activity
20012026
most citedSimultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs. III. X-ray, Radio, and H-alpha Activity Trends in M and L Dwarfs

155 citations · 1.3k across the 33 of their papers we have counts for

collaborators

32 papers

astro-ph.SR2026

Detection of circumstellar disks around nearby young brown dwarf candidates

N. Phan-Bao, M. S. Bessell, E. L. Martín

It is important to detect and study circumstellar disks around late-M and brown dwarfs of nearby young associations to understand how these very low-mass objects form and how rocky…

astro-ph.SR2025★ 1 cited

Euclid: Quick Data Release (Q1) -- A photometric search for ultracool dwarfs in the Euclid Deep Fields

M. Žerjal, C. Dominguez-Tagle, N. Vitas +178

We present a catalogue of 5306 new ultracool dwarf (UCD) candidates in the three Euclid Deep Fields in the Q1 data release. They range from late M to late T dwarfs, and include 120…

astro-ph.SR2025★ 9 cited

Euclid Quick Data Release (Q1) -- Spectroscopic search, classification and analysis of ultracool dwarfs in the Deep Fields

C. Dominguez-Tagle, M. Žerjal, N. Sedighi +14

The Near-Infrared Spectrometer and Photometer onboard the Euclid space mission has obtained near-infrared (NIR) slitless spectra of millions of objects, including hundreds of ultra…

astro-ph.EP2024★ 17 cited

Euclid: Early Release Observations -- A glance at free-floating new-born planets in the sigma Orionis cluster

E. L. Martín, M. {Ž}erjal, H. Bouy +175

We provide an early assessment of the imaging capabilities of the Euclid space mission to probe deeply into nearby star-forming regions and associated very young open clusters, and…

astro-ph.SR2020★ 7 cited

Sporadic and intense accretion in a 1 Myr-old brown dwarf candidate

D. Nguyen-Thanh, N. Phan-Bao, S. J. Murphy +1

Studying the accretion process in very low-mass objects has important implications for understanding their formation mechanism. Many nearby late-M dwarfs that have previously been…

astro-ph.GA2017

Two class I very low-mass objects in Taurus

C. Dang-Duc, N. Phan-Bao

We report our study of two proto-brown dwarf candidates in Taurus, [GKH94]~41 and IRAS~04191+1523B. Based on continuum maps at 102~GHz (or 2.9~mm), spectral types and the spectral…