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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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Osservazione e dati astrometrici
| Costellazione: | Lupo |
| Ascensione retta: | 15h59m52.83s |
| Declinazione: | -31°10'06.4" |
| Magnitudine apparente: | 6.577 |
| Distanza: | 118.483 parsec |
| Moto proprio RA: | 12.4 |
| Moto proprio Dec: | -36.5 |
| B-T magnitude: | 7.834 |
| V-T magnitude: | 6.681 |
Cataloghi e designazioni:
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NEWS@SKY (Science&Space News)
