Formation of slowly rotating early-type galaxies via major mergers: a resolution study
نویسندگان
چکیده
منابع مشابه
Properties of Early-type, Dry Galaxy Mergers and the Origin of Massive, Slowly Rotating, Pressure Supported Elliptical Galaxies
The luminosity dependence of kinematical and isophotal properties of elliptical galaxies is investigated using numerical simulations of galaxy merging, combined with semi-analytical models of hierarchical structure formation. Mergers of spiral galaxies as the only formation mechanism for elliptical galaxies can neither reproduce the kinematical and photometric properties of very massive ellipti...
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We search for ongoing major dry-mergers in a well selected sample of local Brightest Cluster Galaxies (BCGs) from the C4 cluster catalogue. 18 out of 515 early-type BCGs with redshift between 0.03 and 0.12 are found to be in major dry-mergers, which are selected as pairs (or triples) with r-band magnitude difference δmr < 1.5 and projected separation rp < 30 kpc, and showing signatures of inter...
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We investigate, by means of numerical simulations, the possibility of forming counter-rotating old stellar components by major mergers between an elliptical and a spiral galaxy. We show that counter-rotation can appear both in dissipative and dissipationless retrograde mergers, and it is mostly associated to the presence of a disk component, which preserves part of its initial spin. In turn, th...
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I discuss the formation of α-enhanced metal-rich stellar populations in the nuclei of luminous ellipticals. Based on hierarchical clustering , different galaxy formation scenarios, which imply different star formation histories, are considered. In contrast to the fast clumpy collapse mode, the late merger of two spiral galaxies fails to reproduce significantly α-enhanced abundance ratios, unles...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2010
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2010.16885.x