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40 papers · 1 filter
DRAGraces: A pipeline for the GRACES high-resolution spectrograph at Gemini
André-Nicolas Chené, Shunyuan Mao, Michael Lundquist +2
This paper describes the software DRAGraces (Data Reduction and Analysis for GRACES), which is a pipeline reducing spectra from GRACES (Gemini Remote Access to the CFHT ESPaDOnS Sp…
Short-term variability and mass loss in Be stars VI. Frequency groups in Cas detected by TESS
Jonathan Labadie-Bartz, Dietrich Baade, Alex C. Carciofi +5
In photometry of Cas (B0.5 IVe) from the SMEI and BRITE-Constellation satellites, indications of low-order non-radial pulsation have recently been found, which would establish…
The Fundamental Plane of Massive Quiescent Galaxies at z~2
Mikkel Stockmann, Inger Jørgensen, Sune Toft +11
We examine the Fundamental Plane (FP) and mass-to-light ratio () scaling relations using the largest sample of massive quiescent galaxies at to date. The FP ($r_{e…
The McDonald Accelerating Stars Survey (MASS): White Dwarf Companions Accelerating the Sun-like Stars 12 Psc and HD 159062
Brendan P. Bowler, William D. Cochran, Michael Endl +7
We present the discovery of a white dwarf companion to the G1 V star 12 Psc found as part of a Keck adaptive optics imaging survey of long-term accelerating stars from the McDonald…
Speckle Imaging Characterization of Radial Velocity Exoplanet Systems
Paul A. Dalba, Stephen R. Kane, Steve B. Howell +10
We conducted speckle imaging observations of 53 stellar systems that were members of long-term radial velocity (RV) monitoring campaigns and exhibited substantial accelerations ind…
A Volume-Limited Sample of Ultracool Dwarfs. I. Construction, Space Density, and a Gap in the L/T Transition
William M. J. Best, Michael C. Liu, Eugene A. Magnier +1
We present a new volume-limited sample of L0-T8 dwarfs out to 25 pc defined entirely by parallaxes, using our recent measurements from UKIRT/WFCAM along with Gaia DR2 and literatur…