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MAP determinations of the parallaxes of stars in the regions of HD 2665, BD +68.946 deg, and Lambda OphiuchiThe Multichannel Astrometic Photometer and new optical system of the Allegheny Observatory have been used to obtain parallaxes of stars in the regions of HD 2665, BD +68.946 deg, and Lambda Ophiuchi. HD 2665 is found to have an absolute visual magnitude of 1.6 + or - 0.4 and a distance of 149 + or - 28 pc. It is shown that the Lambda Ophiuchi system has a parallax of 23.5 + or - 2.1 mas and that its A0 V and A4 V components have masses of 2.7 + or - 0.7 and 1.5 + or - 0.4 solar masses, respectively.
Document ID
19890048779
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gatewood, George (Allegheny Observatory Pittsburgh, PA, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1989
Publication Information
Publication: Astronomical Journal
Volume: 97
ISSN: 0004-6256
Subject Category
ASTRONOMY
Funding Number(s)
CONTRACT_GRANT: NSF AST-86-17642
CONTRACT_GRANT: NAG2-53
Distribution Limits
Public
Copyright
Other