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HD 193115

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Interstellar extinction in the vicinity of the North America and Pelican Nebulae. II The results of photoelectric photometry of 564 stars in the Vilniusseven-color system in three areas near the North America and PelicanNebulae are given. Photometric spectral types, absolute magnitudes,color excesses, interstellar extinction,s and distances to the stars aredetermined. We find that the dark cloud separating both nebulae is at580 pc distance. A number of stars immersed in the dark cloud have beenfound. It seems that the dark cloud extends south down to 40 degdeclination. The area southwest of alpha Cygni in the declination zones42 deg and 43 deg is comparatively transparent at least up to 1 kpc.
Radial velocity measurements. IV - Ground-based accompaniment to the HIPPARCOS observation program The paper presents 396 radial velocities of stars distributed in 19fields of 4 x 4 degrees. The study employs the Fehrenbach objectiveprism method and the same measuring technique used in a previous paper(Fehrenbach et al., 1987).
The spectra, magnitudes and colours of O-A type stars in an area of the Milky Way, with the Center alpha = 20h16m, delta = +42 D 30'. Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Kugu
Sað Açýklýk:	20^h16^m51.78^s
Yükselim:	+43Â°40'59.9"
Görünürdeki Parlaklýk:	7.953
Uzaklýk:	325.733 parsek
özdevim Sað Açýklýk:	7.7
özdevim Yükselim:	0.9
B-T magnitude:	8.214
V-T magnitude:	7.975

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 193115
TYCHO-2 2000	TYC 3163-555-1
USNO-A2.0	USNO-A2 1275-13754511
HIP	HIP 99960

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