142 citations · 946 across the 22 of their papers we have counts for
22 papers
Sub-Jupiter Gas Giants Orbiting Giant Stars Uncovered using a Bayesian Framework
J. S. Jenkins, M. I. Jones, J. I. Vines +6
Giant stars have been shown to be rich hunting grounds for those aiming to detect giant planets orbiting beyond ~0.5 AU. Here we present two planetary systems around bright giant s…
A low-mass triple system with a wide L/T transition brown dwarf component: NLTT 51469AB/SDSS 2131-0119
B. Gauza, V. J. S. Béjar, A. Pérez-Garrido +6
We demonstrate that the previously identified L/T transition brown dwarf SDSS J213154.43-011939.3 (SDSS 2131-0119) is a widely separated (82.3'', 3830 au) common proper motio…
A candidate super-Earth planet orbiting near the snow line of Barnard's star
I. Ribas, M. Tuomi, A. Reiners +60
At a distance of 1.8 parsecs, Barnard's star (Gl 699) is a red dwarf with the largest apparent motion of any known stellar object. It is the closest single star to the Sun, second…
Parallaxes of southern extremely cool objects III: 118 L \& T dwarfs
R. L. Smart, B. Bucciarelli, H. R. A. Jones +17
We present new results from the Parallaxes of Southern Extremely Cool dwarfs program to measure parallaxes, proper motions and multi-epoch photometry of L and early T dwarfs. The o…
SPECIES I: Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars
M. G. Soto, J. S. Jenkins
The detection and subsequent characterisation of exoplanets are intimately linked to the characteristics of their host star. Therefore, it is necessary to study the star in detail…
The Pan-Pacific Planet Search VII: The most eccentric planet orbiting a giant star
Robert A. Wittenmyer, M. I. Jones, Jonathan Horner +9
Radial velocity observations from three instruments reveal the presence of a 4 M_jup planet candidate orbiting the K giant HD 76920. HD 76920b has an orbital eccentricity of 0.856$…
A hot Saturn on an eccentric orbit around the giant star EPIC228754001
M. I. Jones, R. Brahm, N. Espinoza +10
Although the majority of radial velocity detected planets have been found orbiting solar-type stars, a fraction of them have been discovered around giant stars. These planetary sys…
Surprisingly different starspot distributions on the near equal-mass equal-rotation-rate stars in the M dwarf binary GJ 65 AB
J. R. Barnes, S. V. Jeffers, C. A. Haswell +4
We aim to understand how stellar parameters such as mass and rotation impact the distribution of starspots on the stellar surface. To this purpose, we have used Doppler imaging to…
Recovering planet radial velocity signals in the presence of starspot activity in fully convective stars
J. R. Barnes, S. V. Jeffers, G. Anglada-Escude +6
Accounting for stellar activity is a crucial component of the search for ever-smaller planets orbiting stars of all spectral types. We use Doppler imaging methods to demonstrate th…
An eccentric companion at the edge of the brown dwarf desert orbiting the 2.4 Msun giant star HIP67537
M. I. Jones, R. Brahm, R. A. Wittenmyer +5
We report the discovery of a substellar companion around the giant star HIP67537. Based on precision radial velocity measurements from CHIRON and FEROS high-resolution spectroscopi…
New spectroscopic binary companions of giant stars and updated metallicity distribution for binary systems
P. Bluhm, M. I. Jones, L. Vanzi +10
We report the discovery of 24 spectroscopic binary companions to giant stars. We fully constrain the orbital solution for 6 of these systems. We cannot unambiguously derive the orb…
New Planetary Systems from the Calan-Hertfordshire Extrasolar Planet Search
J. S. Jenkins, H. R. A. Jones, M. Tuomi +22
We report the discovery of eight new giant planets, and updated orbits for four known planets, orbiting dwarf and subgiant stars using the CORALIE, HARPS, and MIKE instruments as p…
Giant planets around two intermediate-mass evolved stars and confirmation of the planetary nature of HIP67851 c
M. I. Jones, J. S. Jenkins, P. Rojo +1
Precision radial velocities are required to discover and characterize planets orbiting nearby stars. Optical and near infrared spectra that exhibit many hundreds of absorption line…
RAFT I: Discovery of new planetary candidates and updated orbits from archival FEROS spectra
M. G. Soto, J. S. Jenkins, M. I. Jones
A recent reanalysis of archival data has lead several authors to arrive at strikingly different conclusions for a number of planet-hosting candidate stars. In particular, some radi…
A planetary system and a highly eccentric brown dwarf around the giant stars HIP67851 and HIP97233
M. I. Jones, J. S. Jenkins, P. Rojo +2
Context: So far more than 60 substellar companions have been discovered around giant stars. These systems present physical and orbital properties that contrast to those detected or…
The properties of planets around giant stars
M. I. Jones, J. S. Jenkins, P. Bluhm +2
Context: More than 50 exoplanets have been found around giant stars, revealing different properties when compared to planets orbiting solar-type stars. In particular, they are Supe…
No evidence of the planet orbiting the extremely metal-poor extragalactic star HIP13044
M. I. Jones, J. S. Jenkins
CONTEXT: The recent discovery of three giant planets orbiting the extremely metal-poor stars HIP11952 and HIP13044 have challenged theoretical predictions of the core-accretion mod…
Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets. II. A giant planet in a close-in orbit around the RGB star HIP63242
M. I. Jones, J. S. Jenkins, P. Rojo +2
Context: More than 40 planets have been found around giant stars, revealing a lack of systems orbiting interior to 0.6 AU. This observational fact contrasts with the planeta…
Blue not brown: UKIDSS T dwarfs with suppressed K-band flux
D. N. Murray, B. Burningham, H. R. A Jones +13
We have used blue near-infrared colours to select a group of 12 spectroscopically-confirmed UKIDSS T dwarfs later than T4. From amongst these we identify the first two kinematic ha…
NACO-SDI imaging of known companion host stars from the AAPS and Keck planet search surveys
J. S. Jenkins, H. R. A. Jones, B. Biller +8
Direct imaging of brown dwarfs as companions to solar-type stars can provide a wealth of well-constrained data to "benchmark" the physics of such objects, since quantities like met…
Discovery of the first wide L dwarf + giant binary system and eight other ultra-cool dwarfs in wide binaries
Z. H. Zhang, D. J. Pinfield, A. C. Day-Jones +11
We identify 806 ultra-cool dwarfs from their SDSS riz photometry (of which 34 are newly discovered L dwarfs) and obtain proper motions through cross matching with UKIDSS and 2MASS.…
A long-period planet orbiting a nearby Sun-like star
Hugh R. A. Jones, R. Paul Butler, C. G. Tinney +10
The Doppler wobble induced by the extra-solar planet HD 134987b was first detected by data from the Keck Telescope nearly a decade ago, and was subsequently confirmed by data from…