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Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime
J. Davy Kirkpatrick, Emily C. Martin, Richard L. Smart +16
We present preliminary trigonometric parallaxes of 184 late-T and Y dwarfs using observations from Spitzer (143), USNO (18), NTT (14), and UKIRT (9). To complete the 20-pc census o…
A deep survey for symbiotic stars in the Magellanic Clouds - 1. Methodology and first discoveries in the SMC
Krystian Ilkiewicz, Joanna Mikolajewska, Michael M. Shara +3
We have initiated a survey aimed at locating a nearly complete sample of classical symbiotic stars (SySt) in the Magellanic Clouds. Such a sample is nearly impossible to obtain in…
Y dwarf Trigonometric Parallaxes from the Spitzer Space Telescope
Emily C. Martin, J. Davy Kirkpatrick, Charles A. Beichman +12
Y dwarfs provide a unique opportunity to study free-floating objects with masses 30 M and atmospheric temperatures approaching those of known Jupiter-like exoplanets. Ob…
Volans-Carina: A New 90 Myr Old Stellar Association at 85 pc
Jonathan Gagné, Jacqueline K. Faherty, Eric E. Mamajek
We present a characterization of the new Volans-Carina Association (VCA) of stars near the Galactic plane (b ~ -10 deg) at a distance of ~75-100 pc, previously identified as group…
Understanding Fundamental Properties and Atmospheric Features of Subdwarfs via a Case Study of SDSS J125637.13-022452.4
Eileen C. Gonzales, Jacqueline K. Faherty, Jonathan Gagné +2
We present the distance-calibrated spectral energy distribution (SED) of the sdL3.5 subdwarf SDSS J125637.13-022452.4 (J1256-0224) using its Gaia parallax and its resultant bolomet…
A Young Ultramassive White Dwarf in the AB Doradus Moving Group
Jonathan Gagné, Gilles Fontaine, Amélie Simon +1
We use Gaia DR2 kinematic data and white dwarf evolutionary models to determine that the young and ultramassive white dwarf GD 50 is a likely member of the AB Doradus moving group.…