302 citations · 2.8k across the 58 of their papers we have counts for
17 papers · 1 filter
Constraining free-free emission and photoevaporative mass loss rates for known proplyds and new VLA-identified candidate proplyds in NGC 1977
Ryan D. Boyden, Josh A. Eisner
We present Karl G. Jansky Very Large Array observations covering the NGC 1977 region at 3.0, 6.4, and 15.0 GHz. We search for compact radio sources and detect continuum emission fr…
Isolating Dust and Free-Free Emission in ONC Proplyds with ALMA Band 3 Observations
Nicholas P. Ballering, L. Ilsedore Cleeves, Thomas J. Haworth +6
The Orion Nebula Cluster (ONC) hosts protoplanetary disks experiencing external photoevaporation by the cluster's intense UV field. These ``proplyds" are comprised of a disk surrou…
Systematic Multi-Epoch Monitoring of LkCa 15: Dynamic Dust Structures on Solar-System Scales
Steph Sallum, Josh Eisner, Andy Skemer +1
We present the highest angular resolution infrared monitoring of LkCa 15, a young solar analog hosting a transition disk. This system has been the subject of a number of direct ima…
Chemical modeling of Orion Nebula Cluster disks: evidence for massive, compact gas disks with ISM-like gas-to-dust ratios
Ryan D. Boyden, Josh A. Eisner
The stellar cluster environment is expected to play a central role in the evolution of circumstellar disks. We use thermochemical modeling to constrain the dust and gas masses, dis…
ALMA Discovery of a Disk around the Planetary-mass Companion SR 12 c
Ya-Lin Wu, Brendan P. Bowler, Patrick D. Sheehan +6
We report an Atacama Large Millimeter/submillimeter Array 0.88 mm (Band 7) continuum detection of the accretion disk around SR 12 c, an 11 planetary-mass compan…
LBT search for companions and sub-structures in the (pre)transitional disk of AB Aurigae
Sebastián Jorquera, Mickaël Bonnefoy, Sarah Betti +18
Multi-wavelengths high-resolution imaging of protoplanetary disks has revealed the presence of multiple, varied substructures in their dust and gas components which might be signpo…
Protoplanetary Disks in the Orion Nebula Cluster: Gas Disk Morphologies and Kinematics as seen with ALMA
Ryan D. Boyden, Josh A. Eisner
We present Atacama Large Millimeter Array CO(32) and HCO(43) observations covering the central region of the Orion Nebula Cluster (ONC)…
Dusty disk winds at the sublimation rim of the highly inclined, low mass YSO SU Aurigae
Aaron Labdon, Stefan Kraus, Claire L Davies +11
T Tauri stars are low-mass young stars whose disks provide the setting for planet formation. Despite this, their structure is poorly understood. We present new infrared interferome…
Protoplanetary Disk Masses from Radiative Transfer Modeling: A Case Study in Taurus
Nicholas P. Ballering, Josh A. Eisner
Measuring the masses of protoplanetary disks is crucial for understanding their planet-forming potential. Typically, dust masses are derived from (sub-)millimeter flux density meas…
An Explanation of the Very Low Radio Flux of Young Planet-mass Companions
Ya-Lin Wu, Laird M. Close, Josh A. Eisner +1
We report Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm continuum upper limits for 5 planetary-mass companions DH Tau B, CT Cha B, GSC 6214-210 B, 1RXS 1609 B, and GQ…
Imaging protoplanets: observing transition disks with non-redundant masking
Steph Sallum, Josh Eisner, Laird M. Close +17
Transition disks, protoplanetary disks with inner clearings, are promising objects in which to directly image forming planets. The high contrast imaging technique of non-redundant…
Prompt planetesimal formation beyond the snow line
Philip J. Armitage, Josh A. Eisner, Jacob B. Simon
We develop a simple model to predict the radial distribution of planetesimal formation. The model is based on the observed growth of dust to mm-sized particles, which drift radiall…
The LEECH Exoplanet Imaging Survey: Characterization of the Coldest Directly Imaged Exoplanet, GJ 504 b, and Evidence for Super-Stellar Metallicity
Andrew J. Skemer, Caroline V. Morley, Neil T. Zimmerman +39
As gas giant planets and brown dwarfs radiate away the residual heat from their formation, they cool through a spectral type transition from L to T, which encompasses the dissipati…
Accreting Protoplanets in the LkCa 15 Transition Disk
S. Sallum, K. B. Follette, J. A. Eisner +14
Exoplanet detections have revolutionized astronomy, offering new insights into solar system architecture and planet demographics. While nearly 1900 exoplanets have now been discove…
Spectral Energy Distributions of Accreting Protoplanets
J. A. Eisner
Planets are often invoked as the cause of inferred gaps or inner clearings in transition disks. These putative planets would interact with the remnant circumstellar disk, accreting…
LEECH: A 100 Night Exoplanet Imaging Survey at the LBT
Andrew Skemer, Daniel Apai, Vanessa Bailey +29
In February 2013, the LEECH (LBTI Exozodi Exoplanet Common Hunt) survey began its 100-night campaign from the Large Binocular Telescope atop Mount Graham in Arizona. LEECH nearly c…
First Light LBT AO Images of HR 8799 bcde at 1.65 and 3.3 Microns: New Discrepancies between Young Planets and Old Brown Dwarfs
Andrew J. Skemer, Philip M. Hinz, Simone Esposito +45
As the only directly imaged multiple planet system, HR 8799 provides a unique opportunity to study the physical properties of several planets in parallel. In this paper, we image a…