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TYC 7423-947-1

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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.
Catalogue of Metal-Deficient F-Stars to M-Stars - Part One - Stars Classified Spectroscopically - Supplement One Not Available
Metal-Deficient Giants in the Galactic Field - Catalogue and Some Physical Parameters Not Available
Three-dimensional calssification of F-M type halo stars in the Vilnius photometric system Not Available

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Observation and Astrometry data

Constellation:	Sagittaire
Right ascension:	19^h12^m00.49^s
Declination:	-30Â°16'13.1"
Apparent magnitude:	10.474
Proper motion RA:	17
Proper motion Dec:	-2.3
B-T magnitude:	11.726
V-T magnitude:	10.578

Catalogs and designations:

Proper Names	(Edit)
TYCHO-2 2000	TYC 7423-947-1
USNO-A2.0	USNO-A2 0525-40062609
HIP	HIP 94329

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