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$\vec{V}$ -($\vec{V-I}$) distance to Lupus 2

2001; EDP Sciences; Volume: 373; Issue: 2 Linguagem: Inglês

10.1051/0004-6361

1432-0746

J. Knude, A. S. Nielsen,

Astro and Planetary Science

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 ~600 more like the masses for the other Lupus clouds, but more interestingly the virial ratio of the two C18O cores in Lupus 2 will be lowered by a factor of 2.4 making Lupus 2 more like Taurus than the remaining Lupus cores