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相关论文: Scaling relations of early-type galaxies in MOND

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Studies of stellar populations in early-type galaxies (ETGs) show that the more massive galaxies form earlier and have a shorter star formation history (SFH). In this study, we investigate the initial conditions of ETG formation. The study…

星系天体物理 · 物理学 2022-09-02 Robin Eappen , Pavel Kroupa , Nils Wittenburg , Moritz Haslbauer , Benoit Famaey

The mass assembly of galaxies leaves various imprints on their surroundings, such as shells, streams and tidal tails. The frequency and properties of these fine structures depend on the mechanism driving the mass assembly: e.g. a monolithic…

Beginning with a simple model for the growth of structure, I consider the dissipationless evolution of a MOND-dominated region in an expanding Universe by means of a spherically symmetric N-body code. I demonstrate that the final virialized…

天体物理学 · 物理学 2009-11-13 R. H. Sanders

Early-type galaxies (ETGs) are composed of two distinct populations: high-mass and low-mass, which are likely to be built via gas-poor merging and gas-rich merging/accretion, respectively. However, it is difficult to directly associate…

星系天体物理 · 物理学 2018-08-16 Song-lin Li , Yong shi , Yan-mei Chen , Martha Tabor , Dmitry Bizyaev , Jian-hang Chen , Xiao-ling Yu , Long-ji Bing

Cosmological simulations predict that early-type galaxies (ETGs) are the results of extended mass accretion histories. The latter are characterized by different numbers of mergers, mergers mass ratios and gas fractions, and timing.…

星系天体物理 · 物理学 2020-05-20 Magda Arnaboldi , Claudia Pulsoni , Ortwin Gerhard , ePN. S team

The formation of supermassive black holes (SMBHs) in early-type galaxies (ETGs) is a key challenge for galaxy formation theories. Using the monolithic collapse models of ETGs formed in Milgromian Dynamics (MOND) from Eappen et al. (2022),…

星系天体物理 · 物理学 2025-07-02 Robin Eappen , Pavel Kroupa

We present the Kormendy and mass-size relations for early-type galaxies (ETGs) as a function of environment at z~1.3. Our sample includes 76 visually classified ETGs with masses 10^10 < M/Msun < 10^11.5, selected in the Lynx supercluster…

Early-type galaxies (ETGs) show a bimodal distribution in key structural properties like stellar specific angular momentum, kinematic morphology, and nuclear surface brightness profiles. Slow rotator ETGs, mostly found in the densest…

星系天体物理 · 物理学 2025-10-17 Michele Cappellari

ABRIDGED: We study the evolution since z~1 of the rest-frame B luminosity function of the early-type galaxies (ETGs) in ~0.7 deg^2 in the COSMOS field. In order to identify ALL progenitors of local ETGs we construct the sample of high-z…

The evolution of the structural and kinematic properties of early-type galaxies (ETGs), their scaling relations, as well as their stellar metallicity and age contain precious information on the assembly history of these systems. We present…

Compact massive relic galaxies are a class of galaxies that exhibit characteristics suggesting they have remained largely unchanged since their initial formation, making them 'relics' of the early universe. These galaxies represent a…

星系天体物理 · 物理学 2024-02-02 Robin Eappen , Pavel Kroupa

Isolated early-type galaxies (iETGs) are evolving in unusually poor environments for this morphological family, which is typical of cluster inhabitants. We investigate the mechanisms driving the evolution of these galaxies. Several studies…

星系天体物理 · 物理学 2020-08-19 R. Rampazzo , A. Omizzolo , M. Uslenghi , J. Roman , P. Mazzei , L. Verdes-Montenegro , A. Marino , M. G. Jones

Early-type galaxies (ETGs, i.e. elliptical and lenticular galaxies) differ in their amount of rotational support -- some are purely supported by velocity dispersion, while others show pronounced ordered rotation. Cosmological hydrodynamical…

星系天体物理 · 物理学 2024-05-09 Michal Bilek , Pierre-Alain Duc , Elisabeth Sola

Early-type galaxies (ETGs) are reference systems to understand galaxy formation and evolution processes. The physics of their formation and internal dynamics are codified in well-known scaling relations. In this context, cosmological…

(abridged) Context. Gravitational fields at the outskirts of early-type galaxies (ETGs) are difficult to constrain observationally. It thus remains poorly explored how well the LCDM and MOND hypotheses agree with ETGs. Aims. This led us to…

星系天体物理 · 物理学 2019-05-08 Michal Bílek , Srdjan Samurović , Florent Renaud

[ABRIDGED] We aim to provide a holistic view on the typical size and kinematic evolution of massive early-type galaxies (ETGs), that encompasses their high-$z$ star-forming progenitors, their high-$z$ quiescent counterparts, and their…

星系天体物理 · 物理学 2018-05-18 A. Lapi , L. Pantoni , L. Zanisi , J. Shi , C. Mancuso , M. Massardi , F. Shankar , A. Bressan , L. Danese

Modified Newtonian Dynamics (MOND) has been shown to be able to fit spiral galaxy rotation curves as well as giving a theoretical foundation for empirically determined scaling relations, such as the Tully - Fisher law, without the need for…

宇宙学与河外天体物理 · 物理学 2015-05-20 V. F. Cardone , G. Angus , A. Diaferio , C. Tortora , R. Molinaro

We investigate two-dimensional image decomposition of nearby, morphologically selected early-type galaxies (ETGs). We are motivated by recent observational evidence of significant size growth of quiescent galaxies and theoretical…

星系天体物理 · 物理学 2017-02-22 Semyeong Oh , Jenny E. Greene , Claire N. Lackner

We present constraints on the formation and evolution of early-type galaxies (ETGs) with the empirical model EMERGE. The parameters of this model are adjusted so that it reproduces the evolution of stellar mass functions, specific star…

星系天体物理 · 物理学 2020-10-14 Benjamin P. Moster , Thorsten Naab , Simon D. M. White

The optical morphology of galaxies is strongly related to galactic environment, with the fraction of early-type galaxies increasing with local galaxy density. In this work we present the first analysis of the galaxy morphology-density…

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