Other
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542421b&link_type=abstract
American Astronomical Society, AAS Meeting #215, #424.21; Bulletin of the American Astronomical Society, Vol. 42, p.334
Other
Scientific paper
We present preliminary results of the angular diameter measurements of low-mass, K- and M-type main sequence stars from interferometric observations with the CHARA Array. The principal goal of this study consists of providing direct measurements of linear radii and effective temperatures for these stars. The sparse amount of data currently available on late-type stellar radii and temperatures indicates a continuing discrepancy between theory and observation, which seems to be related to stellar activity, metallicity, and possibly convection. Targets were selected based on the following criteria: (1) to be in a region of mass-radius space covering both sides of the transition from partial to full atmospheric convection that is thought to take place below 0.35 M&sun;, and (2) to cover a range of [Fe/H]. This project is uniquely suited by the long baselines of CHARA and will shed light to the nature of disagreement between stellar atmosphere models and observations, and in terms of its implications for other areas of study for low-mass stars, such as the detection and characterization of habitable planets orbiting these objects.
Boyajian Tabetha S.
Brummelaar Theo ten
Ciardi David
Farrington Chris
Goldfinger P.
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