SIMBAD references

2006ApJ...644..475B - Astrophys. J., 644, 475-483 (2006/June-2)

First results from the CHARA array. IV. The interferometric radii of low-mass stars.

BERGER D.H., GIES D.R., McALISTER H.A., TEN BRUMMELAAR T.A., HENRY T.J., STURMANN J., STURMANN L., TURNER N.H., RIDGWAY S.T., AUFDENBERG J.P. and MERAND A.

Abstract (from CDS):

We have measured the angular diameters of six M dwarfs with the CHARA Array, a long-baseline optical interferometer located at Mount Wilson Observatory. Spectral types range from M1.0 V to M3.0 V and linear radii from 0.38 to 0.69 R_☉. These results are consistent with the seven other M dwarf radii measurements from optical interferometry and with those for 14 stars in eclipsing binary systems. We compare all directly measured M dwarf radii to model predictions and find that current models underestimate the true stellar radii by up to 15%-20%. The differences are small among the metal-poor stars but become significantly larger with increasing metallicity. This suggests that theoretical models for low-mass stars may be missing some opacity source that alters the computed stellar radii.

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Journal keyword(s): Infrared: Stars - Instrumentation: High Angular Resolution - Instrumentation: Interferometers - stars: individual (GJ 15A) - stars: individual (GJ 514) - stars: individual (GJ 526) - stars: individual (GJ 687) - stars: individual (GJ 752A) - stars: individual (GJ 880) - Stars: Late-Type

Simbad objects: 25

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