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'The Brick' is not a brick : A comprehensive study of the structure and dynamics of the Central Molecular Zone cloud G0.253+0.016

Henshaw, J. D.; Ginsburg, A.; Haworth, T. J.; Longmore, S. N.; Kruijssen, J. M. D.; Mills, E. A. C.; Sokolov, V.; Walker, D. L.; Barnes, A. T.; Contreras, Y.; Bally, J.; Battersby, C.; Beuther, H.; Butterfield, N.; Dale, James; Henning, T.; Jackson, J. M.; Kauffmann, J.; Pillai, T.; Ragan, S.; Riener, M.; Zhang, Q. (2019-05-01)

In this paper we provide a comprehensive description of the internal dynamics of G0.253+0.016 (a.k.a. 'the Brick'); one of the most massive and dense molecular clouds in the Galaxy to lack signatures of widespread star ...

Computing finite semigroups

East, James; Egri-Nagy, Attila; Mitchell, James D.; Peresse, Yann (2019-05-01)

Using a variant of Schreier's Theorem, and the theory of Green's relations, we show how to reduce the computation of an arbitrary subsemigroup of a finite regular semigroup to that of certain associated subgroups. Examples ...

Impact of along-valley orographic variations on the dispersion of passive tracers in a stable atmosphere

Quimbayo-Duarte, Julian; Staquet, Chantal; Chemel, Charles; Arduini, Gabriele (2019-04-25)

A numerical model is used to investigate the transport of passive tracers in an idealized Alpine valley during stable wintertime conditions after the evening transition. The valley is composed of an upstream-valley section, ...

JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies : II. SCUBA-2 850 μm data reduction and dust flux density catalogues

Smith, Matthew W. L.; Clark, Christopher J. R.; Looze, Ilse De; Lamperti, Isabella; Saintonge, Amélie; Wilson, Christine D.; Accurso, Gioacchino; Brinks, Elias; Bureau, Martin; Chung, Eun Jung; Cigan, Phillip J.; Clements, David L.; Dharmawardena, Thavisha; Fanciullo, Lapo; Gao, Yang; Gao, Yu; Gear, Walter K.; Gomez, Haley L.; Greenslade, Joshua; Hwang, Ho Seong; Kemper, Francisca; Lee, Jong Chul; Li, Cheng; Lin, Lihwai; Liu, Lijie; Molnár, Dániel Cs; Mok, Angus; Pan, Hsi-An; Sargent, Mark; Scicluna, Peter; Smith, Connor M. A.; Urquhart, Sheona; Williams, Thomas G.; Xiao, Ting; Yang, Chentao; Zhu, Ming (2019-04-17)

We present the SCUBA-2 850 ${\mu}m$ component of JINGLE, the new JCMT large survey for dust and gas in nearby galaxies, which with 193 galaxies is the largest targeted survey of nearby galaxies at 850 ${\mu}m$. We provide ...

A flat trend of star-formation rate with X-ray luminosity of galaxies hosting AGN in the SCUBA-2 Cosmology Legacy Survey

Ramasawmy, Joanna; Stevens, Jason; Martin, Garreth; Geach, James E. (2019-04-17)

Feedback processes from active galactic nuclei (AGN) are thought to play a crucial role in regulating star formation in massive galaxies. Previous studies using \textit{Herschel} have resulted in conflicting conclusions ...

Dispersion of tracers in the stable atmosphere of a valley opening onto a plain

Quimbayo-Duarte, Julian; Staquet, Chantal; Chemel, Charles; Arduini, Gabriele (2019-04-04)

We quantify the impact of a valley-wind system on the transport of passive tracers in the stably-stratified atmosphere of a valley dynamically decoupled from the atmosphere above. The simple configuration of an idealized ...

ALMA survey of Class II protoplanetary disks in Corona Australis : a young region with low disk masses

Cazzoletti, P.; Manara, C. F.; Liu, H. B.; Dishoeck, E. F. van; Facchini, S.; Alcalà, J. M.; Ansdell, M.; Testi, L.; Williams, J. P.; Carrasco-González, C.; Dong, R.; Forbrich, J.; Fukagawa, M.; Galván-Madrid, R.; Hirano, N.; Hogerheijde, M.; Hasegawa, Y.; Muto, T.; Pinilla, P.; Takami, M.; Tamura, Motohide; Tazzari, M.; Wisniewski, J. P. (2019-04-03)

In recent years, the disk populations in a number of young star-forming regions have been surveyed with ALMA. Understanding the disk properties and their correlation with those of the central star is critical to understand ...

The dynamical evolution of molecular clouds near the Galactic Centre -- III. Tidally--induced star formation in protocluster clouds

Dale, James E.; Kruijssen, J. M. Diederik; Longmore, S. N. (2019-04-02)

As part of a series of papers aimed at understanding the evolution of the Milky Way's Central Molecular Zone (CMZ), we present hydrodynamical simulations of turbulent molecular clouds orbiting in an accurate model of the ...

The dynamical evolution of molecular clouds near the Galactic Centre - II. Spatial structure and kinematics of simulated clouds

Kruijssen, J. M. D.; Dale, J. E.; Longmore, S. N.; Walker, D. L.; Henshaw, J. D.; Jeffreson, S. M. R.; Petkova, M. A.; Ginsburg, A.; Barnes, A. T.; Battersby, C. D.; Immer, K.; Jackson, J. M.; Keto, E. R.; Krieger, N.; Mills, E. A. C.; Sánchez-Monge, Á.; Schmiedeke, A.; Suri, S. T.; Zhang, Q. (2019-04-01)

The evolution of molecular clouds in galactic centres is thought to differ from that in galactic discs due to a significant influence of the external gravitational potential. We present a set of numerical simulations of ...

The SCUBA-2 Cluster Snapshot Survey - I. Catalogue of lensed galaxies and submillimetre-bright central galaxies

Cheale, R.~A.; Geach, J.~E.; Edge, A.~C.; Blain, A.~W.; Chapman, S.~C.; Egami, E.; Hogan, M.~T.; Rawle, T.~D.; Webb, T.~M.~A. (2019-04-01)

The SCUBA-2 Cluster Snapshot Survey (S2CSS) observed 202 rich clusters of galaxies at 850 μm in relatively poor submillimetre observing conditions (⁠τ225GHz>0.1⁠) with the aim of identifying rare examples of bright (tens ...

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