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PHANGS-JWST First Results: Tracing the Diffuse ISM with JWST Imaging of Polycyclic Aromatic Hydrocarbon Emission in Nearby Galaxies
Karin M. Sandstrom, Eric W. Koch, Adam K. Leroy +43
JWST observations of polycyclic aromatic hydrocarbon (PAH) emission provide some of the deepest and highest resolution views of the cold interstellar medium (ISM) in nearby galaxie…
PHANGS--JWST First Results: ISM structure on the turbulent Jeans scale in four disk galaxies observed by JWST and ALMA
Sharon E. Meidt, Erik Rosolowsky, Jiayi Sun +31
JWST/MIRI imaging of the nearby galaxies IC 5332, NGC 628, NGC 1365 and NGC 7496 from PHANGS reveals a richness of gas structures that in each case form a quasi-regular network of…
The PHANGS-JWST Treasury Survey: Star Formation, Feedback, and Dust Physics at High Angular resolution in Nearby GalaxieS
Janice C. Lee, Karin M. Sandstrom, Adam K. Leroy +74
The PHANGS collaboration has been building a reference dataset for the multi-scale, multi-phase study of star formation and the interstellar medium in nearby galaxies. With the suc…
PHANGS-JWST First Results: Duration of the early phase of massive star formation in NGC628
Jaeyeon Kim, Mélanie Chevance, J. M. Diederik Kruijssen +33
The earliest stages of star formation, when young stars are still deeply embedded in their natal clouds, represent a critical phase in the matter cycle between gas clouds and young…
PHANGS-JWST First Results: Multi-wavelength view of feedback-driven bubbles (The Phantom Voids) across NGC 628
Ashley T. Barnes, Elizabeth J. Watkins, Sharon E. Meidt +51
We present a high-resolution view of bubbles within The Phantom Galaxy (NGC 628); a nearby (~10Mpc), star-forming (~2Msun/yr), face-on (i~9deg) grand-design spiral galaxy. With new…
PHANGS-JWST First Results: Spurring on Star Formation: JWST Reveals Localised Star Formation in a Spiral Arm Spur of NGC 628
Thomas G. Williams, Jiayi Sun, Ashley T. Barnes +34
We combine JWST observations with ALMA CO and VLT-MUSE H data to examine off-spiral arm star formation in the face-on, grand-design spiral galaxy NGC 628. We focus on the northe…
Filament Formation via Collision-induced Magnetic Reconnection -- Formation of a Star Cluster
Shuo Kong, David Whitworth, Rowan J. Smith +1
A collision-induced magnetic reconnection (CMR) mechanism was recently proposed to explain the formation of a filament in the Orion A molecular cloud. In this mechanism, a collisio…
Magnetic fields do not suppress global star formation in low metallicity dwarf galaxies
David J. Whitworth, Rowan J. Smith, Ralf S. Klessen +5
Many studies concluded that magnetic fields suppress star formation in molecular clouds and Milky Way like galaxies. However, most of these studies are based on fully developed fie…
Why most molecular clouds are gravitationally dominated
Laura Ramírez-Galeano, Javier Ballesteros-Paredes, Rowan Smith +2
Observational and theoretical evidence suggests that a substantial population of molecular clouds (MCs) appear to be unbound, dominated by turbulent motions. However, these estimat…
The Galactic dynamics revealed by the filamentary structure in atomic hydrogen emission
Juan D. Soler, Marc-Antoine Miville-Deschênes, Sergio Molinari +13
We present a study of the filamentary structure in the atomic hydrogen (HI) emission at the 21 cm wavelength toward the Galactic plane using the observations in the HI4PI survey. U…
How Cosmic Rays Mediate the Evolution of the Interstellar Medium
Christine M. Simpson, Rüdiger Pakmor, Christoph Pfrommer +2
We explore the impact of diffusive cosmic rays (CRs) on the evolution of the interstellar medium (ISM) under varying assumptions of supernova explosion environment. In practice, we…
The Magnetic Field in the Milky Way Filamentary Bone G47
Ian W. Stephens, Philip C. Myers, Catherine Zucker +21
Star formation primarily occurs in filaments where magnetic fields are expected to be dynamically important. The largest and densest filaments trace spiral structure within galaxie…