183 citations · 978 across the 24 of their papers we have counts for
24 papers
A New Sirius-like System at Only 21 Parsecs: An Elusive White Dwarf Companion to the Nearby K-dwarf HD 38230
Alexander Venner, Logan A. Pearce, Qier An +6
White dwarfs are among the rarest and faintest stars found in the solar neighbourhood and are therefore persistently challenging to detect. Whereas the \textit{Gaia} mission has va…
Aerosols and hydrocarbons in the atmosphere of a white dwarf planet
Ryan J. MacDonald, Christopher E. O'Connor, Victoria A. Boehm +15
Most stars, including our Sun, will one day evolve into red giants and, subsequently, white dwarfs. Several planet candidates have recently been identified orbiting white dwarfs, d…
On The Detection of Digiorno-like Objects in the Flavor Zone
Logan A. Pearce, Sue D'Oh Nym
Aims: This work proposes a new SETI search methodology under the assumption that a sufficiently advanced civilization could skip the middle man of converting starlight to energy to…
Wide Binary Orbits are Preferentially Aligned with the Orbits of Small Planets, but Probably Not Hot Jupiters
Sam Christian, Andrew Vanderburg, Juliette Becker +28
Studying the relative orientations of the orbits of exoplanets and wide-orbiting binary companions (semimajor axis greater than 100 AU) can shed light on how planets form and evolv…
MagAO-X and HST high-contrast imaging of the AS209 disk at H
Gabriele Cugno, Yifan Zhou, Thanawuth Thanathibodee +22
The detection of emission lines associated with accretion processes is a direct method for studying how and where gas giant planets form, how young planets interact with their nata…
HIP 67506 C: MagAO-X Confirmation of a New Low-Mass Stellar Companion to HIP 67506 A
Logan A. Pearce, Jared R. Males, Sebastiaan Y. Haffert +17
We report the confirmation of HIP 67506 C, a new stellar companion to HIP 67506 A. We previously reported a candidate signal at 2/D (240~mas) in L in MagAO/Clio imagi…
Improved companion mass limits for Sirius A with thermal infrared coronagraphy using a vector-apodizing phase plate and time-domain starlight-subtraction techniques
Joseph D. Long, Jared R. Males, Sebastiaan Y. Haffert +12
We use observations with the infrared-optimized MagAO system and Clio camera in 3.9 m light to place stringent mass constraints on possible undetected companions to Sirius A. We…
MagAO-X: current status and plans for Phase II
Jared R. Males, Laird M. Close, Sebastiaan Haffert +15
We present a status update for MagAO-X, a 2000 actuator, 3.6 kHz adaptive optics and coronagraph system for the Magellan Clay 6.5 m telescope. MagAO-X is optimized for high contras…
On the Masses, Age, and Architecture of the VHS J1256-1257AB b System
Trent J. Dupuy, Michael C. Liu, Elise L. Evans +5
VHS J12561257 AB is an ultracool dwarf binary that hosts a wide-separation planetary-mass companion that is a key target of the {\sl JWST} Exoplanet Early Release Science (ERS)…
Companion Mass Limits for 17 Binary Systems Obtained with Binary Differential Imaging and MagAO/Clio
Logan A. Pearce, Jared R. Males, Alycia J. Weinberger +4
Improving direct detection capability close to the star through improved star-subtraction and post-processing techniques is vital for discovering new low-mass companions and charac…
A Possible Alignment Between the Orbits of Planetary Systems and their Visual Binary Companions
Sam Christian, Andrew Vanderburg, Juliette Becker +111
Astronomers do not have a complete picture of the effects of wide-binary companions (semimajor axes greater than 100 AU) on the formation and evolution of exoplanets. We investigat…
An Edge-On Orbit for the Eccentric Long-Period Planet HR 5183 b
Alexander Venner, Logan A. Pearce, Andrew Vanderburg
