H-α Photometry of Standard Stars and Open Clusters

Details H-α Photometry of Standard Stars and Open Clusters H-α Photometry of Standard Stars and Open Clusters

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21344203a&link_type=abstract

American Astronomical Society, AAS Meeting #213, #442.03; Bulletin of the American Astronomical Society, Vol. 41, p.319

Astronomy and Astrophysics

Astronomy

Scientific paper

Stars selected from the list of standard stars useful for uvby-β photometry have been observed through H-α wide (21nm) and narrow (3nm) filters to define a standardized H-α photometric system. The selected primary standards are scattered throughout the sky and are all easily observed from the northern hemisphere. The standards cover a wide range of spectral types where the H-α index provides a temperature measure that is free from the effects of atmospheric extinction and interstellar reddening. In addition to the standard star observations, we report observations of stars from the nearby open clusters Coma, Pleiades, Hyades, and NGC 752. These are observations from several years work at the West Mountain and Orson Pratt observatories operated by Brigham Young University.
We would like to thank the Department of Physics and Astronomy at Brigham Young University for continued support of basic research and mentored student projects. Lastly, partial support for this study has been provided from NSF Grant AST-0618209.

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