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The diffuse interstellar line at 6284 A
The diffuse interstellar feature at 6284 A has been studied in thespectra of 42 early-type stars. The equivalent width is stronglycorrelated with E(B-V), but still shows much scatter: W equals (1.40 +or - 0.10) E (B-V) /A/ indicating that the reddening scale is correct.Substracting the error contributions of reddening and equivalent width,the remaining scatter of + or - 0.22 A turns out to be of cosmic origin.
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Observation and Astrometry data
| Constellation: | Centaurus |
| Right ascension: | 12h48m15.70s |
| Declination: | -33°08'57.3" |
| Apparent magnitude: | 9.731 |
| Proper motion RA: | -70.2 |
| Proper motion Dec: | 32.1 |
| B-T magnitude: | 10.439 |
| V-T magnitude: | 9.79 |
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