the Calan-Hertfordshire Extrasolar Planet Search'
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stars: planetary systems; planets and satellites: formation; stars: activity; stars: low-mass; stars: solar-type

Introduction
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After the discovery and confirmation of the hot Jupiter Dimidium (aka. Helvetios $b$ or 51 Pegasi $b$) in 1995, our view of giant planets was changed forever. Giant planets orbiting dwarf stars like the Sun have been found to inhabit many regions of the parameter space. The first of these were found orbiting their stars with periods much shorter than those of Jupiter in our solar system (e.g. [@mayor95]; [@marcy96]). More recently as the number of giant planets has grown, a new population of *eccentric gas giants* has been shown to exist (e.g. [@jones06]; [@tamuz08]; [@arriagada10]), making up a large fraction of the known systems, at least around main sequence stars since the same high fraction does not appear to be present around giant stars ([@jones14]). These planets seem to span the full range of masses from the sub-Jupiter range all the way up to the mass boundary between giant planets and brown dwarfs.

It has been thoroughly demonstrated that there is a clear bias to metal-rich stars hosting giant planets across the currently sampled range of orbital 