento Propio en Ascensión Recta: | 91.7 |
| Movimiento Propio en Declinación: | -104.3 |
| B-T magnitude: | 8.88 |
| V-T magnitude: | 8.166 |
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