Binary Star Differential Photometry Using the Adaptive Optics System at Mount Wilson Observatory

Details Binary Star Differential Photometry Using the Adaptive Optics System at Mount Wilson Observatory Binary Star Differential Photometry Using the Adaptive Optics System at Mount Wilson Observatory

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aj....119.2403t&link_type=abstract

The Astronomical Journal, Volume 119, Issue 5, pp. 2403-2414.

Physics

Optics

43

Stars: Binaries: General, Stars: Binaries: Visual, Instrumentation: Adaptive Optics, Techniques: Photometric

Scientific paper

We present photometric and astrometric results for 36 binary systems observed with the natural guide star adaptive optics system of the Mount Wilson Institute on the 100 inch (2.5 m) Hooker Telescope. The measurements consist of differential photometry in U, B, V, R, and I filters along with astrometry of the relative positions of system components. Magnitude differences were combined with absolute photometry found in the literature of the combined light for systems to obtain apparent magnitudes for the individual components at standard bandpasses, which in turn led to color determinations and spectral types. The combination of these results with Hipparcos parallax measurements yielded absolute magnitudes and allowed us to plot the components on an H-R diagram. To further examine the reliability and self-consistency of these data, we also estimated system masses from the spectral types. Based on observations made at Mount Wilson Observatory, operated by the Mount Wilson Institute under an agreement with the Carnegie Institution of Washington.

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