Radial Velocities For a New Eclipsing M-dwarf Binary

Details Radial Velocities For a New Eclipsing M-dwarf Binary Radial Velocities For a New Eclipsing M-dwarf Binary

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006noao.prop..371b&link_type=abstract

NOAO Proposal ID #2006B-0371

Physics

Scientific paper

We propose timed spectroscopic observations of the faintest eclipsing M-dwarf/M-dwarf system yet detected to obtain relative radial velocities of the components. These spectroscopic observations will complement an exhaustive set of lightcurves based upon 2MASS data, SDSS data, and timed infrared followup observations. The photometric data yield a precise period for this system. We propose acquiring GMOS spectra of the system from Gemini-N covering both quadratures (radial velocity maxima). Resolution of the radial velocity amplitudes will allow us to derive the physical parameters for the components, including the individual masses, radii, and temperatures. Theoretical stellar evolution models have been unable to adequately describe the components of the 7 previously measured eclipsing M-dwarf systems. Due to the rarity of these systems and the possibility of resolving the physical properties of the components, these radial velocity measurements are invaluable in helping to constrain M-dwarf stellar evolution models.

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