4.6 Article

V-(V-I) distance to Lupus 2

期刊

ASTRONOMY & ASTROPHYSICS
卷 373, 期 2, 页码 714-719

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EDP SCIENCES S A
DOI: 10.1051/0004-6361:20010536

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interstellar medium : individual objects Lupus 2; interstellar medium : extinction interstellar medium : clouds; stars : formation

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We report a possible distance to the star forming cloud Lupus 2 of 360 pc, at least 150 pc larger than previously suggested. Despite the cloud's small angular size and remoteness this distance estimate is corroborated by Hipparcos/Tycho data for field stars. The increased distance changes the mass estimate from 100 to similar to 600 M-circle dot more like the masses for the other Lupus clouds, but more interestingly the virial ratio of the two (CO)-O-18 coresin Lupus 2 will be lowered by a factor of 2.4 making Lupus 2 more like Taurus than the remaining Lupus cores.

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