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Proceedings Paper

Faint companion search to O-stars using the adaptive optics system on the 3.63-m telescope on Haleakala
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Paper Abstract

We present results of our survey of faint companions to O-stars using the adaptive optics (AO) system on the 3.63-meter Advanced Electro-Optical System (AEOS) telescope at the summit of Haleakala, on the island of Maui. The AEOS telescope is part of the United States Air Force's Maui Space Surveillance Site. We have surveyed most of the O-stars brighter than V magnitude 8.0 in the declination range of -25 to +65 degrees for faint companions. We are using the I-band (800 nm central wavelength, 150 nm approximate FWHM) for the survey. This is done for two reasons: 1) the distinctly red filter will de-emphasize the O-star primary and enhance the faint (presumably redder) secondary, increasing the dynamic range; and 2) using I-band allows all of the shorter wavelength light to be sent to the AO system, increasing its performance for fainter stars. We describe the scientific results of our survey as well as the reduction process we used to generate relative photometric results from a 12-bit frame transfer camera with no native ability to generate a bias frame.

Paper Details

Date Published: 7 February 2003
PDF: 7 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.459343
Show Author Affiliations
Nils Henning Turner, Mount Wilson Observatory/Georgia State Univ. (United States)
Theo Armand ten Brummelaar, Mount Wilson Observatory/Georgia State Univ. (United States)
Lewis C. Roberts, The Boeing Co. (United States)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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