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Protoplanetary disk masses in NGC 2024: Evidence for two populations
Sierk E. van Terwisga, Ewine F. van Dishoeck, Rita K. Mann +8
Protoplanetary disks in dense, massive star-forming regions are strongly affected by their environment. How this environmental impact changes over time is an important constraint o…
High Precision Dynamical Masses of Pre-Main Sequence Stars with ALMA and Gaia
Patrick D. Sheehan, Ya-Lin Wu, Josh A. Eisner +1
The Keplerian rotation in protoplanetary disks can be used to robustly measure stellar masses at very high precision if the source distance is known. We present Atacama Large Milli…
The Eccentric Cavity, Triple Rings, Two-Armed Spirals, and Double Clumps of the MWC 758 Disk
Ruobing Dong, Sheng-yuan Liu, Josh Eisner +15
Spatially resolved structures in protoplanetary disks hint at unseen planets. Previous imaging observations of the transitional disk around MWC 758 revealed an inner cavity, a ring…
Protoplanetary Disk Properties in the Orion Nebula Cluster: Initial Results from Deep, High-Resolution ALMA Observations
J. A. Eisner, H. G. Arce, N. P. Ballering +13
We present ALMA 850 m continuum observations of the Orion Nebula Cluster that provide the highest angular resolution ( AU) and deepest sensitivity…
Multiple Gaps in the Disk of the Class I Protostar GY 91
Patrick Sheehan, Josh Eisner
We present the highest spatial resolution ALMA observations to date of the Class I protostar GY 91 in the Ophiuchus L1688 molecular cloud complex. Our 870 m and 3 mm dust co…
Disk Masses for Embedded Class I Protostars in the Taurus Molecular Cloud
Patrick D. Sheehan, Josh A. Eisner
Class I protostars are thought to represent an early stage in the lifetime of protoplanetary disks, when they are still embedded in their natal envelope. Here we measure the disk m…
Improved Constraints on the Disk Around MWC 349A from the 23-Meter LBTI
Steph Sallum, Josh Eisner, Phil Hinz +4
We present new spatially resolved observations of MWC 349A from the Large Binocular Telescope Interferometer (LBTI), a 23-meter baseline interferometer made up of two, co-mounted 8…
WL 17: A Young Embedded Transition Disk
Patrick D. Sheehan, Josh A. Eisner
We present the highest spatial resolution ALMA observations to date of the Class I protostar WL 17 in the Ophiuchus L1688 molecular cloud complex, which show that it has a 12 A…
The ALMA View of the OMC1 Explosion in Orion
John Bally, Adam Ginsburg, Hector Arce +4
Most massive stars form in dense clusters where gravitational interactions with other stars may be common. The two nearest forming massive stars, the BN object and Source I, locate…
L-band Spectroscopy with Magellan-AO/Clio2: First Results on Young Low-Mass Companions
Jordan M. Stone, Josh Eisner, Andy Skemer +6
L-band spectroscopy is a powerful probe of cool low-gravity atmospheres: The P, Q, and R branch fundamental transitions of methane near 3.3 m provide a sensitive probe of carbon…
Protoplanetary Disks in the Orion OMC1 Region Imaged with ALMA
J. A. Eisner, J. M. Bally, A. Ginsburg +1
We present ALMA observations of the Orion Nebula that cover the OMC1 outflow region. Our focus in this paper is on compact emission from protoplanetary disks. We mosaicked a field…
Adaptive Optics imaging of VHS 1256-1257: A Low Mass Companion to a Brown Dwarf Binary System
Jordan M. Stone, Andrew J. Skemer, Kaitlin M. Kratter +9
Recently, Gauza et al. (2015) reported the discovery of a companion to the late M-dwarf, VHS J125601.92-125723.9 (VHS 1256-1257). The companion's absolute photometry suggests its m…
The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate Age, Late-Type Binary NO UMa
Joshua E. Schlieder, Andrew J. Skemer, Anne-Lise Maire +21
We present high-resolution Large Binocular Telescope LBTI/LMIRcam images of the spectroscopic and astrometric binary NO UMa obtained as part of the LBTI Exozodi Exoplanet Common Hu…
Protoplanetary Disk Masses in the Young NGC 2024 Cluster
Rita K. Mann, Sean M. Andrews, Josh A. Eisner +5
We present the results from a Submillimeter Array survey of the 887 micron continuum emission from the protoplanetary disks around 95 young stars in the young cluster NGC 2024. Emi…
A Machine Learning Method to Infer Fundamental Stellar Parameters from Photometric Light Curves
A. A. Miller, J. S. Bloom, J. W. Richards +6
A fundamental challenge for wide-field imaging surveys is obtaining follow-up spectroscopic observations: there are > photometrically cataloged sources, yet modern spectrosc…
Variable Accretion Processes in the Young Binary-Star System UY Aur
Jordan M. Stone, J. A. Eisner, Colette Salyk +2
We present new K-band spectroscopy of the UY Aur binary star system. Our data are the first to show H emission in the spectrum of UY Aur A and the first to spectrally resolve…
Constraining the Disk Masses of the Class I Binary Protostar GV Tau
Patrick Sheehan, Josh Eisner
We present new spatially resolved 1.3 mm imaging with CARMA of the GV Tau system. GV Tau is a Class I binary protostar system in the Taurus Molecular Cloud, the components of which…
The Ionized Circumstellar Envelopes of Orion Source I and the Becklin Neugebauer Object
R. L. Plambeck, A. D. Bolatto, J. M. Carpenter +12
The 229 GHz (lambda 1.3mm) radio emission from Orion-KL was mapped with up to 0.14" angular resolution with CARMA, allowing measurements of the flux densities of Source I ('SrcI')…
The Gray Needle: Large Grains in the HD 15115 Debris Disk from LBT/PISCES/Ks and LBTI/LMIRcam/L' Adaptive Optics Imaging
Timothy J. Rodigas, Philip M. Hinz, Jarron Leisenring +52
We present diffraction-limited \ks band and \lprime adaptive optics images of the edge-on debris disk around the nearby F2 star HD 15115, obtained with a single 8.4 m primary mirro…
Probing local density inhomogeneities in the circumstellar disk of a Be star using the new spectro-astrometry mode at the Keck interferometer
J. -U. Pott, J. Woillez, S. Ragland +23
We report on the successful science verification phase of a new observing mode at the Keck interferometer, which provides a line-spread function width and sampling of 150km/s at K'…