activity
20222026
most citedTESS discovery of two super-Earths orbiting the M-dwarf stars TOI-6002 and TOI-5713 near the radius valley

11 citations · 40 across the 20 of their papers we have counts for

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7 papers · 1 filter

astro-ph.SR2026

The Companions to B and A Stars Snapshot (C-BASS) Survey: I. Discovery of a Young Brown Dwarf Companion to HIP 17453

Marah Brinjikji, Adam J. Smith, Jennifer Patience +26

We report the detection of a new brown dwarf companion to HIP 17453 A, a chemically peculiar A0V star located at a distance of 81 pc. HIP 17453 A was observed with high-resolution…

astro-ph.SR2026

JWST NIRSpec Spectral Standards for M, L, and T Dwarfs and Subdwarfs

Evan Pritchard, Marylin Loritsch, Julia Haynes +3

We present low resolution infrared spectral standards in the 0.76 to 5.0 μm range based on JWST NIRspec Prism data from deep sky surveys. Our standards encompass spectral types M,…

astro-ph.SR2025

High Proper Motion Discoveries from the UKIRT Hemisphere Survey

Wings Zhang, Adam C. Schneider, Thomas P. Bickle +31

We used the third data release of the UKIRT Hemisphere Survey to locate previously unrecognized high proper motion objects. We identify a total of 127 new discoveries with total pr…

astro-ph.SR2024

New Cold Subdwarf Discoveries from Backyard Worlds and a Metallicity Classification System for T Subdwarfs

Adam J. Burgasser, Adam C. Schneider, Aaron M. Meisner +36

We report the results of a spectroscopic survey of candidate T subdwarfs identified by the Backyard Worlds: Planet 9 program. Near-infrared spectra of 31 sources with red co…

astro-ph.SR2024

Discovery of a Hypervelocity L Subdwarf at the Star/Brown Dwarf Mass Limit

Adam J. Burgasser, Roman Gerasimov, Kyle Kremer +18

We report the discovery of a high velocity, very low-mass star or brown dwarf whose kinematics suggest it is unbound to the Milky Way. CWISE J124909.08+362116.0 was identified by c…

astro-ph.SR2024★ 1 cited

89 New Ultracool Dwarf Co-Moving Companions Identified With The Backyard Worlds: Planet 9 Citizen Science Project

Austin Rothermich, Jacqueline K. Faherty, Daniella Bardalez-Gagliuffi +43

We report the identification of 89 new systems containing ultracool dwarf companions to main sequence stars and white dwarfs, using the citizen science project Backyard Worlds: Pla…

astro-ph.SR2022★ 9 cited

CWISE J014611.20-050850.0AB: The Widest Known Brown Dwarf Binary in the Field

Emma Softich, Adam C. Schneider, Jennifer Patience +19

While stars are often found in binary systems, brown dwarf binaries are much rarer. Brown dwarf--brown dwarf pairs are typically difficult to resolve because they often have very s…