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A Model for the Onset of Self-gravitation and Star Formation in Molecular Gas Governed by Galactic Forces: I. Cloud-scale Gas Motions
Sharon E. Meidt, Adam K. Leroy, Erik Rosolowsky +10
Modern extragalactic molecular gas surveys now reach the scales of star-forming giant molecular clouds (GMCs, 20-50 pc). Systematic variations in GMC properties with galaxy environ…
An Overview of the MHONGOOSE Survey: Observing Nearby Galaxies with MeerKAT
W. J. G. de Blok, E. A. K. Adams, P. Amram +65
MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with HI masses from 10^6 to ~10^{11} M_sun, and lumi…
Cloud Scale ISM Structure and Star Formation in M51
Adam K. Leroy, Eva Schinnerer, Annie Hughes +17
We compare the structure of molecular gas at pc resolution to the ability of gas to form stars across the disk of the spiral galaxy M51. We break the PAWS survey into pc…
Galactic Supernova Remnant Candidates Discovered by THOR
L. D. Anderson, Y. Wang, S. Bihr +17
There is a considerable deficiency in the number of known supernova remnants (SNRs) in the Galaxy compared to that expected. Searches for extended low-surface brightness radio sour…
New ALMA constraints on the star-forming ISM at low metallicity: A 50 pc view of the blue compact dwarf galaxy SBS0335-052
D. Cormier, G. J. Bendo, S. Hony +8
Properties of the cold interstellar medium of low-metallicity galaxies are not well-known due to the faintness and extremely small scale on which emission is expected. We present d…
Physical Properties of Molecular Clouds at 2 parsec Resolution in the Low-Metallicity Dwarf Galaxy NGC 6822 and the Milky Way
Andreas Schruba, Adam K. Leroy, J. M. Diederik Kruijssen +6
We present the ALMA survey of CO(2-1) emission from the 1/5 solar metallicity, Local Group dwarf galaxy NGC 6822. We achieve high (0.9 arcsec ~ 2 pc) spatial resolution while cover…
CO/CO Gradients Across the Disks of Nearby Spiral Galaxies
M. J. Jimenez-Donaire, D. Cormier, F. Bigiel +14
We use the IRAM Large Program EMPIRE and new high-resolution ALMA data to measure 13CO(1-0)/C18O(1-0) intensity ratios across nine nearby spiral galaxies. These isotopologues of CO…