0000000001194417

AUTHOR

Christopher Lidman

showing 2 related works from this author

On the Age, Spectral Type, Orbit, and Comparison to Evolutionary Models of AB Dor C

2005

PhysicsT Tauri starSpace and Planetary ScienceK-type main-sequence starBrown dwarfAstronomyAstronomy and AstrophysicsAstrophysicsOrbit (control theory)Type (model theory)Stellar classificationMain sequenceProceedings of the International Astronomical Union
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AB Doradus C: age, spectral type, orbit, and comparison to evolutionary models

2005

We expand upon the results of Close et al. 2005 regarding the young, low-mass object AB Dor C and its role as a calibration point for theoretical tracks. We present an improved spectral reduction and a new orbital solution with two additional epochs. Our improved analysis confirms our spectral type of M8 (+/- 1) and mass of 0.090+/-0.003 solar masses for AB Dor C. Comparing the results for AB Dor C with other young, low-mass objects with dynamical masses we find a general trend where current evolutionary models tend to over-predict the temperature (or under-predict the mass) for low mass stars and brown dwarfs. Given our precision, there is a ~99% chance that the mass of AB Dor C is underes…

PhysicsSolar massHertzsprung–Russell diagramAstrophysics (astro-ph)Brown dwarfFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsType (model theory)AstrophysicsOrbitsymbols.namesakeStarsSpace and Planetary SciencesymbolsLow MassAstronomische Nachrichten
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