More substellar/stellar companions to giant stars from Pan-Pacific Planet Search

The Pan-Pacific Planet Search III: Five companions orbiting giant stars

Quote :

We report a new giant planet orbiting the K giant HD 155233, as well as four stellar-mass companions from the Pan-Pacific Planet Search, a southern hemisphere radial velocity survey for planets orbiting nearby giants and subgiants. We also present updated velocities and a refined orbit for HD 47205b (7 CMa b), the first planet discovered by this survey. HD 155233b has a period of 885±63 days, eccentricity e=0.03±0.20, and m sin i=2.0±0.5 M_jup. The stellar-mass companions range in m sin i from 0.066 M_sun to 0.33 M_sun. Whilst HD 104358B falls slightly below the traditional 0.08 M_sun hydrogen-burning mass limit, and is hence a brown dwarf candidate, we estimate only a 50% a priori probability of a truly substellar mass.

Another bunch of planet candidates around low-luminosity giants:

Wittenmyer et al. "The Pan-Pacific Planet Search. VIII. Complete results and the occurrence rate of planets around low-luminosity giants"
https://arxiv.org/abs/1911.11954

Candidate planetary mass companions around HD 6037, HD 13652, HD 114899, HD 126105, HD 159743 and HD 205577.
Candidate brown dwarf companions around HD 115066 and HD 121156.

It's a radial velocity survey, objects in spectrograph may be more massive than they appear.

The orbit of that planet candidate orbiting HD 205577 is rather remarkable. With the high eccentricity, and given the Gaia DR2 value for the radius of the star, the planet's periapsis is just under 1 stellar radius from the surface.

That HD 205577 planet looks pretty interesting. If confirmed, it would rival HD 20782 b for the most eccentric planetary orbit.