252 citations · 659 across the 12 of their papers we have counts for
11 papers · 1 filter
HD 76920b pinned down: a detailed analysis of the most eccentric planetary system around an evolved star
C. Bergmann, M. I. Jones, J. Zhao +9
We present 63 new multi-site radial velocity measurements of the K1III giant HD 76920, which was recently reported to host the most eccentric planet known to orbit an evolved star.…
Cluster Difference Imaging Photometric Survey. II. TOI 837: A Young Validated Planet in IC 2602
L. G. Bouma, J. D. Hartman, R. Brahm +42
We report the discovery of TOI 837b and its validation as a transiting planet. We characterize the system using data from the NASA TESS mission, the ESA Gaia mission, ground-based…
Truly eccentric. II. When can two circular planets mimic a single eccentric orbit?
Robert A. Wittenmyer, Christoph Bergmann, Jonathan Horner +2
When, in the course of searching for exoplanets, sparse sampling and noisy data make it necessary to disentangle possible solutions to the observations, one must consider the possi…
A Hot Saturn Orbiting An Oscillating Late Subgiant Discovered by TESS
Daniel Huber, William J. Chaplin, Ashley Chontos +139
We present the discovery of TOI-197.01, the first transiting planet identified by the Transiting Exoplanet Survey Satellite (TESS) for which asteroseismology of the host star is po…
The conjectured S-type retrograde planet in nu Octantis: more evidence including four years of iodine-cell radial velocities
D. J. Ramm, B. E. Nelson, M. Endl +6
We report 1212 radial-velocity (RV) measurements obtained in the years 2009-2013 using an iodine cell for the spectroscopic binary nu Octantis (K1III/IV). This system (a_bin~2.6 au…
The Pan-Pacific Planet Search III: Five companions orbiting giant stars
R. A. Wittenmyer, R. P. Butler, L. Wang +4
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 surve…
Precise Radial Velocities of Giant Stars VII. Occurrence Rate of Giant Extrasolar Planets as a Function of Mass and Metallicity
Sabine Reffert, Christoph Bergmann, Andreas Quirrenbach +2
(abridged) We have obtained precise radial velocities for a sample of 373 G and K type giants at Lick Observatory regularly over more than 12 years. Planets have been identified ar…
Searching for Earth-mass planets around Centauri: precise radial velocities from contaminated spectra
Christoph Bergmann, Michael Endl, John B. Hearnshaw +2
This work is part of an ongoing project which aims to detect terrestrial planets in our neighbouring star system Centauri using the Doppler method. Owing to the small angular s…
The Mt John University Observatory Search For Earth-mass Planets In The Habitable Zone Of Alpha Centauri
M. Endl, C. Bergmann, J. Hearnshaw +6
The "holy grail" in planet hunting is the detection of an Earth-analog: a planet with similar mass as the Earth and an orbit inside the habitable zone. If we can find such an Earth…
Planets around Giant Stars
A. Quirrenbach, S. Reffert, C. Bergmann
We present results from a radial-velocity survey of 373 giant stars at Lick Observatory, which started in 1999. The previously announced planets iota Dra b and Pollux b are confirm…
On the Transit Potential of the Planet Orbiting iota Draconis
Stephen R. Kane, Sabine Reffert, Gregory W. Henry +4
Most of the known transiting exoplanets are in short-period orbits, largely due to the bias inherent in detecting planets through the transit technique. However, the eccentricity d…