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UBV photoelectric catalogue (1986). II - Analysis
The UBV photoelectric data of the stars presenting several entries inthe 1986 edition of the UBV catalog have been systematicallyintercompared, and this paper presents a discussion of the stars forwhich discrepancies larger than 0.2 mag were found. Thirty-six probablyvariable stars have been detected, among which 18 are Be stars. Sixtyfurther stars present differences in the V magnitude larger than 0.2mag. Sixteen stars already appear in the NSV catalog. Although manyproblems are probably due to poor observations, new (eclipsing) variablestars may be found in this sample. Complete disagreement is foundbetween the values published from two independent sources in 34 cases. Afirst analysis of the quality of the UBV data shows that 65 percent ofthe differences in the V magnitude and in U-B color, for respectively11,500 and 7200 stars with two sources of data, are smaller than 0.04.The scatter on the B-V index appears to be smaller, since the samepercentage reaches 79 percent.
| Photoelectric photometry of late type stars in the direction opposed to galactic rotation
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974A&AS...16..269G&db_key=AST
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Observation and Astrometry data
| Constellation: | Ιστία |
| Right ascension: | 09h43m48.16s |
| Declination: | -42°51'04.4" |
| Apparent magnitude: | 8.463 |
| Distance: | 117.925 parsecs |
| Proper motion RA: | 9.7 |
| Proper motion Dec: | 3.6 |
| B-T magnitude: | 9.024 |
| V-T magnitude: | 8.51 |
Catalogs and designations:
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