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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
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| Observations of double stars and new pairs. XIV
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| UBV photometry of stars whose positions are accurately known. II
The present report on the UBV observations of stars with favorableastrometric history gives attention to stars of the BD zones lyingbetween 50 and 54 deg. These observations and their reductions wereperformed from August 1983 to August 1984, as described by Oja (1984).Results are presented as tables for both the standard stars and theprogram stars. Comparisons are conducted between the present Vmagnitudes and those of the NPZT (1982) and AGK3R (1978) catalogs.
| Abundance estimates for the distant anticenter cluster King 8 and Be 19
Spectrophotometric surveys were made of the galactic anticenter openclusters King 8 and Be 19 to obtain abundance data in support ofgalactic evolution studies. The data were taken at Kitt Peak with a 600lines/mm grating centered at 4500 or 4700 A with 9.5 A resolution. Theclusters are 3 kpc beyond the solar system going outward toward the rim.The presence of two early type (A5 or less) stars in King 8 wasconsistent with the stars' photometric positions in the color-magnitudediagram. Both clusters were slightly metal-poor, like the clusters NGC2158 and 2420, which is in accordance with previous estimates of thegalactic abundance gradient.
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Datos observacionales y astrométricos
| Constelación: | Perseo |
| Ascensión Recta: | 02h19m20.25s |
| Declinación: | +53°38'20.9" |
| Magnitud Aparente: | 9.155 |
| Movimiento Propio en Ascensión Recta: | 1.2 |
| Movimiento Propio en Declinación: | -1.7 |
| B-T magnitude: | 9.197 |
| V-T magnitude: | 9.159 |
Catálogos y designaciones:
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