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MOND simulation suggests the origin of some peculiarities in the Local Group
Michal Bílek, Ingo Thies, Pavel Kroupa +1
(abridged) The Milky Way (MW) and Andromeda (M31) galaxies possess rotating planes of satellites. Their formation has not been explained satisfactorily yet. It was suggested that t…
Emergence of the mass discrepancy-acceleration relation from dark matter-baryon interactions
Benoit Famaey, Justin Khoury, Riccardo Penco
The observed tightness of the mass discrepancy-acceleration relation (MDAR) poses a fine-tuning challenge to current models of galaxy formation. We propose that this relation could…
Phenomenological consequences of superfluid dark matter with baryon-phonon coupling
Lasha Berezhiani, Benoit Famaey, Justin Khoury
Recently, a new form of dark matter has been suggested to naturally reproduce the empirically successful aspects of Milgrom's law in galaxies. The dark matter particle candidates a…
Masses of the components of SB2 binaries observed with Gaia. IV. Accurate SB2 orbits for 14 binaries, and masses of 3 binaries
F. Kiefer, J. -L. Halbwachs, Y. Lebreton +7
The orbital motion of non-contact double-lined spectroscopic binaries (SB2), with periods of a few tens of days to several years, holds unique accurate informations on individual s…
On the derivation of radial velocities of SB2 components: a "CCF vs TODCOR" comparison
Jean-Louis Halbwachs, Flavien Kiefer, Frédéric Arenou +5
The radial velocity (RV) of a single star is easily obtained from cross-correlation of the spectrum with a template, but the treatment of double-lined spectroscopic binaries (SB2s)…
The programme "accurate masses for SB2 components"
Jean-Louis Halbwachs, Frédéric Arenou, Henri M. J. Boffin +11
Accurate stellar masses are requested in order to improve our understanding of stellar interiors, but they are still rather rare. Fortunately, the forthcoming Gaia Mission will pro…