Tootfinder

Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster? #StarClusters – all with the same origin? https://www.uni-bonn.de/en/news/134-2025 - the trio of star clusters Orion Nebula, Pleiades and Hyades do not just randomly lie in the same region of space.

Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster?
Ghasem Safaei, Hosein Haghi, Akram Hasani Zonoozi, Pavel Kroupa
https://arxiv.org/abs/2507.12531

Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster?
Using direct $N$-body simulations, we investigate the initial conditions and evolution of a star-forming region resembling the Orion Nebula Cluster (ONC) with the advanced \textsc{NBODY6} code. By varying the initial conditions, we aim to identify a model that closely aligns with observed parameters such as the half-mass radius, core radius, and total mass. Additionally, we examine the cluster's evolution over 800 Myr to determine whether it could reproduce the present-day properties of the Ple…

JWST Spectra of Brown Dwarf Candidates in the Orion Nebula Cluster: https://arxiv.org/abs/2507.03679 / Spectroscopy of Free-Floating Planetary-Mass Objects and their disks with JWST: https://arxiv.org/abs/2507.05155

Large Scale Wind Driven Structures in the Orion Nebula
C. R. O'Dell, N. P. Abel
https://arxiv.org/abs/2507.02147 https://arxiv.or…

Large Scale Wind Driven Structures in the Orion Nebula
A study of [C II] 158 micron and HI 21-cm spectroscopic images plus high velocity resolution optical and ultraviolet spectra has shown the structure of the Orion Nebula to be different from that found from the study of those data separately. The [C II] features recently identified as the [C II] Shell is shown to be part of the Veil-B HI foreground layer. Jointly called the Outer Shell, it covers the bright Huygens Region and the Extended Orion Nebula. Its maximum expansion velocity is 15 km/s. …

Line ratio identification of external photoevaporation
Tyger Peake, Thomas J. Haworth, Mari-Liis Aru, William J. Henney
https://arxiv.org/abs/2506.19788 ht…

Line ratio identification of external photoevaporation
External photoevaporation of protoplanetary discs, by massive O stars in stellar clusters, is thought to be a significant process in the evolution of a disc. It has been shown to result in significant mass loss and disc truncation, ultimately reducing the lifetime of the discs, and possibly affecting potential planet populations. It is a well-studied process in the Orion Nebula Cluster (ONC) where the cometary morphology of proplyds is spatially resolvable due to its proximity to Earth. However…