New BVIc Photometry of the Pleiades

Details New BVIc Photometry of the Pleiades New BVIc Photometry of the Pleiades

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545522k&link_type=abstract

American Astronomical Society, AAS Meeting #215, #455.22; Bulletin of the American Astronomical Society, Vol. 42, p.476

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Scientific paper

We have obtained new BVIc photometry for 332 members of the Pleiades open cluster. This more than doubles the amount of Johnson/Cousins photometric data for the low-mass stars of this cluster. Our target stars are proper motion members fainter than V = 9 for which there is no published photoelectric photometry in the Cousins system (or where only V or Ic were previously observed). We identify that 3% of the stars we observed are probable non-members, based on their significant displacement either above or below the Pleiades locus in color-magnitude diagrams.
We use the new photometry to redefine the single-star main sequence isochrone for the Pleiades. We compare the new Pleiades main-sequence to accurate published photometry for low mass stars in two other well-studied, older nearby open clusters - Praesepe and the Hyades. The new observations allow us to provide improved measures of how youth (primarily via rapid rotation) affects the SEDs of young, low mass stars, as previously discussed in Stauffer et al. (2003).

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