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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, ...

ATLASGAL --- Molecular fingerprints of a sample of massive star forming clumps

Urquhart, J. S.; Figura, C.; Wyrowski, F.; Giannetti, A.; Kim, W. -J.; Wienen, M.; Leurini, S.; Pillai, T.; Csengeri, T.; Gibson, S. J.; Menten, K.; Moore, T. J. T.; Thompson, M. A. (2019-04-21)

We have conducted a 3-mm molecular-line survey towards 570 high-mass star-forming clumps, using the Mopra telescope. The sample is selected from the 10 000 clumps identified by the ATLASGAL (APEX Telescope Large Area Survey ...

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. (2019-04-21)

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 ...

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 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 ...

Disentangling the spatial substructure of Cygnus OB2 from Gaia DR2

Berlanas, S. R.; Wright, N.; Herrero, A.; Drew, J. E.; Lennon, D. J. (2019-04-01)

For the first time, we have explored the spatial substructure of the Cygnus OB2 association using parallaxes from the recent second Gaia data release. We find significant line-of-sight substructure within the association, ...

The Halo Mass of Optically Luminous Quasars at z ,F≈ ,F1-2 Measured via Gravitational Deflection of the Cosmic Microwave Background

Geach, J. E.; Peacock, J. A.; Myers, A. D.; Hickox, R. C.; Burchard, M. C.; Jones, M. L. (2019-03-27)

We measure the average deflection of cosmic microwave background photons by quasars at 〈Z〉= 1.7. Our sample is selected from the Sloan Digital Sky Survey to cover the redshift range 0.9 ≤z≤2.2 with absolute i-band magnitudes ...

Positron Annihilation in the Galaxy

Kierans, C.~A.; Beacom, J.~F.; Boggs, S.; Buckley, M.; Caputo, R.; Crocker, R.; De Becker, M.; Diehl, R.; Fryer, C.~L.; Griffin, S.; Hartmann, D.; Hays, E.; Jean, P.; Krause, M.~G.~H.; Linden, T.; Marcowith, A.; Martin, P.; Moiseev, A.; Oberlack, U.; Orlando, E.; Panther, F.; Prantzos, N.; Rothschild, R.; Seitenzahl, I.; Shrader, C.; Siegert, T.; Strong, A.; Tomsick, J.; Vestrand, W.~T.; Zoglauer, A. (2019-03-13)

The 511 keV line from positron annihilation in the Galaxy was the first γ-ray line detected to originate from outside our solar system. Going into the fifth decade since the discovery, the source of positrons is still ...

Quantum Kerr oscillators' evolution in phase space : Wigner current, symmetries, shear suppression and special states

Oliva, Maxime; Steuernagel, Ole (2019-03-06)

The creation of quantum coherences requires a system to be anharmonic. The simplest such continuous one-dimensional quantum system is the Kerr oscillator. It has a number of interesting symmetries we derive. Its quantum ...

The metallicity and elemental abundance maps of kinematically atypical galaxies for constraining minor merger and accretion histories

Taylor, Philip; Kobayashi, Chiaki; Federrath, Christoph (2019-03-06)

Explaining the internal distribution and motions of stars and gas in galaxies is a key aspect in understanding their evolution. In previous work we identified five well-resolved galaxies with atypical kinematics from a ...

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