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Extinction law survey based on UV ANS photometry
The paper presents an extensive survey of interstellar extinction curvesderived from the ANS photometric measurements of early type starsbelonging to our Galaxy. This survey is more extensive and deeper thanany other one, based on spectral data. The UV color excesses aredetermined with the aid of 'artificial standards', a new techniqueproposed by the authors which allows the special check of Sp/L match ofa target and the selected standard. The results indicate that extinctionlaw changes from place to place.
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Observation and Astrometry data
| Constellation: | Hercules |
| Right ascension: | 17h37m04.40s |
| Declination: | +20°15'31.9" |
| Apparent magnitude: | 7.791 |
| Distance: | 112.613 parsecs |
| Proper motion RA: | 3.2 |
| Proper motion Dec: | 18.4 |
| B-T magnitude: | 8.11 |
| V-T magnitude: | 7.818 |
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