The long-period giant planet HR 5183 b has one of the most extreme orbits among exoplanets known to date, and represents a test for models of their dynamical evolution. In this wor…
True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
Alexander Venner, Andrew Vanderburg, Logan A. Pearce
The extensive timespan of modern radial velocity surveys has made the discovery of long-period substellar companions more common in recent years, however measuring the true masses…
The Breakthrough Listen Search for Intelligent Life: MeerKAT Target Selection
Daniel Czech, Howard Isaacson, Logan Pearce +18
New radio telescope arrays offer unique opportunities for large-scale commensal SETI surveys. Ethernet-based architectures are allowing multiple users to access telescope data simu…
TESS Hunt for Young and Maturing Exoplanets (THYME) IV: Three small planets orbiting a 120 Myr-old star in the Pisces--Eridanus stream
Elisabeth R. Newton, Andrew W. Mann, Adam L. Kraus +50
Young exoplanets can offer insight into the evolution of planetary atmospheres, compositions, and architectures. We present the discovery of the young planetary system TOI 451 (TIC…
Boyajian's Star B: The co-moving stellar companion to KIC 8462852
Logan A. Pearce, Adam L. Kraus, Trent J. Dupuy +2
The light curve of KIC 8462852, a.k.a Boyajian's Star, undergoes deep dips the origin of which remains unclear. A faint star 2\arcsec to the east was discovered in Keck/NI…
A Giant Planet Candidate Transiting a White Dwarf
Andrew Vanderburg, Saul A. Rappaport, Siyi Xu +61
Astronomers have discovered thousands of planets outside the solar system, most of which orbit stars that will eventually evolve into red giants and then into white dwarfs. During…
Orbital Parameter Determination for Wide Stellar Binary Systems in the Age of Gaia
Logan A. Pearce, Adam L. Kraus, Trent J. Dupuy +4
The orbits of binary stars and planets, particularly eccentricities and inclinations, encode the angular momentum within these systems. Within stellar multiple systems, the magnitu…
Three Short Period Jupiters from TESS
L. D. Nielsen, R. Brahm, F. Bouchy +74
We report the confirmation and mass determination of three hot Jupiters discovered by the Transiting Exoplanet Survey Satellite (TESS) mission: HIP 65Ab (TOI-129, TIC-201248411) is…
orbitize!: A Comprehensive Orbit-fitting Software Package for the High-contrast Imaging Community
Sarah Blunt, Jason Wang, Isabel Angelo +10
orbitize! is an open-source, object-oriented software package for fitting the orbits of directly-imaged objects. It packages the Orbits for the Impatient (OFTI) algorithm and a par…
An 11 Earth-Mass, Long-Period Sub-Neptune Orbiting a Sun-like Star
Andrew W. Mayo, Vinesh M. Rajpaul, Lars A. Buchhave +27
Although several thousands of exoplanets have now been detected and characterized, observational biases have led to a paucity of long-period, low-mass exoplanets with measured mass…
TESS Hunt for Young and Maturing Exoplanets (THYME): A planet in the 45 Myr Tucana-Horologium association
Elisabeth R. Newton, Andrew W. Mann, Benjamin M. Tofflemire +49
Young exoplanets are snapshots of the planetary evolution process. Planets that orbit stars in young associations are particularly important because the age of the planetary system…
TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858
Andrew Vanderburg, Chelsea X. Huang, Joseph E. Rodriguez +48
Transiting Exoplanet Survey Satellite (TESS) observations have revealed a compact multi-planet system around the sixth-magnitude star HR 858 (TIC 178155732, TOI 396), located 32 pa…
Orbital Motion of the Wide Planetary-Mass Companion GSC 6214-210 b: No Evidence for Dynamical Scattering
Logan A. Pearce, Adam L. Kraus, Trent J. Dupuy +5
Direct-imaging exoplanet surveys have discovered a class of 5-20 \Mjup\space substellar companions at separations >100 AU from their host stars, which present a challenge to planet…