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TYC 2573-972-1


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Four-color UVBY and H-beta photometry of high-velocity and metal-poor stars. I - The catalogue of observations
A catalog of four-color uvby and H-beta photometry for 711 high-velocityand metal-poor stars is given. The selection of the stars and theobserving and reduction techniques used to obtain these data arediscussed. The photometry has been transformed closely onto the standarduvby-beta system. The errors of the data have been estimated using bothinternal and external comparisons. The data are uniform over the sky;that is, there are no significant north-south differences. For the largemajority of stars the mean errors of V, m1, c1, and beta are less than +or - 0.008 mag, and the error of b-y is less than + or - 0.005 mag.Values of V, b-y and beta and rough photometric classifications aregiven for 63 red and/or evolved stars that fall outside the range of thephotometric transformations.

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Osservazione e dati astrometrici

Costellazione:Corona Boreale
Ascensione retta:16h01m44.22s
Declinazione:+30°02'41.0"
Magnitudine apparente:9.796
Moto proprio RA:-12.6
Moto proprio Dec:-34.9
B-T magnitude:10.852
V-T magnitude:9.884

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 2573-972-1
USNO-A2.0USNO-A2 1200-07727847
HIPHIP 78514

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