activity
20102026
most citedRelation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity

91 citations · 132 across the 8 of their papers we have counts for

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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.SR2025

Hubble's Variable Nebula I: Ripples on a Big Screen

John Lightfoot, Aleks Scholz

NGC2261 is a reflection nebula illuminated by the young star R Monocerotis. Objects moving near the star occasionally cast shadows on the nebula, giving rise to its alternative nam…

astro-ph.SR2025

Disks around young free-floating planetary-mass objects: Ultradeep Spitzer imaging of IC348

Holly Hanbee Seo, Aleks Scholz

Protoplanetary disks have been found around free-floating objects with masses comparable to those of giant planets. The frequency and properties of these disks around planetary-mas…

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…

astro-ph.SR2023

EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey

M. G. Guarcello, E. Flaccomio, J. F. Albacete-Colombo +48

Context. With a mass exceeding several 10^4 solar masses and a rich and dense population of massive stars, supermassive young star clusters represent the most massive star-forming…

astro-ph.SR2020★ 91 cited

Relation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity

E. Magaudda, B. Stelzer, K. R. Covey +3

We present a sample of 14 M dwarf stars observed with XMM-Newton and Chandra, for which we also computed rotational periods from Kepler Two-Wheel (K2) Mission light curves. We comp…

astro-ph.SR2010★ 21 cited

The enigmatic young brown dwarf binary FU Tau: accretion and activity

B. Stelzer, A. Scholz, C. Argiroffi +1

FU Tau belongs to a rare class of young, wide brown dwarf binaries. We have resolved the system in a Chandra X-ray observation and detected only the primary, FU Tau A. Hard X-ray e…