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arxiv: 1209.2080 · v1 · pith:C3SUWJE6new · submitted 2012-09-10 · 🌌 astro-ph.GA

The distance to the young open cluster Westerlund 2

classification 🌌 astro-ph.GA
keywords clustercarinadirectiondistancesim3westerlundyounganomalous
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Evidence is presented indicating that the young star cluster Westerlund~2 lies $d_{\odot}\sim3.0$ kpc in the direction of Carina. The distance is tied partly to new $UBVRI_c$ photometry and revised spectral classifications for cluster stars, which imply that dust in the direction of Carina is characterized by an anomalous extinction law ($R_V\sim3.8$). That result was determined from a multi-faceted approach relying on the variable-extinction and color excess methods.

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