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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
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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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Osservazione e dati astrometrici

Costellazione:Sagittario
Ascensione retta:19h12m00.49s
Declinazione:-30°16'13.1"
Magnitudine apparente:10.474
Moto proprio RA:17
Moto proprio Dec:-2.3
B-T magnitude:11.726
V-T magnitude:10.578

Cataloghi e designazioni:
Nomi esatti
TYCHO-2 2000TYC 7423-947-1
USNO-A2.0USNO-A2 0525-40062609
HIPHIP 94329
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