We report high-resolution spectroscopic observations of the young star HD 34700 , which confirm it to be a double-lined spectroscopic binary .
We derive an accurate orbital solution with a period of 23.4877 \pm 0.0013 days and an eccentricity of e = 0.2501 \pm 0.0068 .
The stars are found to be of similar mass ( M _ { 2 } / M _ { 1 } = 0.987 \pm 0.014 ) and luminosity .
We derive also the effective temperatures ( 5900 K and 5800 K ) and projected rotational velocities ( 28 km s ^ { -1 } and 22 km s ^ { -1 } ) of the components .
These values of v \sin i are much higher than expected for main-sequence stars of similar spectral type ( G0 ) , and are not due to tidal synchronization .
We discuss also the indicators of youth available for the object .
Although there is considerable evidence that the system is young —strong infrared excess , X-ray emission , Li i \lambda 6708 absorption ( 0.17 Å equivalent width ) , H \alpha emission ( \sim 0.6 Å ) , rapid rotation— the precise age can not yet be established because the distance is unknown .