Standardization of Hα Photometry

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Selected standard stars as well as main sequence stars in several nearby open clusters were observed through Hα wide (21nm) and narrow (3nm) bands in order to define a standardized Hα photometric system. Using a color index centered on a single wavelength will eliminate effects resulting from atmospheric extinction and produce a reddening-free temperature index. Our Hα temperature calibration will also include later-type stars than current Hβ catalogues. Data for this project were collected from Brigham Young University's Orson Pratt and West Mountain observatories.
We would like to thank the Department of Physics and Astronomy at Brigham Young University for their continued support of our research.

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