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Paper: Testing Low-Mass Stellar Models: Three New Detached Eclipsing Binaries below 0.75MSolar
Volume: 362, The Seventh Pacific Rim Conference on Stellar Astrophysics
Page: 26
Authors: Lopez-Morales, M.; Shaw, J.S.
Abstract: Full tests of stellar models below 1MSolar have been hindered until now by the scarce number of precise measurements of the stars' most fundamental parameters: their masses and radii. With current observational techniques, the required precision to distinguish between different models (errors < 2-3 %) can only be achieved using detached eclipsing binaries where 1) both stars are similar in mass, i.e. q = M1/M2 ~ 1.0, and 2) each star is a main sequence object below 1MSolar.

Until 2003 only three such binaries had been found and analyzed in detail. Two new systems were published in 2005 (Creevey et al.; Lopez-Morales & Ribas), almost doubling the previous number of data points. Here we present preliminary results for 3 new low-mass detached eclipsing binaries. These are the first studied systems from our sample of 41 new binaries (Shaw & Lopez- Morales, this proceedings). We also provide an updated comparison between the Mass–Radius and the Mass–Teff relations predicted by the models and the observational data from detached eclipsing binaries.

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