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Starlight polarization in the direction of two H I complexes
Upper limits to the gas/dust ratio in the direction of two complexes arederived based on 21-cm line observations and starlight polarizationmeasurements. Elongated H I structures parallel to the galactic magneticfield suggest that the gas and dust comprise a common cloud or cloudsystem. Dust producing the starlight polarization is mixed with the H Igas, aiding in estimating the distance for the two H I complexes.Distances of 100 pc for the filament at low velocities and of 200 pc foran intermediate-velocity cloud complex (IVC) are established frompolarimetric data, and possible origins for the filaments and IVC aresuggested.
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Observation and Astrometry data
| Constellation: | Οκρίβας |
| Right ascension: | 06h40m21.88s |
| Declination: | -59°07'23.5" |
| Apparent magnitude: | 7.769 |
| Distance: | 490.196 parsecs |
| Proper motion RA: | -7.1 |
| Proper motion Dec: | 10.5 |
| B-T magnitude: | 7.654 |
| V-T magnitude: | 7.76 |
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