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Spectroscopic Observations of the Galex Nearby Young Star Survey Sample. 1. Nearby Moving Group Candidates
Navya Nagananda, Laura Vican, Ben Zuckerman +3
The GALEX Nearby Young Star Search (GALNYSS) yielded the identification of more than 2000 late-type stars that, based on their ultraviolet and infrared colors and pre-Gaia proper m…
Atmospheric Temperature Inversions and He I 5876 Core Profile Structure in White Dwarfs
Beth Klein, Simon Blouin, Diego Romani +7
We report distinctive core profiles in the strongest optical helium line, He I 5876, from high-resolution high-sensitivity observations of spectral type DB white dwarfs. By analyzi…
Nearby Young, Active, Late-type Dwarfs in Gaia's First Data Release
Joel H. Kastner, Germano Sacco, David Rodriguez +3
The Galex Nearby Young Star Survey (GALNYSS) has yielded a sample of 2000 UV-selected objects that are candidate nearby (150 pc), young (age 10--1…
A Young White Dwarf with an Infrared Excess
S. Xu, M. Jura, B. Pantoja +4
Using observations of Spitzer/IRAC, we report the serendipitous discovery of excess infrared emission from a single white dwarf PG 0010+280. At a temperature of 27,220 K and a cool…
Warm Dusty Debris Disks and Distant Companion Stars: V488 Per and 2M1337
B. Zuckerman
A possible connection between the presence of large quantities of warm (T200 K) circumstellar dust at youthful stars and the existence of wide-separation companion stars has…
Recognition of the First Observational Evidence of an Extrasolar Planetary System
B. Zuckerman
With 20-20 hindsight, it is now possible to say that the first observational indication -- by any means -- of the existence of an extrasolar planetary system came almost a century…