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We report a spin-orbit misalignment for the hot-Jupiter HATS-14b, measuring aprojected orbital obliquity of |lambda|= 76 -5/+4 deg. HATS-14b orbits a highmetallicity, 5400 K G dwarf in a relatively short period orbit of 2.8 days.This obliquity was measured via the Rossiter-McLaughlin effect, obtained withobservations from Keck-HIRES. The velocities were extracted using a noveltechnique, optimised for low signal-to-noise spectra, achieving a highprecision of 4 m/s point-to-point scatter. However, we caution that ouruncertainties may be underestimated. Due to the low rotational velocity of thestar, the detection significance is dependent on the vsini prior that isimposed in our modelling. Based on trends observed in the sample of hotJupiters with obliquity measurements, it has been suggested that these planetsmodify the spin axes of their host stars, with an efficiency that depends onthe stellar type and orbital period of the system. In this framework,short-period planets around stars with surface convective envelopes, likeHATS-14b, are expected to have orbits that are aligned with the spin axes oftheir host stars. HATS-14b, however, is a significant outlier from this trend,challenging the effectiveness of the tidal realignment mechanism.

A high obliquity orbit for the hot-Jupiter HATS-14b transiting a 5400K star