SIMBAD references

2002ApJ...569..863P - Astrophys. J., 569, 863-871 (2002/April-3)

The smallest mass ratio young star spectroscopic binaries.

PRATO L., SIMON M., MAZEH T., McLEAN I.S., NORMAN D. and ZUCKER S.

Abstract (from CDS):

Using high-resolution near-infrared spectroscopy with the Keck Telescope, we have detected the radial velocity signatures of the cool secondary components in four optically identified pre-main-sequence, single-lined spectroscopic binaries. All are weak-lined T Tauri stars with well-defined center-of-mass velocities. The mass ratio for one young binary, NTTS 160905-1859, is M2/M1=0.18±0.01, the smallest yet measured dynamically for a pre-main-sequence spectroscopic binary. These new results demonstrate the power of infrared spectroscopy for the dynamical identification of cool secondaries. Visible-light spectroscopy, to date, has not revealed any pre-main-sequence secondary stars with masses <0.5 M, while two of the young systems reported here are in that range. We compare our targets with a compilation of the published young, double-lined spectroscopic binaries and discuss our unique contribution to this sample.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Spectroscopic - Stars: Fundamental Parameters - Stars: Pre-Main-Sequence

Errata: erratum vol. 598, p. 1409 (2003)

Simbad objects: 64

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2019.12.06-06:35:41

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