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Pulkovo compilation of radial velocities for 35495 stars in a common system. Not Available
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.
Empirical temperature calibrations for early-type stars Three temperature calibrations of suitable photometric quantities havebeen derived for O and B stars. A sample of 120 stars with reliableT(eff.) determinations has been used for establishing each calibration.The different calibrations have been critically discussed and compared.Temperature determinations for 1009 program stars have been obtainedwith an accuracy of the order of 10 percent.
Observations of interstellar diffuse absorption band at 4430 A Observations of the interstellar diffuse absorption band at 4430 A for800 O and B stars in Neckel's (1967) catalog are being carried out, and482 spectra obtained up to September 1983 have been reduced. It isconfirmed that the strength of the interstellar diffuse absorption bandat 4430 A does not simply relate to the abundance of interstellar grainson the line of sight. The relation between the color excess E(B-V) andthe equivalent width of the band to the direction of l = 130-140 deg andb = -5 to +5 deg shows that some parameter(s) other than E(B-V) is (are)needed to understand the cause of this band.
Catalogue d'etoiles O et B. Not Available
Etude pour chaque champ de l'absorption et de la repartition des vitesses radiales EN fonction de la distance. Not Available

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Observation and Astrometry data

Constellation:	Cygne
Right ascension:	21^h02^m48.82^s
Declination:	+48Â°31'03.3"
Apparent magnitude:	8.124
Distance:	505.051 parsecs
Proper motion RA:	8.5
Proper motion Dec:	2.8
B-T magnitude:	8.142
V-T magnitude:	8.126

Catalogs and designations:

Proper Names	(Edit)
HD 1989	HD 200615
TYCHO-2 2000	TYC 3592-6225-1
USNO-A2.0	USNO-A2 1350-13339230
HIP	HIP 103872

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