Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.1101b&link_type=abstract
American Astronomical Society, 200th AAS Meeting, #11.01; Bulletin of the American Astronomical Society, Vol. 34, p.658
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
A sample of stars from the University of Virginia southern hemisphere parallax program has been tested for possible astrometric perturbations due to low-mass companions. The data were taken from CCD parallax observations with the one-meter reflector at the Siding Spring Observatory, Coonabarabran, Australia. Following our standard central overlap solution for parallax and proper motion, the residuals were subjected to a time-series analysis using the Lomb periodogram method (Press et al. 1992). The selected objects are late M-type stars with large parallaxes, mostly within 10 parsecs, not known to be binaries. They include LHS 288, LHS 337, LHS 532, LHS 1134, LHS 1565, LHS 2739, LHS 2813, and LHS 3064. We acknowledge support from NSF grant AST 98-20711 and from the Research School of Astronomy and Astrophysics, Australian National University.
Bartlett Jennifer L.
Begam Michael C.
Ianna Philip A.
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