AAS 205th Meeting, 9-13 January 2005
Session 22 Open Clusters Young and Old
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[22.10] Narrow Band Photometry of the Calcium H and K lines for Stars in Open Clusters

E. G. Hintz, M.B. Rose (Brigham Young Univ.)

The Ca II K line and the blend of the Ca II H line with H\epsilon are strong indicators of spectral type and are useful in the study of open clusters. Two narrow filters have been fabricated to image separately in the regions of these two lines. The filters are centered at 393.4 nm and 396.9 nm respectively, with each being 3.0 nm wide. We will present two sets of observations; 1) spectroscopic data in the region of Calcium HK over a range of spectral types, and 2) the first photometric images through the new filters.

The spectroscopic observations were taken with the 1.2-m telescope of the Dominion Astrophysical Observatory. While the photometric observations were obtained with the 0.4-m David Derrick telescope of the Orson Pratt Observatory.

The authors would like to acknowledge the support of an AAS Small Research Grant for the purchase of the filters and for travel to DAO. The authors would also like to thank DAO for the use of the 1.2-m telescope.

The author(s) of this abstract have provided an email address for comments about the abstract: doctor@tardis.byu.edu

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.