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2011MNRAS.415.2607D - Mon. Not. R. Astron. Soc., 415, 2607-2625 (2011/August-2)
Mismatch and misalignment: dark haloes and satellites of disc galaxies.
DEASON A.J., McCARTHY I.G., FONT A.S., EVANS N.W., FRENK C.S., BELOKUROV V., LIBESKIND N.I., CRAIN R.A. and THEUNS T.
Abstract (from CDS):
We attribute the anisotropic spatial distribution and angular momentum bias of the satellites at z= 0 to their directional accretion along the major axes of the dark matter halo. The satellite galaxies have been accreted relatively recently compared to the dark matter mass and have experienced less phase-mixing and relaxation – the memory of their accretion history can remain intact to z= 0. Understanding the phase-space distribution of the z= 0 satellite population is key for studies that estimate the host halo mass from the line-of-sight velocities and projected positions of satellite galaxies. We quantify the effects of such systematics in estimates of the host halo mass from the satellite population.
Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS
Journal keyword(s): galaxies: general - galaxies: haloes - galaxies: kinematics and dynamics - cosmology: theory - dark matter
Simbad objects: 3
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