ABSOLUTE PROPERTIES OF THE LOW-MASS ECLIPSING BINARY CM DRACONIS

@article{Morales2009ABSOLUTEPO,
  title={ABSOLUTE PROPERTIES OF THE LOW-MASS ECLIPSING BINARY CM DRACONIS},
  author={Juan Carlos Morales and Ignasi Ribas and Carme Jordi and Guillermo Torres and Jos{\'e} A. Gallardo and Edward F. Guinan and David Charbonneau and Marek Wolf and David W. Latham and Guillem Anglada-Escud{\'e} and David H. Bradstreet and Mark E. Everett and Francis T. O'Donovan and Georgi I. Mandushev and Robert D. Mathieu},
  journal={The Astrophysical Journal},
  year={2009},
  volume={691},
  pages={1400 - 1411}
}
Spectroscopic and eclipsing binary systems offer the best means for determining accurate physical properties of stars, including their masses and radii. The data available for low-mass stars have yielded firm evidence that stellar structure models predict smaller radii and higher effective temperatures than observed, but the number of systems with detailed analyses is still small. In this paper, we present a complete reanalysis of one of such eclipsing systems, CM Dra, composed of two dM4.5… 

ABSOLUTE DIMENSIONS OF THE G7+K7 ECLIPSING BINARY STAR IM VIRGINIS: DISCREPANCIES WITH STELLAR EVOLUTION MODELS

We report extensive spectroscopic and differential photometric BVRI observations of the active, detached, 1.309-day double-lined eclipsing binary IM Vir, composed of a G7-type primary and a K7

THE MASS–RADIUS(–ROTATION?) RELATION FOR LOW-MASS STARS

The fundamental properties of low-mass stars are not as well understood as those of their more massive counterparts. The best method for constraining these properties, especially masses and radii, is

THE METALLICITY OF THE CM DRACONIS SYSTEM

The CM Draconis system comprises two eclipsing mid-M dwarfs of nearly equal mass in a 1.27 day orbit. This well-studied eclipsing binary has often been used for benchmark tests of stellar models,

GJ 3236: A NEW BRIGHT, VERY LOW MASS ECLIPSING BINARY SYSTEM DISCOVERED BY THE MEarth OBSERVATORY

We report the detection of eclipses in GJ 3236, a bright (I = 11.6), very low mass binary system with an orbital period of 0.77 days. Analysis of light and radial velocity curves of the system

Fundamental properties of low-mass stars in eclipsing binary systems

Eclipsing binary systems offer a unique opportunity to accurately measure the fundamental properties of stars. In the past years, masses and radii of low-mass stars in these systems have been

Discovery and characterization of detached M dwarf eclipsing binaries in the WFCAM Transit Survey

We report the discovery of 16 detached M-dwarf eclipsing binaries with J < 16 mag and provide a detailed characterisation of three of them, using high-precision infrared light curves from the WFCAM

A highly unequal-mass eclipsing M-dwarf binary in the WFCAM Transit Survey

In this paper we present the discovery of a highly unequal-mass eclipsing M-dwarf binary, providing a unique constraint on binary star formation theory and on evolutionary models for low-mass binary

Precision modelling of M dwarf stars: the magnetic components of CM Draconis

The eclipsing binary CM Draconis (CM Dra) contains two nearly identical red dwarfs of spectral class dM4.5. The masses and radii of the two components have been reported with unprecedentedly small

MASS AND RADIUS DETERMINATIONS FOR FIVE TRANSITING M-DWARF STARS

We have derived masses and radii for both components in five short-period single-lined eclipsing binary stars discovered by the TrES wide-angle photometric survey for transiting planets. All these

KOI-126: A Triply Eclipsing Hierarchical Triple with Two Low-Mass Stars

The Kepler telescope detected a triple stellar system consisting of a low-mass binary and a poorly sampled fully convective stellar domain offering a crucial benchmark for theoretical stellar models.
...

References

SHOWING 1-10 OF 54 REFERENCES

The Eclipsing Binary V1061 Cygni: Confronting Stellar Evolution Models for Active and Inactive Solar-Type Stars

We present spectroscopic and photometric observations of the eclipsing system V1061 Cyg (P = 2.35 days). A third star is visible in the spectrum, and the system is a hierarchical triple. We combine

Absolute Dimensions of the M-Type Eclipsing Binary YY Geminorum (Castor C): A Challenge to Evolutionary Models in the Lower Main Sequence

We present new spectroscopic observations of the detached late-type double-lined eclipsing binary YY Geminorum (P = 0.814 day), a member of the Castor sextuple system and one of the benchmarks for

GU Bootis: A New 0.6 M☉ Detached Eclipsing Binary

We have found a new low-mass, double-lined, detached eclipsing binary, GU Boo, among a sample of new variables from the ROTSE-I database. The binary has an orbital period of 0.488728 ± 0.000002 days

The eclipsing variable CM Dra: Surface activity and orbital elements

A long series of observations of the low-mass eclipsing system CM Dra (M1, M⊙<0.25M⊙, dM4.5e, V=12.9m, Porb=1.27d) was obtained in 1996–1997 as part of the international TEP (Search for Transits of

Evolution of low-mass star and brown dwarf eclipsing binaries

Context. We examine the evolution of low-mass star and brown dwarf eclipsing binaries. These objects are rapid rotators and are believed to shelter large magnetic fields. Aims. We suggest that

Are Magnetically Active Low-Mass M Dwarfs Completely Convective?

Stars on the main sequence are expected to be completely convective if their mass lies below a certain value, Mcc. Standard stellar structure codes suggest that Mcc is in the range 0.3-0.4 M☉. In the

M dwarfs: effective temperatures, radii and metallicities

We empirically determine effective temperatures and bolometric luminosities for a large sample of nearby M dwarfs, for which high accuracy optical and infrared photometry is available. We introduce a

Observational Limits on Terrestrial-sized Inner Planets around the CM Draconis System Using the Photometric Transit Method with a Matched-Filter Algorithm

A light curve of the eclipsing binary CM Draconis has been analyzed for the presence of transits of planets of size ≥ 2.5 Earth radii (RE), with periods of 60 days or less, and in coplanar orbits

Infrared Colors at the Stellar/Substellar Boundary

We present new infrared JHK photometry for 61 halo and disk stars around the stellar/substellar boundary. We also present new L' photometry for 21 of these stars and for 40 low-mass stars taken from

TrES-4: A Transiting Hot Jupiter of Very Low Density

We report the discovery of TrES-4, a hot Jupiter that transits the star GSC 02620-00648 every 3.55 days. From high-resolution spectroscopy of the star, we estimate a stellar effective temperature of
...