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相关论文: Redshift Evolution of the Fundamental Plane Relati…

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The gas mass fraction in galaxy clusters has been widely used to determine cosmological parameters. This method assumes that the ratio of the cluster gas mass fraction to the cosmic baryon fraction ($\gamma(z)$) is constant as a function of…

宇宙学与河外天体物理 · 物理学 2021-04-01 Kamal Bora , Shantanu Desai

Recent observations have gathered a considerable sample of high redshift galaxy candidates and determined the evolution of their luminosity function (LF). To interpret these findings, we use cosmological SPH simulations including, in…

宇宙学与河外天体物理 · 物理学 2015-05-18 R. Salvaterra , A. Ferrara , P. Dayal

Studies of high-redshift galaxies usually interpret offsets from the Tully- Fisher (TF) relation as luminosity evolution. However, apparent luminosity offsets may actually reflect rotation curve anomalies such as strong asymmetries or…

天体物理学 · 物理学 2008-11-26 Sheila J. Kannappan , Elizabeth J. Barton

We study the evolution of the red and blue galaxies from $z=3$ to $z=0$ using the EAGLE simulation. The galaxies in the blue cloud and the red sequence are separated at each redshift using a scheme based on Otsu's method. Our analysis shows…

星系天体物理 · 物理学 2024-09-17 Apashanka Das , Biswajit Pandey

We present an empirical parameterization of the [NII]/H$\alpha$ flux ratio as a function of stellar mass and redshift valid at 0 < z < 2.7 and 8.5 < log(M) < 11.0. This description can easily be applied to (i) simulations for modeling…

In this work, we study the evolution with redshift of the colour-magnitude relation (CMR) of early-type galaxies. This evolution is analyzed through cosmological numerical simulations from z = 2 to z = 0. The preliminary results shown here…

星系天体物理 · 物理学 2020-05-12 L. J. Zenocratti , A. V. Smith Castelli , M. E. De Rossi , F. R. Faifer

We investigate the fundamental plane (FP) of selected early-type (ETG) member galaxies of the galaxy cluster PLCK G287.0+32.9 ($ z_c = 0.3833 $), exploring also four-dimensional hyperplane extensions. We measure ETGs structural parameters…

Local and intermediate redshift (z~0.5) galaxy samples obey well correlated relations between the stellar population luminosity and maximal galaxy rotation that define the Tully-Fisher (TF) relation. Consensus is starting to be reached on…

天体物理学 · 物理学 2008-11-26 Kuenley Chiu , Steven P. Bamford , Andrew Bunker

Using the First Light And Reionisation Epoch Simulations (\textsc{Flares}) we explore the dust driven properties of massive high-redshift galaxies at $z\in[5,10]$. By post-processing the galaxy sample using the radiative transfer code…

Early JWST observations have revealed substantial numbers of galaxies out to redshifts as high as $z \simeq 14$, reflecting a slow evolution of the galaxy UV luminosity function (LF) not anticipated by many models of galaxy evolution. The…

星系天体物理 · 物理学 2025-04-16 C. T. Donnan , J. S. Dunlop , R. J. McLure , D. J. McLeod , F. Cullen

(ABRIDGED) We analyze the X-ray properties of a sample of local and high redshift galaxy clusters extracted from a large cosmological hydrodynamical simulation. This simulation has been realized using the Tree+SPH code GADGET-2 for a…

天体物理学 · 物理学 2009-11-10 S. Ettori , S. Borgani , L. Moscardini , G. Murante , P. Tozzi , A. Diaferio , K. Dolag , V. Springel , G. Tormen , L. Tornatore

Aims: In this work we aim to investigate the late evolution of ETGs, both observationally and theoretically, by focusing on the stellar mass density profile inside a fixed aperture, within $10 ~\rm{kpc}$ from the galaxy center. Methods: We…

星系天体物理 · 物理学 2025-09-18 Rongfu Liu , Alessandro Sonnenfeld , Carlo Nipoti , Rui Li

We present an analysis of stellar populations and evolutionary history of galaxies in three similarly rich galaxy clusters MS0451.6-0305 (z=0.54), RXJ0152.7-1357 (z=0.83), and RXJ1226.9+3332 (z=0.89); based on high S/N ground-based optical…

宇宙学与河外天体物理 · 物理学 2013-02-28 Inger Jorgensen , Kristin Chiboucas

The fundamental plane (FP) has an intrinsic scatter that can not be explained purely by observational errors. Using recently available age estimates for nearby early type galaxies, we show that a galaxy's position relative to the FP depends…

天体物理学 · 物理学 2009-10-30 Duncan Forbes , Trevor Ponman , Richard Brown

We present the radial gas-phase, mass-weighted metallicity profiles and gradients of the TNG50 star-forming galaxy population measured at redshifts $z=$ 0--3. We investigate the redshift evolution of gradients and examine relations between…

We study the tidal evolution of galaxies in the most massive cluster of the IllustrisTNG-100 simulation. For the purpose of this work we select 112 galaxies with the largest stellar masses at present and follow their properties in time.…

星系天体物理 · 物理学 2020-07-01 Ewa L. Lokas

We study the photometric and spectral properties of 39320 early-type galaxies within the SDSS, as a function of both local environment and redshift. The distance to the nearest cluster of galaxies and the distance to the 10th nearest…

天体物理学 · 物理学 2008-11-26 M. Bernardi , R. C. Nichol , R. K. Sheth , C. J. Miller , J. Brinkmann

The evolution of the galaxy stellar mass--star formation rate relationship (M*-SFR) provides key constraints on the stellar mass assembly histories of galaxies. For star-forming galaxies, M*-SFR is observed to be fairly tight with a slope…

天体物理学 · 物理学 2010-11-23 Romeel Davé

We use high-resolution K-band VLT/HAWK-I imaging over 0.25 square degrees to study the structural evolution of massive early-type galaxies since z~1. Mass-selected samples, complete down to log(M/M_sun)~10.7 such that `typical' L* galaxies…

宇宙学与河外天体物理 · 物理学 2012-12-20 Yu-Yen Chang , Arjen van der Wel , Hans-Walter Rix , Stijn Wuyts , Stefano Zibetti , Balasubramanian Ramkumar , Bradford P. Holden

We present new Keck spectroscopy of early-type galaxies in three galaxy clusters at z~0.5. We focus on the fundamental plane (FP) relation, and combine the kinematics with structural parameters determined from HST images. The galaxies obey…

天体物理学 · 物理学 2008-11-26 Pieter G. van Dokkum , Roeland P. van der Marel