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HD 225019


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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.

A. de Sitter's photographic polar photometry revisited; some remarks on photographic photometry with objective gratings
Not Available

Photographic magnitudes of stars brighter than 7m.75 between +75° and +80° declination (Errata: 11 270)
Not Available

Yerkes actinometry. Zone +73deg to +90deg.
Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Kral-Sefe
Sað Açýklýk:00h02m41.81s
Yükselim:+82°58'23.5"
Görünürdeki Parlaklýk:7.287
Uzaklýk:366.3 parsek
özdevim Sað Açýklýk:-10.4
özdevim Yükselim:-3
B-T magnitude:7.425
V-T magnitude:7.299

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 225019
TYCHO-2 2000TYC 4615-654-1
USNO-A2.0USNO-A2 1725-00002122
HIPHIP 217

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