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HD 137782


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The infrared void in the Lupus dark clouds revisited: a polarimetric approach
The results of B-band CCD imaging linear polarimetry obtained for starsfrom the Hipparcos catalogue are used to re-examine the distribution ofthe local interstellar medium towards the IRAS 100-μm emission voidin the Lupus dark clouds. The analysis of the obtainedparallax-polarization diagram assigns to the dark cloud Lupus1 adistance between 130 and 150pc and assures the existence of a low columndensity region coincident with the observed infrared void. Moreover,there are clear indications of the existence of absorbing material atdistances closer than 60-100pc, which may be associated with theinterface boundary between the Local Bubble and its neighbourhood LoopIsuperbubble.

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Observation and Astrometry data

Constellation:Lupus
Right ascension:15h29m03.67s
Declination:-33°09'16.2"
Apparent magnitude:9.407
Proper motion RA:98.1
Proper motion Dec:-47
B-T magnitude:10.109
V-T magnitude:9.465

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 137782
TYCHO-2 2000TYC 7318-575-1
USNO-A2.0USNO-A2 0525-19496766
HIPHIP 75794

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