activity
20242026
most citedSCOTCH III: Complete search for Hypercompact HII regions in the fourth quadrant

3 citations · 6 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.GA2026

ATLASGAL: The HCN-IR Star Formation Relation for the Milky Way

I. I. Grozdanova, J. S. Urquhart, W. -J. Kim +8

We examine the relation between star formation and dense gas, traced by HCN(1-0), using a sample of 343 Galactic clumps spanning the full range of evolutionary stages representativ…

astro-ph.SR2026

A survey for variable young stars with small telescopes - XI. Spot Lifetimes and Coverage Distributions

Dirk Froebrich, Carys Herbert, Aleks Scholz +47

We present a homogeneous analysis of rotational variability and spot properties in young stellar objects across multiple star-forming regions observed by the Hunting Outbursting Yo…

astro-ph.GA2025★ 3 cited

SCOTCH III: Complete search for Hypercompact HII regions in the fourth quadrant

A. L. Patel, J. S. Urquhart, A. Y. Yang +7

We present high-frequency (18-24 GHz) radio continuum observations towards 335 methanol masers, excellent signposts for young, embedded high-mass protostars. These complete the sea…

astro-ph.GA2025★ 3 cited

OGHReS: Star formation in the Outer Galaxy II (-)

J. S. Urquhart, C. Koenig, D. Colombo +19

The Outer Galaxy High-Resolution Survey (OGHReS) covers 100 square degrees () in the (2--1) transitions of three CO-isotopologues. We use the spectra…

astro-ph.SR2024

A survey for variable stars with small telescopes: IX -- Evolution of Spot Properties on YSOs in IC5070

Carys Herbert, Dirk Froebrich, Siegfried Vanaverbeke +45

We present spot properties on 32 periodic young stellar objects in IC 5070. Long term, 5 yr, light curves in the , , and -bands are obtained through the HOYS (Huntin…

astro-ph.SR2024

A survey for variable young stars with small telescopes: VIII -- Properties of 1687 Gaia selected members in 21 nearby clusters

Dirk Froebrich, Aleks Scholz, Justyn Campbell-White +60

The Hunting Outbursting Young Stars (HOYS) project performs long-term, optical, multi-filter, high cadence monitoring of 25 nearby young clusters and star forming regions. Utilisin…