6 papers
Expansion kinematics of young clusters. III. The kiloparsec sample
Joseph J. Armstrong, Jonathan C. Tan
We combine Gaia DR3 5-parameter astrometry with calibrated radial velocities for 23 nearby (<1 kpc) young (<60 Myr) clusters, with membership lists from Cantat-Gaudin et al. (2020)…
The JWST-NIRCam View of Sagittarius C. III. The Extinction Curve
LucÃa Bravo Ferres, Francisco Nogueras-Lara, Rainer Schödel +8
Determining the infrared extinction curve towards the Galactic centre is crucial for accurately correcting observed data and deriving the underlying stellar populations. However, e…
Expansion kinematics of young clusters. II. NGC 2264 N & S and Collinder 95 with HectoSpec
Ishani Cheshire, Joseph J. Armstrong, Jonathan C. Tan
Aims: Studying the dynamical evolution of young clusters is crucial for a more general understanding of the star formation process. Methods: We took spectra of >600 candidate pre-m…
Low-mass Runaways from the Orion Nebula Cluster -- Kinematic Age Constraints on Star Cluster Formation
Muhammad Fajrin, Joseph J. Armstrong, Jonathan C. Tan +2
In their early, formative stages star clusters can undergo rapid dynamical evolution leading to strong gravitational interactions and ejection of "runaway" stars at high velocities…
Expansion Kinematics of Young Clusters. I. Lambda Ori
Joseph J. Armstrong, Jonathan C. Tan
Context. Most stars form in clusters or associations but only a small number of these groups are expected to remain bound for longer than a few Myr. Once star formation has ended a…
The JWST-NIRCam View of Sagittarius C. I. Massive Star Formation and Protostellar Outflows
Samuel Crowe, Rubén Fedriani, Jonathan C. Tan +14
We present James Webb Space Telescope (JWST)-NIRCam observations of the massive star-forming molecular cloud Sagittarius C (Sgr C) in the Central Molecular Zone (CMZ). In conjuncti…