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Classification of Population II Stars in the Vilnius Photometric System. I. Methods
The methods used for classification of Population II stars in theVilnius photometric system are described. An extensive set of standardswith known astrophysical parameters compiled from the literature sourcesis given. These standard stars are classified in the Vilnius photometricsystem using the methods described. The accuracy of classification isevaluated by a comparison of the astrophysical parameters derived fromthe Vilnius photometric system with those estimated from spectroscopicstudies as well as from photometric data in other systems. For dwarfsand subdwarfs, we find a satisfactory agreement between our reddeningsand those estimated in the uvbyscriptstyle beta system. The standarddeviation of [Fe/H] deter mined in the Vilnius system is about 0.2 dex.The absolute magnitude for dwarfs and subdwarfs is estimated with anaccuracy of scriptstyle <=0.5 mag.

Photoelectric Photometry of 241 Stars in the Vilnius System
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A Search for Metal-Deficient Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJS...22..117B&db_key=AST

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Dades d'Observació i Astrometria

Constel·lació:Pegasus
Ascensió Recta:00h06m47.00s
Declinació:+23°29'37.7"
Magnitud Aparent:8.711
Distancia:157.233 parsecs
Moviment propi RA:41.8
Moviment propi Dec:1.2
B-T magnitude:9.163
V-T magnitude:8.749

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 187
TYCHO-2 2000TYC 1729-1598-1
USNO-A2.0USNO-A2 1125-00044519
HIPHIP 557

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