Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341013m&link_type=abstract
American Astronomical Society, AAS Meeting #213, #410.13; Bulletin of the American Astronomical Society, Vol. 41, p.213
Astronomy and Astrophysics
Astronomy
Scientific paper
The young triple system NTTS 155808-2219 was initially identified as a single-lined spectroscopic binary with a tertiary component at 0.193 arcseconds. Using high-resolution infrared spectra, acquired with NIRSPEC on Keck II, we measured radial velocities for the secondary in the spectroscopic system. We have also compiled a large number of radial velocity measurements, that span most of the 17 day period, from visible light observations made from 1987 June to 1993 April employing echelle spectrographs on the Multiple Mirror Telescope and the 1.5-m Tillinghast reflector at the F.L. Whipple Observatory, both atop Mount Hopkins in Arizona. By combining visible light and infrared data to compute the orbital solution we determine the mass ratio to be 0.74 ± 0.02. We discuss the consistency of our results with previously published data on this system and the possibility that this system is eclipsing, providing a possible method for the determination of absolute masses.
Mace Gregory N.
Mathieu Renaud
Prato Lisa
Torres Gabino
Wasserman Larry
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