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HD 27384


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UBV polarimetry of 361 A- and F-type stars in selected areas
We present simultaneous UBV linear polarization measurements for 361 A-and F-type stars with accurate colour excess and distance determination.These stars are distributed in 35 Kapteyn's Selected Areas, covering thethird and fourth quadrants of the galactic plane (|b| <= 30degr ).The obtained polarization and the known colour excess are compared. Ananalysis of the polarization distribution as a function of the stellardistance is also performed. Based on observations collected at theEuropean Southern Observatory (ESO), La Silla, Chile.

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.

Photoelectric UVBY and H BET photometry of 750 A and F stars in 63 selected areas with |b|<30
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977A&AS...30..297K&db_key=AST

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Наблюдательные данные и астрометрия

Созвездие:Телец
Прямое восхождение:04h19m55.94s
Склонение:+14°52'26.8"
Видимая звёздная величина:9.2
Собственное движение RA:-7
Собственное движение Dec:-69.7
B-T magnitude:9.896
V-T magnitude:9.258

Каталоги и обозначения:
Собственные имена   (Edit)
HD 1989HD 27384
TYCHO-2 2000TYC 679-512-1
USNO-A2.0USNO-A2 0975-00962083

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