8 papers · 1 filter
JWST observations of cosmic-ray-excited H in Barnard 68: spatial variations and constraints on cosmic-ray attenuation
David A. Neufeld, Kedron Silsbee, Alexei V. Ivlev +9
We present James Webb Space Telescope (JWST) NIRSpec observations of the starless dark cloud Barnard 68 that reveal the spatially-resolved signature of cosmic-ray excited molecular…
Warm and cold molecular gas in the cluster center of MACS 1931-26 with JWST and ALMA
L. Ghodsi, L. Kuhn, A. W. S. Man +9
We perform one of the first spatially resolved studies of warm (100 K) and cold (10-100 K) molecular gas in the circumgalactic medium (CGM), focusing on the brightest cluster ga…
The first detection of cosmic-ray excited H in interstellar space
Shmuel Bialy, Amit Chemke, David A. Neufeld +12
Stars and planets form within cold, dark molecular clouds. In these dense regions, where starlight cannot penetrate, cosmic rays (CRs) are the dominant source of ionization -- driv…
Tight correlation of star formation with [Ci] and CO lines across cosmic time
Theodoros Topkaras, Thomas G. Bisbas, Zhi-Yu Zhang +1
Context. Cold molecular gas tracers, such as CI and CO lines, have been widely used to infer specific characteristics of the ISM and to derive star-formation relations among galaxi…
Extended multi-phase gas reservoirs in the z=4.3 protocluster SPT2349-56: non-stellar ionisation sources?
Kevin C. Harrington, Amit Vishwas, Allison W. S. Man +4
We aim to characterize the multi-phase gas in the SPT2349-56 protocluster at z=4.3, known to host one of the most starbursting and AGN-rich high redshift environments.For this purp…
NeuralPDR: Neural Differential Equations as surrogate models for Photodissociation Regions
Gijs Vermariën, Thomas G. Bisbas, Serena Viti +3
Computational astrochemical models are essential for helping us interpret and understand the observations of different astrophysical environments. In the age of high-resolution tel…