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HD 138515


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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.

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

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Observation and Astrometry data

Constellation:Loup
Right ascension:15h33m42.66s
Declination:-32°01'56.9"
Apparent magnitude:9.257
Proper motion RA:-66
Proper motion Dec:-25.1
B-T magnitude:9.745
V-T magnitude:9.298

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 138515
TYCHO-2 2000TYC 7318-802-1
USNO-A2.0USNO-A2 0525-19696044
HIPHIP 76190

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