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HD 21062


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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UvbyHbeta_ photometry of main sequence A type stars.
We present Stroemgren uvby and Hbeta_ photometry for a set of575 northern main sequence A type stars, most of them belonging to theHipparcos Input Catalogue, with V from 5mag to 10mag and with knownradial velocities. These observations enlarge the catalogue we began tocompile some years ago to more than 1500 stars. Our catalogue includeskinematic and astrophysical data for each star. Our future goal is toperform an accurate analysis of the kinematical behaviour of these starsin the solar neighbourhood.

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.

X-ray emission from UX ARIETIS - RS Canum Venaticorum systems as a class of coronal X-ray sources
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Spectrophotometry of RS Canum Venaticorum, AR Lacertae, and UX ARIETIS
The wavelength dependences of the ultraviolet excesses of the RSCVn-type stars RS CVn, AR Lac, and UX Ari have been measuredspectrophotometrically with a wavelength resolution of 60 A. A number ofmechanisms are examined to account for the excess light from thesesystems, and it is concluded that free-free emission from hotcircumstellar gas provides the most satisfactory explanation.

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观测天体数据

星座:白羊座
右阿森松:03h24m48.98s
赤纬:+28°39'09.2"
视星:7.125
距离:104.167 天文距离
右阿森松适当运动:28.3
赤纬适当运动:-57.8
B-T magnitude:7.288
V-T magnitude:7.139

目录:
适当名称   (Edit)
HD 1989HD 21062
TYCHO-2 2000TYC 1809-78-1
USNO-A2.0USNO-A2 1125-01107250
HIPHIP 15902

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