476 citations · 6.2k across the 99 of their papers we have counts for
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CD-27 11535: Evidence for a Triple System in the Pictoris Moving Group
Andrew D. Thomas, Eric L. Nielsen, Robert J. De Rosa +20
We present new spatially resolved astrometry and photometry of the CD-27 11535 system, a member of the Pictoris moving group consisting of two resolved K-type stars on a …
Molecules with ALMA at Planet-forming Scales (MAPS) XIII: HCO and disk ionization structure
Yuri Aikawa, Gianni Cataldi, Yoshihide Yamato +25
We observed HCO and HCO emission towards the five protoplanetary disks around IM Lup, GM Aur, AS 209, HD 163296, and MWC 480 as part of the MAPS proj…
Molecules with ALMA at Planet-forming Scales (MAPS) XI: CN and HCN as Tracers of Photochemistry in Disks
Jennifer B. Bergner, Karin I. Oberg, Viviana V. Guzman +23
UV photochemistry in the surface layers of protoplanetary disks dramatically alters their composition relative to previous stages of star formation. The abundance ratio CN/HCN has…
Molecules with ALMA at Planet-forming Scales (MAPS). X. Studying deuteration at high angular resolution toward protoplanetary disks
Gianni Cataldi, Yoshihide Yamato, Yuri Aikawa +26
Deuterium fractionation is dependent on various physical and chemical parameters. Thus, the formation location and thermal history of material in the solar system is often studied…
Dynamical Masses and Stellar Evolutionary Model Predictions of M-Stars
Jamila Pegues, Ian Czekala, Sean M. Andrews +9
In this era of Gaia and ALMA, dynamical stellar mass measurements provide benchmarks that are independent of observations of stellar characteristics and their uncertainties. These…
An unbiased ALMA spectral survey of the LkCa 15 and MWC 480 protoplanetary disks
Ryan A. Loomis, Karin I. Öberg, Sean M. Andrews +13
The volatile contents of protoplanetary disks both set the potential for planetary chemistry and provide valuable probes of defining disk system characteristics such as stellar mas…
BAFFLES: Bayesian Ages for Field Lower-Mass Stars
S Adam Stanford-Moore, Eric L. Nielsen, Robert J. De Rosa +2
Age is a fundamental parameter of stars, yet in many cases ages of individual stars are presented without robust estimates of the uncertainty. We have developed a Bayesian framewor…
Weighing stars from birth to death: mass determination methods across the HRD
Aldo Serenelli, Achim Weiss, Conny Aerts +31
The mass of a star is the most fundamental parameter for its structure, evolution, and final fate. It is particularly important for any kind of stellar archaeology and characteriza…
The Gemini Planet Imager view of the HD 32297 debris disk
Gaspard Duchene, Malena Rice, Justin Hom +60
We present new -band scattered light images of the HD 32297 edge-on debris disk obtained with the Gemini Planet Imager (GPI). The disk is detected in total and polarized intensi…
Disentangling Time Series Spectra with Gaussian Processes: Applications to Radial Velocity Analysis
Ian Czekala, Kaisey S. Mandel, Sean M. Andrews +4
Measurements of radial velocity variations from the spectroscopic monitoring of stars and their companions are essential for a broad swath of astrophysics, providing access to the…
Placing the spotted T Tauri star LkCa 4 on an HR diagram
Michael A. Gully-Santiago, Gregory J. Herczeg, Ian Czekala +12
Ages and masses of young stars are often estimated by comparing their luminosities and effective temperatures to pre-main sequence stellar evolution tracks, but magnetic fields and…
ALMA Measurements of Circumstellar Material in the GQ Lup System
Meredith A. MacGregor, David J. Wilner, Ian Czekala +7
We present ALMA observations of the GQ Lup system, a young Sun-like star with a substellar mass companion in a wide-separation orbit. These observations of 870 m continuum and C…
The Coupled Physical Structure of Gas and Dust in the IM Lup Protoplanetary Disk
L. Ilsedore Cleeves, Karin I. Öberg, David J. Wilner +4
The spatial distribution of gas and solids in protoplanetary disks determines the composition and formation efficiency of planetary systems. A number of disks show starkly differen…
The Intermediate Luminosity Optical Transient SN 2010da: The Progenitor, Eruption and Aftermath of a Peculiar Supergiant High-mass X-ray Binary
V. Ashley Villar, Edo Berger, Ryan Chornock +7
We present optical spectroscopy, ultraviolet to infrared imaging and X-ray observations of the intermediate luminosity optical transient (ILOT) SN 2010da in NGC 300 (d=1.86 Mpc) sp…
A Disk-based Dynamical Constraint on the Mass of the Young Binary DQ Tau
Ian Czekala, S. M. Andrews, G. Torres +4
We present new ALMA observations of CO =21 line emission from the DQ Tau circumbinary disk. These data are used to tomographically reconstruct the Keplerian disk velocity fie…
A Disk-based Dynamical Mass Estimate for the Young Binary AK Sco
Ian Czekala, Sean M. Andrews, Eric L. N. Jensen +3
We present spatially and spectrally resolved Atacama Large Millimeter/submillimeter Array (ALMA) observations of gas and dust in the disk orbiting the pre-main sequence binary AK S…
Constructing A Flexible Likelihood Function For Spectroscopic Inference
Ian Czekala, Sean M. Andrews, Kaisey S. Mandel +2
We present a modular, extensible likelihood framework for spectroscopic inference based on synthetic model spectra. The subtraction of an imperfect model from a continuously sample…
Truncated Disks in TW Hya Association Multiple Star Systems
Sean M. Andrews, Ian Czekala, D. J. Wilner +3
We present high angular resolution (down to 0.3" = 13 AU in diameter) Submillimeter Array observations of the 880 micron (340 GHz) thermal continuum emission from circumstellar dus…