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27 papers · 2 filters
Tides in colliding galaxies
Pierre-Alain Duc, Florent Renaud
Long tails and streams of stars are the most noticeable upshots of galaxy collisions. Their origin as gravitational, tidal, disturbances has however been recognized only less than…
Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions
Benoit Famaey, Stacy McGaugh
A wealth of astronomical data indicate the presence of mass discrepancies in the Universe. The motions observed in a variety of classes of extragalactic systems exceed what can be…
Ram pressure stripping of the multiphase ISM and star formation in the Virgo spiral galaxy NGC 4330
B. Vollmer, M. Soida, J. Braine +6
It has been shown that the Virgo spiral galaxy NGC 4330 shows signs of ongoing ram pressure stripping in multiple wavelengths: at the leading edge of the interaction, the Halpha an…
Constraining local UV field geometry at reionization using Milky Way satellites
P. Ocvirk, D. Aubert
We present a new semi-analytical model of the population of satellite galaxies of the Milky Way, aimed at estimating the effect of the geometry of reionization at galaxy scale on t…
Polytropic model fits to the globular cluster NGC 2419 in Modified Newtonian Dynamics
Rodrigo Ibata, Antonio Sollima, Carlo Nipoti +3
We present an analysis of the globular cluster NGC 2419, using a polytropic model in Modified Newtonian Dynamics (MOND) to reproduce recently published high quality data of the str…
Non-Standard Grain Properties, Dark Gas Reservoir, and Extended Submillimeter Excess, Probed by Herschel in the Large Magellanic Cloud
F. Galliano, S. Hony, J. -P. Bernard +13
Aims: In this paper, we perform detailed modelling of the Spitzer and Herschel observations of the LMC, in order to: (i) systematically study the uncertainties and biases affecting…