The Lick-Carnegie Exoplanet Survey: HD32963 -- A New Jupiter Analog Orbiting a Sun-like Star

TL;DR

This study reports the discovery of a Jupiter-like exoplanet orbiting a Sun-like star using long-term radial velocity data, highlighting the importance of extended surveys in detecting such analogs.

Contribution

First detection of a Jupiter analog with a long-period orbit around a Sun-like star using high-precision radial velocities.

Findings

Detected a Jupiter analog with a 6.49-year orbit.

Estimated Jupiter analog frequency in surveyed stars at about 3%.

Demonstrated the value of long-term RV monitoring for exoplanet discovery.

Abstract

We present a set of 109 new, high-precision Keck/HIRES radial velocity (RV) observations for the solar-type star HD 32963. Our dataset reveals a candidate planetary signal with a period of 6.49 $\pm$ 0.07 years and a corresponding minimum mass of 0.7 $\pm$ 0.03 Jupiter masses. Given Jupiter's crucial role in shaping the evolution of the early Solar System, we emphasize the importance of long-term radial velocity surveys. Finally, using our complete set of Keck radial velocities and correcting for the relative detectability of synthetic planetary candidates orbiting each of the 1,122 stars in our sample, we estimate the frequency of Jupiter analogs across our survey at approximately 3%.