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1999MNRAS.310..663S - Mon. Not. R. Astron. Soc., 310, 663-676 (1999/December-2)
Galaxies in clusters: the observational characteristics of bow shocks, wakes and tails.
STEVENS I.R., ACREMAN D.M. and PONMAN T.J.
Abstract (from CDS):
There are several dynamical features that can be identified in these simulations. For supersonic galaxy motion, a leading bow shock is present, and also a weak gravitationally focused wake or tail behind the galaxy (analogous to Bondi-Hoyle accretion). For galaxies with higher mass replenishment rates and a denser interstellar medium (ISM), the dominant feature is a dense ram-pressure stripped tail. In line with other simulations, we find that the ICM/galaxy-ISM interaction can result in complex time-dependent dynamics, with ram-pressure stripping occurring in an episodic manner.
In order to facilitate this comparison between the observational consequences of dynamical studies and X-ray observations we have calculated synthetic X-ray flux and hardness maps from these simulations. These calculations predict that the ram-pressure stripped tail will usually be the most visible feature, though in nearby galaxies the bow shock preceding the galaxy should also be apparent in deeper X-ray observations. We briefly discuss these results and compare them with X-ray observations of galaxies where there is evidence of such interactions.
Abstract Copyright: 1999, Royal Astronomical Society
Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: Virgo - galaxies: interactions - intergalactic medium - galaxies: kinematics and dynamics - X-rays: galaxies
Simbad objects: 8
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