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HD 190424


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Mesures de vitesses radiales. VIII. Accompagnement AU sol DU programme d'observation DU satellite HIPPARCOS
We publish 1879 radial velocities of stars distributed in 105 fields of4^{\circ} \times 4^{\circ}. We continue the PPO series \cite[(Fehrenbachet al. 1987;]{Feh87} \cite[Duflot et al. 1990, 1992 and 1995),]{Du90}using the Fehrenbach objective prism method. Table 1 only available inelectronic form at CDS via to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

Visual polarization measurements in the Cepheus flare
We present polarization measurements on a stellar sample located in alarge area in Cepheus. The observations were made with the 2-m telescopeat the Pic du Midi (France), around 4350 A and with an accuracy of thepolarization degree of the order of 0.0001. At large scales, we findthat the galactic magnetic field as given by the direction of thepolarization (alignment of the dust) is, roughly speaking, parallel tothe galactic plane in the Cassiopeia cloud, with a scale size of theorder of 100 pc, while it is turned by about 90 in the Cepheus cloud. Atsmall scales, in both the Cepheus and the Cassiopeia clouds, the COcontent has little correlation with the degree of polarization.

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Observation and Astrometry data

Constellation:りゅう座
Right ascension:20h00m03.98s
Declination:+68°26'12.3"
Apparent magnitude:8.017
Distance:225.225 parsecs
Proper motion RA:5
Proper motion Dec:15.9
B-T magnitude:8.036
V-T magnitude:8.019

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 190424
TYCHO-2 2000TYC 4446-1163-1
USNO-A2.0USNO-A2 1575-04326580
HIPHIP 98439

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