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相关论文: The redshift evolution of early-type galaxies in C…

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The characteristic size of early-type galaxies (ETGs) of given stellar mass is observed to increase significantly with cosmic time, from redshift z>2 to the present. A popular explanation for this size evolution is that ETGs grow through…

星系天体物理 · 物理学 2019-08-14 C. Nipoti , T. Treu , M. W. Auger , A. S. Bolton

Several studies have suggested that the observed size evolution of massive early-type galaxies (ETGs) can be explained as a combination of dry mergers and progenitor bias, at least since z\sim1. In this paper we carry out a new test of the…

宇宙学与河外天体物理 · 物理学 2015-06-17 Alessandro Sonnenfeld , Carlo Nipoti , Tommaso Treu

[Abridged]We present the morphological analysis based on HST-NICMOS observations in the F160W filter of a sample of 32 early-type galaxies (ETGs) at 1<z<2 with spectroscopic confirmation of their redshift and spectral type. We find that…

天体物理学 · 物理学 2009-11-13 P. Saracco , M. Longhetti , S. Andreon

Aims: We present a new method that uses luminosity or stellar mass functions combined with clustering measurements to select samples of galaxies at different redshifts likely to follow a progenitor-to-descendant relationship. As the method…

宇宙学与河外天体物理 · 物理学 2015-05-28 Nelson Padilla , Daniel Christlein , Eric Gawiser , Danilo Marchesini

We present a new analysis of the rest-frame B-band COMBO-17 and DEEP2 luminosity functions (LFs) of early-type galaxies (ETGs) as a function of luminosity and mass. Our aim is to place new stringent constraints on the evolution of ETGs…

天体物理学 · 物理学 2010-12-09 A. Cimatti , E. Daddi , A. Renzini

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

We report on the evolution of the number density and size of early-type galaxies from z~2 to z~0. We select a sample of 563 massive (M>10^{10} Msun), passively evolving (SSFR<10^{-2} Gyr^{-1}) and morphologically spheroidal galaxies at…

[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

We study the evolutionary trend of the total density profile of early-type galaxies (ETGs) in IllustrisTNG. To this end, we trace ETGs from $z=0$ to $z=4$ and measure the power-law slope $\gamma^{\prime}$ of the total density profile for…

Dry (i.e. dissipationless) merging has been proposed as the main driver of the observed size evolution of early-type galaxies (ETGs). The actual role of this mechanism is questioned by the tightness of the local stellar mass-size relation…

星系天体物理 · 物理学 2011-09-09 Carlo Nipoti

Early-type galaxies (ETGs) are observed to be more compact at z>2 than in the local Universe. Remarkably, much of this size evolution appears to take place in a short (1.8 Gyr) time span between z=2.2 and z=1.3, which poses a serious…

星系天体物理 · 物理学 2015-06-04 C. Nipoti , T. Treu , A. Leauthaud , K. Bundy , A. B. Newman , M. W. Auger

We present the analysis of a large sample of early-type galaxies (ETGs) at 0<z<3 aimed at tracing the cosmic evolution of their size and compare it with a model of pure dissipationless (dry) merging in the LambdaCDM framework. The effective…

宇宙学与河外天体物理 · 物理学 2015-06-04 A. Cimatti , C. Nipoti , P. Cassata

We use GOODS and CANDELS images to identify progenitors of massive (log M > 10 Msun) compact "early-type" galaxies (ETGs) at z~1.6. Since merging and accretion increase the size of the stellar component of galaxies, if the progenitors are…

According to a popular scenario supported by numerical models, the mass assembly and growth of massive galaxies, in particular the Early-Type Galaxies (ETGs), is, below a redshift of 1, mainly due to the accretion of multiple gas--poor…

宇宙学与河外天体物理 · 物理学 2015-06-15 Pierre-Alain Duc

Several studies have tried to ascertain whether or not the increase in abundance of the early-type galaxies (E-S0a's) with time is mainly due to major mergers, reaching opposite conclusions. We have tested it directly through…

宇宙学与河外天体物理 · 物理学 2015-05-18 M. C. Eliche-Moral , M. Prieto , J. Gallego , G. Barro , J. Zamorano , C. Lopez-Sanjuan , M. Balcells , R. Guzman , J. C. Munoz-Mateos

Morphological and spectroscopic studies of high redshift clusters indicate that a significant fraction of present-day early-type galaxies was transformed from star forming galaxies at z<1. On the other hand, the slow luminosity evolution of…

天体物理学 · 物理学 2007-05-23 Pieter G. van Dokkum , Marijn Franx

We introduce a framework for simultaneously investigating the structure and luminosity evolution of early-type gravitational lens galaxies. The method is based on the fundamental plane, which we interpret using the aperture mass-radius…

天体物理学 · 物理学 2009-11-10 D. Rusin , C. S. Kochanek

Major progress has been achieved in recent years in mapping the properties of passively-evolving, early-type galaxies (ETG) from the local universe all the way to redshift ~2. Here, age and metallicity estimates for local cluster and field…

天体物理学 · 物理学 2011-02-11 Alvio Renzini

The most massive early-type galaxies (ETGs) are known to form through numerous galaxy mergers. Thus, it is intriguing to study whether their formation in low-density environments, where nearby companions are almost absent, is associated…

星系天体物理 · 物理学 2024-10-24 Yongmin Yoon , Jae-Woo Kim , Jongwan Ko

We study the evolution of galaxy structure since z ~ 1 to the present. From a GOODS-S multi-band catalog we define (blue) luminosity- and mass-weighted samples, limited by M_B <= -20 and M_star >= 10^10 M_Sun, comprising 1122 and 987…

宇宙学与河外天体物理 · 物理学 2014-11-20 C. López-Sanjuan , M. Balcells , P. G. Pérez-González , G. Barro , C. E. García-Dabó , J. Gallego , J. Zamorano
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