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HD 3228


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Ýlgili Makaleler

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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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Baliklar
Sað Açýklýk:00h35m28.63s
Yükselim:+04°17'40.8"
Görünürdeki Parlaklýk:7.64
Uzaklýk:128.205 parsek
özdevim Sað Açýklýk:-2.7
özdevim Yükselim:0.3
B-T magnitude:7.878
V-T magnitude:7.66

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 3228
TYCHO-2 2000TYC 13-974-1
USNO-A2.0USNO-A2 0900-00138640
HIPHIP 2781

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