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18 papers · 2 filters
Rotation of molecular clouds in M~51
J. Braine, A. Hughes, E. Rosolowsky +4
The grand-design spiral galaxy M~51 was observed at 40pc resolution in CO(1--0) by the PAWS project. A large number of molecular clouds were identified and we search for velocity g…
The lifecycle of molecular clouds in nearby star-forming disc galaxies
Mélanie Chevance, J. M. Diederik Kruijssen, Alexander P. S. Hygate +29
It remains a major challenge to derive a theory of cloud-scale ( pc) star formation and feedback, describing how galaxies convert gas into stars as a function of the g…
The headlight cloud in NGC 628: An extreme giant molecular cloud in a typical galaxy disk
Cinthya N. Herrera, Jérôme Pety, Annie Hughes +25
Cloud-scale surveys of molecular gas reveal the link between molecular clouds properties and star formation (SF) across a range of galactic environments. Cloud populations in galax…
The Gas-Star Formation Cycle in Nearby Star-Forming Galaxies I. Assessment of Multi-scale Variations
Eva Schinnerer, Annie Hughes, Adam Leroy +21
The processes regulating star formation in galaxies are thought to act across a hierarchy of spatial scales. To connect extragalactic star formation relations from global and kpc-s…
The impact of the connectivity of the cosmic web on the physical properties of galaxies at its nodes
Katarina Kraljic, Christophe Pichon, Sandrine Codis +11
We investigate the impact of the number of filaments connected to the nodes of the cosmic web on the physical properties of their galaxies using the Sloan Digital Sky Survey. We co…
Mapping metallicity variations across nearby galaxy disks
K. Kreckel, I. -T. Ho, G. A. Blanc +21
The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled. We…
Revealing the Origin and Cosmic Evolution of Supermassive Black Holes
T. E. Woods, R. M. Alexandroff, S. L. Ellison +14
The next generation of electromagnetic and gravitational wave observatories will open unprecedented windows to the birth of the first supermassive black holes. This has the potenti…
Canadian Investigations of the Interstellar Medium
Alex S. Hill, Jan Cami, Laura Fissel +10
The interstellar medium mediates galactic evolution as the reservoir of material for future star formation and the repository of energy and matter output by stellar processes. Cana…
Producing Synthetic Maps of Dust Polarization using Velocity Channel Gradient Technique
Zekun Lu, A. Lazarian, Dmitri Pogosyan
In modern cosmology, many efforts have been put to detect primordial B-mode of cosmic microwave background (CMB) polarization from the gravitational waves generated during inflatio…
KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds
Jared Keown, James Di Francesco, Erik Rosolowsky +23
We present initial results from the K-band focal plane array Examinations of Young STellar Object Natal Environments (KEYSTONE) survey, a large project on the 100-m Green Bank Tele…
Droplets II: Internal Velocity Structures and Potential Rotational Motions in Pressure-dominated Coherent Structures
Hope How-Huan Chen, Jaime E. Pineda, Stella S. R. Offner +6
We present an analysis of the internal velocity structures of the newly identified sub-0.1 pc coherent structures, droplets, in L1688 and B18. By fitting 2D linear velocity fields…
Northern Galactic Molecular Cloud Clumps in Hi-GAL: Clump and Star Formation within Clouds
Erika Zetterlund, Jason Glenn, Erik Rosolowsky
We investigate how the properties of Galactic giant molecular clouds (GMCs) and their denser substructures (clumps) correlate with the local star formation rate. We trace clouds us…
The EDGE-CALIFA Survey: Exploring the Star Formation Law through Variable Selection
Biprateep Dey, Erik Rosolowsky, Yixian Cao +10
We present a multilinear analysis to determine the significant predictors of star formation in galaxies using the combined EDGE-CALIFA sample of galaxies. We analyze 1845 kpc-scale…
Comparing the Properties of GMCs in M33 from Simulations and Observations
C. L. Dobbs, E. Rosolowsky, A. R. Pettitt +3
We compare the properties of clouds in simulated M33 galaxies to those observed in the real M33. We apply a friends of friends algorithm and CPROPS to identify clouds, as well as a…
The Green Bank Ammonia Survey: A Virial Analysis of Gould Belt Clouds in Data Release 1
Ronan Kerr, Helen Kirk, James Di Francesco +14
We perform a virial analysis of starless dense cores in three nearby star-forming regions : L1688 in Ophiuchus, NGC 1333 in Perseus, and B18 in Taurus. Our analysis takes advantage…
Efficient methanol production on the dark side of a prestellar core
Jorma Harju, Jaime E. Pineda, Anton I. Vasyunin +23
We present ALMA maps of the starless molecular cloud core Ophiuchus/H-MM1 in the lines of deuterated ammonia (ortho-NH2D), methanol (CH3OH), and sulphur monoxide (SO). The dense co…
Relationship between the Line Width of the Atomic and Molecular ISM in M33
Eric W. Koch, Erik W. Rosolowsky, Andreas Schruba +5
We investigate how the spectral properties of atomic (HI) and molecular (H) gas, traced by CO(2-1), are related in M33 on pc scales. We find the HI and CO(2-1) velocity at…
Dense gas is not enough: environmental variations in the star formation efficiency of dense molecular gas at 100pc scales in M51
M. Querejeta, E. Schinnerer, A. Schruba +17
It remains unclear what sets the efficiency with which molecular gas transforms into stars. Here we present a new VLA map of the spiral galaxy M51 in 33GHz radio continuum, an exti…