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تسجيل مستخدم جديدThe Parallax of VHS J1256-1257 from CFHT and Pan-STARRS 1
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We present new parallax measurements from the CFHT Infrared Parallax Program and the Pan-STARRS 3$pi$ Steradian Survey for the young ($approx150-300$ Myr) triple system VHS J125601.92$-$125723.9. This system is composed of a nearly equal-flux binary (AB) and a wide, possibly planetary-mass companion (b). The systems published parallactic distance ($12.7pm1.0$ pc) implies absolute magnitudes unusually faint compared to known young objects and is in tension with the spectrophotometric distance for the central binary ($17.2pm2.6$ pc). Our CFHT and Pan-STARRS parallaxes are consistent, and the more precise CFHT result places VHS J1256-1257 at $22.2^{+1.1}_{-1.2}$ pc. Our new distance results in higher values for the companions mass ($19pm5$ M$_{rm Jup}$) and temperature ($1240pm50$ K), and also brings the absolute magnitudes of all three components into better agreement with known young objects.
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