activity
20022025
most citedThe UKIRT Infrared Deep Sky Survey Early Data Release

221 citations · 6.3k across the 135 of their papers we have counts for

collaborators

134 papers

astro-ph.SR2025★ 1 cited

Benchmark brown dwarfs -- I. A blue M2 + T5 wide binary and a probable young [M4 + M4] + [T7 + T8] hierarchical quadruple

Z. H. Zhang, F. Navarete, M. C. Galvez-Ortiz +13

Benchmark brown dwarfs in wide binary systems are crucial for characterizing substellar objects and calibrating atmospheric and evolutionary models. However, brown dwarf benchmarks…

astro-ph.SR2025

The Gaia Ultracool Dwarf Sample -- VI. Spectral Types and Properties of 51 Ultracool Dwarfs

Gemma Cheng, H. R. A. Jones, R. L. Smart +7

Near-infrared spectra from the IRTF/SpeX and Blanco/ARCoIRIS telescope/instrument combinations are used for spectroscopic classification, to measure radial velocities and for the i…

astro-ph.SR2024★ 1 cited

The Gaia Ultracool Dwarf Sample -- IV. GTC/OSIRIS optical spectra of Gaia late-M and L dwarfs

W. J. Cooper, H. R. A. Jones, R. L. Smart +20

As part of our comprehensive, ongoing characterisation of the low-mass end of the main sequence in the Solar neighbourhood, we used the OSIRIS instrument at the 10.4 m Gran Telesco…

astro-ph.SR2024★ 7 cited

Primeval very low-mass stars and brown dwarfs -- VIII. The first age benchmark L subdwarf, a wide companion to a halo white dwarf

Z. H. Zhang, R. Raddi, A. J. Burgasser +12

We report the discovery of five white dwarf + ultracool dwarf systems identified as common proper motion wide binaries in the Gaia Catalogue of Nearby Stars. The discoveries includ…

astro-ph.SR2024

The Gaia Ultracool Dwarf Sample -- V: The Ultracool Dwarf Companion catalogue

Sayan Baig, R. L. Smart, Hugh R. A. Jones +4

We present the Ultracool Dwarf Companion Catalogue of 278 multiple systems, 32 of which are newly discovered, each with at least one spectroscopically confirmed Ultracool Dwarf, wi…

astro-ph.SR2023★ 43 cited

A blue depression in the optical spectra of M dwarfs

Hugh R. A. Jones, Yakiv Pavlenko, Yuri Lyubchik +3

A blue depression is found in the spectra of M dwarfs from 4000 to 4500A. This depression shows an increase toward lower temperatures though is particularly sensitive to gravity an…