Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-26T04:19:03.218Z Has data issue: false hasContentIssue false
  • English
  • Français

Binary Orbits from Interferometric Data

Published online by Cambridge University Press:  12 April 2016

C.A. Hummel  and
J.T. Armstrong
C.A. Hummel
Affiliation:
NRL/USNO OIP and USRA, U.S. Naval Observatory, 34th St. & Massachusetts Ave. NW, Washington, DC 20390, USA
J.T. Armstrong
Affiliation:
NRL/USNO OIP and USRA, U.S. Naval Observatory, 34th St. & Massachusetts Ave. NW, Washington, DC 20390, USA

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Using the variable baseline of the Mark III Optical Interferometer (Shao et al. 1988) with lengths ranging from 3 to 31.5 m, we measured the fringe visibility of stars in three 25 nm bandpass filters, at wavelengths between 800 nm and 450 nm. This setup gives fringe spacings ranging from 55 mas to 3 mas.

255 stars brighter than fifth magnitude and north of –10° declination were selected from the Batten et al. (1989) catalog of spectroscopic binaries. We compiled values for the orbital axes from the McAlister & Hartkopf (1988) catalog. If unknown (in the majority of cases), they were estimated from the masses predicted from the spectral types, the periods (if known), and the distances to the binaries. Priority was given to the binaries with orbital axes between 3 mas and 40 mas. Observational procedures and the calibration of the data are described by Armstrong et al. (1992). Statistical and calibration uncertainties are in the range of 1% (red channel) to 10% (blue channel).

Type
High Resolution At Visual Wavelengths
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 552 - 554
Copyright
Copyright © Astronomical Society of the Pacific 1992

References

Armstrong, J.T., Mozurkewich, D., Vivekanand, M., Simon, R.S., Johnston, K.J., Pan, X.-P., Shao, M., & Colavita, M.M. 1992, AJ, 104, 241 CrossRefGoogle Scholar
Batten, A.H., Fletcher, J.M., & MacCarthy, D.G. 1989, Eighth Catalogue of the Orbital Elements of Spectroscopic Binary Systems, Publ. Dominion Astrophys. Obs., 17 Google Scholar
McAlister, H.A. & Hartkopf, W.I. 1988, Second Catalog of Interferometric Measurements of Binary Stars, CHARA Contrib. No. 2Google Scholar
Shao, M., Colavita, M.M., Hines, B.E., Staelin, D.H., Hutter, D.J., Johnston, K.J., Mozurkewich, D., Simon, R.S., Hershey, J.L., Hughes, J.A., & Kaplan, G.H. 1988, A&A, 193, 357 Google Scholar