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Distribution of B5 to A5 stars at (l, b) = (253 deg, -7 deg)
A study to V of about 12 mag is conducted for the distribution ofinterstellar extinction and early type stars (up to A5) in the (l, b) =(253 deg, -7 deg) field. The space density of B5, B8-A0, and A2-A5 starsis found to be normal for a field outside the galactic plane, and thestellar and extinction data indicate that the direction in question liesout of the matter plane of the Milky Way at least to 3 kpc. The higherextinction of Bochun 15 and the absence of background galaxies, however,suggest the possible presence of the galactic warp at -7 deg, atdistances beyond about 5 kpc, as well as a total higher extinction thanthe maximum of E(B-V) = 0.53 for d greater than 10 kpc, as found at (l,b) = (245 deg, zero deg).
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Observation and Astrometry data
| Constellation: | とも座 |
| Right ascension: | 07h35m16.77s |
| Declination: | -46°34'39.6" |
| Apparent magnitude: | 7.617 |
| Distance: | 326.797 parsecs |
| Proper motion RA: | -5.6 |
| Proper motion Dec: | 8 |
| B-T magnitude: | 7.698 |
| V-T magnitude: | 7.624 |
Catalogs and designations:
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