95 citations · 710 across the 30 of their papers we have counts for
30 papers
Dynamical Tides during High-Eccentricity Migration produces the Hot Jupiter Pile-up, Neptune Ridge, and Neptune Desert
J. J. Zanazzi, Morgan MacLeod, Marta L. Bryan +1
The period distribution of hot gaseous exoplanets depends strongly on mass. Clustering between the orbital periods of 3 to 5-6 days is seen for sub-Saturns ("Neptune ri…
Seismic Oscillations Excited by Giant Impacts in Directly-Imaged Giant Planets
J. J. Zanazzi, Eugene Chiang, Yifan Zhou
The radii and masses of many giant exoplanets imply their interiors each contain more than 100 of solids. A large metal content may arise when a giant planet grows…
Concealing Circumbinary Planets with Tidal Shrinkage
Saahit Mogan, J. J. Zanazzi
Of the 14 transiting planets that have been detected orbiting eclipsing binaries ('circumbinary planets'), none have been detected with stellar binary orbital periods shorter than…
Spin and Obliquity Evolution of Hot Jupiter Hosts from Resonance Locks
J. J. Zanazzi, Eugene Chiang
When a hot Jupiter orbits a star whose effective temperature exceeds 6100 K, its orbit normal tends to be misaligned with the stellar spin axis. Cooler stars typically have s…
Obliquities of Exoplanet Host Stars: 19 New and Updated Measurements, and Trends in the Sample of 205 Measurements
Emil Knudstrup, Simon H. Albrecht, Joshua N. Winn +17
Measurements of the obliquities in exoplanet systems have revealed some remarkable architectures, some of which are very different from the Solar System. Nearly 200 obliquity measu…
Aligning Planet-Hosting Binaries via Dissipative Precession in Circumstellar Disks
Konstantin Gerbig, Malena Rice, J. J. Zanazzi +2
Recent observations have demonstrated that some subset of even moderately wide-separation planet-hosting binaries are preferentially configured such that planetary and binary orbit…
The OATMEAL Survey. I. Low Stellar Obliquity in the Transiting Brown Dwarf System GPX-1
Steven Giacalone, Fei Dai, J. J. Zanazzi +31
We introduce the OATMEAL survey, an effort to measure the obliquities of stars with transiting brown dwarf companions. We observed a transit of the close-in ($P_{\rm orb} = 1.74 \,…
Damping Obliquities of Hot Jupiter Hosts by Resonance Locking
J. J. Zanazzi, Janosz Dewberry, Eugene Chiang
When orbiting hotter stars, hot Jupiters are often highly inclined relative to their host star equator planes. By contrast, hot Jupiters orbiting cooler stars are more aligned. Pri…
Sites of Planet Formation in Binary Systems. I. Evidence for Disk-Orbit Alignment in the Close Binary FO Tau
Benjamin M. Tofflemire, Lisa Prato, Adam L. Kraus +8
Close binary systems present challenges to planet formation. As binary separations decrease, so too do the occurrence rates of protoplanetary disks in young systems and planets in…
Detection of atmospheric species and dynamics in the bloated hot Jupiter WASP-172~b with ESPRESSO
J. V. Seidel, B. Prinoth, E. Knudstrup +3
The population of strongly irradiated Jupiter-sized planets has no equivalent in the Solar System. It is characterised by strongly bloated atmospheres and atmospheric large-scale h…
Sweeping Secular Resonances and Giant Planet Inclinations in Transition Discs
J. J. Zanazzi, Eugene Chiang
The orbits of some warm Jupiters are highly inclined (20-50) to those of their exterior companions. Comparable misalignments are inferred between the outer and inne…
Two Candidate KH 15D-like Systems from the Zwicky Transient Facility
Wei Zhu, Klaus Bernhard, Fei Dai +8
KH 15D contains a circumbinary disk that is tilted relative to the orbital plane of the central binary. The precession of the disk and the orbital motion of the binary together pro…
A Tale of Two Circularization Periods
J. J. Zanazzi
We re-analyze the pristine eclipsing binary data from the and TESS missions, focusing on eccentricity measurements at short orbital periods to emperically constra…
On the equations of warped disc dynamics
C. P. Dullemond, C. N. Kimmig, J. J. Zanazzi
The 1-D evolution equations for warped discs come in two flavors: For very viscous discs the internal torque vector G is uniquely determined by the local conditions in the disc, an…
Detection and Bulk Properties of the HR 8799 Planets with High Resolution Spectroscopy
Jason J. Wang, Jean-Baptiste Ruffio, Evan Morris +49
Using the Keck Planet Imager and Characterizer (KPIC), we obtained high-resolution (R35,000) -band spectra of the four planets orbiting HR 8799. We clearly detected \water…
A backward-spinning star with two coplanar planets
Maria Hjorth, Simon Albrecht, Teruyuki Hirano +5
It is widely assumed that a star and its protoplanetary disk are initially aligned, with the stellar equator parallel to the disk plane. When observations reveal a misalignment bet…
Tidal Circularization of Binaries by Resonance Locking I: The Importance of the Pre-Main-Sequence
J. J. Zanazzi, Yanqin Wu
Although tidal dissipation in binary stars has been studied for over a century, theoretical predictions have yet to match the observed properties of binary populations. This work q…
Emission Properties of Periodic Fast Radio Bursts from the Motion of Magnetars: Testing Dynamical Models
Dongzi Li, J. J. Zanazzi
Recent observations of the periodic Fast Radio Burst source 180916.J0158+65 (FRB 180916) find small linear polarization position angle swings during and between bursts, with a burs…
Constraining the Circumbinary Disk Tilt in the KH 15D system
Michael Poon, J. J. Zanazzi, Wei Zhu
KH 15D is a system which consists of a young, eccentric binary, and a circumbinary disk which obscures the binary as the disk precesses. We develop a self-consistent model that pro…
Eccentric Tidal Disruption Event Disks around Supermassive Black Holes: Dynamics and Thermal Emission
J. J. Zanazzi, Gordon I. Ogilvie
After the Tidal Disruption Event (TDE) of a star around a SuperMassive Black Hole (SMBH), if the stellar debris stream rapidly circularizes and forms a compact disk, the TDE emissi…
Periodic Fast Radio Bursts with Neutron Star Free/Radiative Precession
J. J. Zanazzi, Dong Lai
The CHIME/FRB collaboration recently reported the detection of a 16 day periodicity in the arrival times of radio bursts from FRB 180916.J0158+65. We study the possibility that the…
The Structure and Stability of Extended, Inclined Circumplanetary Disk or Ring Systems
Jessica Speedie, J. J. Zanazzi
Large dips in the brightness for a number of stars have been observed, for which the tentative explanation is occultation of the star by a transiting circumplanetary disk or ring s…
Tidal Disruption Event Disks around Supermassive Black Holes: Disk Warp and Inclination Evolution
J. J. Zanazzi, Dong Lai
After the Tidal Disruption Event (TDE) of a star around a SuperMassive Black Hole (SMBH), the bound stellar debris rapidly forms an accretion disk. If the accretion disk is not ali…
The Ability of Significant Tidal Stress to Initiate Plate Tectonics
J. J. Zanazzi, Amaury H. M. J. Triaud
Plate tectonics is a geophysical process currently unique to Earth, has an important role in regulating the Earth's climate, and may be better understood by identifying rocky plane…