منابع مشابه
Strangulation in Galaxy Groups
We use a cosmological chemodynamical simulation to study how the group environment impacts the star formation properties of disk galaxies. The simulated group has a total mass of M ∼ 8 × 10 M⊙ and a total X-ray luminosity of LX ∼ 10 41 erg s. Our simulation suggests that ram pressure is not sufficient in this group to remove the cold disk gas from a Vrot ∼ 150 km s −1 galaxy. However, the major...
متن کاملGalaxy evolution in Hickson compact groups: the role of ram-pressure stripping and strangulation
Galaxies in compact groups tend to be deficient in neutral hydrogen compared to isolated galaxies of similar optical properties. In order to investigate the role played by a hot intragroup medium (IGM) for the removal and destruction of HI in these systems, we have performed a Chandra and XMM-Newton study of eight of the most HI deficient Hickson compact groups. Diffuse X-ray emission associate...
متن کاملStudying Galaxy Formation in Loose Galaxy Groups
We present the results of our HI survey of six loose groups of galaxies analogous to the Local Group. The survey was conducted using the Parkes telescope and the Australia Telescope Compact Array to produce a census of all the gas-rich galaxies and analogs to the high-velocity clouds (HVCs) within these groups down to MHI< 10 M⊙ as a test of models of galaxy formation. We present the HI mass fu...
متن کاملSatellite luminosities in galaxy groups
Halo model interpretations of the luminosity dependence of galaxy clustering assume that there is a central galaxy in every sufficiently massive halo, and that this central galaxy is very different from all the others in the halo. The halo model decomposition makes the remarkable prediction that the mean luminosity of the non-central galaxies in a halo should be almost independent of halo mass—...
متن کاملNeutral Hydrogen in Galaxy Groups
Abstract. We present preliminary results from a study of the neutral hydrogen (Hi) properties of an X-ray selected sample of nearby loose galaxy groups. This forms part of a multi-wavelength investigation (X-ray, optical and radio) of the formation and evolution of galaxies within a group environment. Some initial findings of an ATNF Parkes Multibeam wide-area neutral hydrogen (Hi) imaging surv...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2007
ISSN: 0004-637X,1538-4357
DOI: 10.1086/526544