2k citations
- Centre National de la Recherche ScientifiqueFR24 papers
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12 papers · 1 filter
New Methods for Determining the Ages of PMS Stars
Tim Naylor, N. J. Mayne, R. D. Jeffries +2
We present three new methods for determining the age of groups of pre-main-sequence stars. The first, creating empirical isochrones allows us to create a robust age ordering, but n…
Multi-generation massive star-formation in NGC3576
C. R. Purcell, V. Minier, S. N. Longmore +7
Recent 1.2-mm continuum observations have shown the giant HII region NGC3576 to be embedded in the centre of an extended filamentary dust-cloud. The bulk of the filament away from…
Integral Galois Module Structure for Elementary Abelian Extensions with a Galois Scaffold
Nigel P. Byott, G. Griffith Elder
This paper justifies an assertion in (Elder, Proc AMS 137 (2009), no 4, 1193--1203) that Galois scaffolds make the questions of Galois module structure tractable. Let be a perf…
Self-gravitating discs with radiative transfer: their role in giant planet formation
Farzana Meru, Matthew R. Bate
We present preliminary results on the ability of self-gravitating discs to cool in response to their internal heating. These discs are modelled using a Smoothed Particle Hydrodynam…
Oscillating Ponomarenko dynamo in the highly conducting limit
Marine Peyrot, Andrew Gilbert, Franck Plunian
This paper considers dynamo action in smooth helical flows in cylindrical geometry, otherwise known as Ponomarenko dynamos, with periodic time dependence. An asymptotic framework i…
From Protostars to Planetary Systems : FUV Spectroscopy of YSOs, Protoplanetary Disks, and Extrasolar Giant Planets
Paul A. Scowen, Rolf Jansen, Matthew Beasley +7
The last two decades have seen remarkable progress in our long-standing goal of determining the abundance and diversity of worlds in the Galaxy. Understanding of this subject invol…