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HD 38336


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Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
Radial velocities have been determined for a sample of 2930 B2-F5 stars,95% observed by the Hipparcos satellite in the north hemisphere and 80%without reliable radial velocity up to now. Observations were obtainedat the Observatoire de Haute Provence with a dispersion of 80Ä,mm(-1) with the aim of studying stellar and galactic dynamics.Radial velocities have been measured by correlation with templates ofthe same spectral class. The mean obtained precision is 3.0 km s(-1)with three observations. A new MK spectral classification is estimatedfor all stars. Based on observations made at the Haute ProvenceObservatory, France and on data from The Hipparcos Catalogue, ESA.Tables 4, 5 and 6 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr or viahttp://cdsweb.u-strasbg.fr/Abstract.htm

The short-period Cepheid EU Tau. I - New photometric and radial-velocity data
New Johnson UBVRI and Cousins (RI)c photometry of EU Tau from threeobservatories are used to answer the outstanding questions surroundingthe pulsation period of this short-period Cepheid. These data providealmost complete phase coverage of the pulsation cycle. It is confirmedthat EU Tau is pulsating with a single period near 2.1 days in agreementwith that found previously by Fernie. Confusion in the literature aboutthe photometric indices of the comparison star BD 18959 deg near EU Tauis shown to arise largely from misidentifications of BD 18957 deg and BD18959 deg. New radial velocities for EU Tau are reported and compared toearlier observations with CORAVEL. Contemporaneous radial velocities andphotometric data are ideally suited to a surface-brightness analysis ofthis interesting Cepheid.

Photoelectric observations of lunar occultations. XII
Occultation observations of 414 events observed between 6 July 1979 and4 September 1980 with the 0.76-m telescope of McDonald Observatory arereported. Timings and data on double stars are given. Angular diameterinformation in six cases is included. The stars concerned with their runnumbers are: SAO 161754 (5270); 94027 (Alpha Tau) (5319, 5381, 5454);159370 (Gamma Lib) (5325, 5571); 162413 (43 Sgr) (5332); 97472 (3 Cnc)(5414); and 93955 (Theta Tau) (5445).

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观测天体数据

星座:金牛座
右阿森松:05h45m49.23s
赤纬:+18°47'32.8"
视星:7.496
距离:961.538 天文距离
右阿森松适当运动:1.6
赤纬适当运动:-4.6
B-T magnitude:7.597
V-T magnitude:7.505

目录:
适当名称   (Edit)
HD 1989HD 38336
TYCHO-2 2000TYC 1307-1096-1
USNO-A2.0USNO-A2 1050-02532148
HIPHIP 27191

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