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相关论文: COSMOS-Web galaxy groups: Evolution of red sequenc…

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We present results from modeling the optical spectra of a large sample of quiescent galaxies between 0.1 < z < 0.7 from the Sloan Digital Sky Survey (SDSS) and the AGN and Galaxy Evolution Survey (AGES). We examine how the stellar ages and…

A rare population of massive disk-dominated quiescent galaxies has recently drawn much attention, which intrudes the red sequence population without destroying the underlying stellar disks. In this study, we have carefully identified 48 red…

星系天体物理 · 物理学 2024-07-25 Qifan Cui , Pinsong Zhao , Fengshan Liu

We study the dust content of massive ($\log(M_*/M_{\odot})\geq10.8$) quiescent galaxies (QGs) at redshifts $z=0.5-3$ to place constraints on the evolution of their cold interstellar medium (ISM) and thereby obtain insights into the…

星系天体物理 · 物理学 2025-10-22 Sylvia Adscheid , Benjamin Magnelli , Laure Ciesla , Daizhong Liu , Eva Schinnerer , Frank Bertoldi

We study the evolution of quiescent galaxies at 0.5<z<2.5 as a function of stellar mass, using very deep NIR imaging data taken with the Multi-Object Infrared Camera and Spectrograph on the Subaru Telescope in the GOODS-North region. The…

宇宙学与河外天体物理 · 物理学 2015-05-20 Masaru Kajisawa , Takashi Ichikawa , Tomohiro Yoshikawa , Toru Yamada , Masato Onodera , Masayuki Akiyama , Ichi Tanaka

We have carried out a stacking analysis with the COSMOS-Web catalogue on one of the deepest ever SCUBA-2 images at 850 microns, allowing us to estimate the mean submillimetre flux density for samples of galaxies split by stellar mass and…

星系天体物理 · 物理学 2026-05-21 Stephen Eales , Matthew Smith , Tom Bakx , Jordan D'Silva , Feng-Yuan Frey Liu , Aparna Venkateshwaran

We use Hectospec mounted on the 6.5-meter MMT to carry out a redshift survey of red ($r-i>0.2$, $g-r>0.8$, $r<21.3$) galaxies in the COSMOS field to measure the environments of massive compact quiescent galaxies at intermediate redshift.…

星系天体物理 · 物理学 2015-12-23 Ivana Damjanov , H. Jabran Zahid , Margaret J. Geller , Ho Seong Hwang

We present results on the rest-frame $H$-band luminosity functions (LF) of red sequence galaxies in seven clusters at 1.0 < z < 1.3 from the Gemini Observations of Galaxies in Rich Early Environments Survey (GOGREEN). Using deep GMOS-z' and…

We measure stellar masses and structural parameters for 5,500 quiescent and 20,000 star-forming galaxies at 0.3<z\leq1.5 in the Newfirm Medium Band Survey COSMOS and UKIDSS UDS fields. We combine these measurements to infer velocity…

宇宙学与河外天体物理 · 物理学 2015-06-11 Rachel Bezanson , Pieter van Dokkum , Marijn Franx

One key problem in astrophysics is understanding how and why galaxies switch off their star formation, building the quiescent population that we observe in the local Universe. From the GAMA and VIPERS surveys, we use spectroscopic indices…

We investigate the evolution of the optical and near-infrared colour-magnitude relation in an homogeneous sample of massive clusters from z = 1 to the present epoch. By comparing deep Hubble Space Telescope ACS imaging of X-ray selected…

宇宙学与河外天体物理 · 物理学 2012-03-15 J. P. Stott , K. A. Pimbblet , A. C. Edge , G. P. Smith , J. L. Wardlow

(ABRIDGED) Motivated by the desire to reliably and automatically classify structure of thousands of COSMOS galaxies, we present ZEST, the Zurich Estimator of Structural Types. To classify galaxy structure, ZEST uses: (i) Five non-parametric…

We search for high redshift ($z\sim$1-2) galaxy clusters using low luminosity radio galaxies (FR~I) as beacons and our newly developed Poisson Probability Method (PPM) based on photometric redshift information and galaxy number counts. We…

星系天体物理 · 物理学 2015-06-22 Gianluca Castignani , Marco Chiaberge , Annalisa Celotti , Colin Norman , Gianfranco De Zotti

Understanding the mechanisms that lead dense environments to host galaxies with redder colors, more spheroidal morphologies, and lower star formation rates than field populations remains an important problem. As most candidate processes…

High-redshift galaxy clusters, unlike local counterparts, show diverse star formation activities. However, it is still unclear what keeps some of the high-redshift clusters active in star formation. To address this issue, we performed a…

星系天体物理 · 物理学 2019-10-25 Seong-Kook Lee , Myungshin Im , Minhee Hyun , Bomi Park , Jae-Woo Kim , Dohyeong Kim , Yongjung Kim

Accurately distinguishing between quiescent and star-forming galaxies is essential for understanding galaxy evolution. Traditional methods, such as spectral energy distribution (SED) fitting, can be computationally expensive and may…

We investigate the stellar populations of 25 massive, galaxies ($\log[M_\ast/M_\odot] \geq 10.9$) at $1.5 < z < 2$ using data obtained with the K-band Multi-Object Spectrograph (KMOS) on the ESO VLT. Targets were selected to be quiescent…

How galaxies form, assemble, and cease their star-formation is a central question within the modern landscape of galaxy evolution studies. These processes are indelibly imprinted on the galaxy stellar mass function (SMF). We present…

We present a detailed analysis of a large sample of spectroscopically confirmed ultra-massive quiescent galaxies (${\rm{log}}(M_{\ast}/M_{\odot})\sim11.5$) at $z\gtrsim2$. This sample comprises 15 galaxies selected in the COSMOS and UDS…

The process that quenched star formation in galaxies at intermediate and high redshift is still the subject of considerable debate. One way to investigate this puzzling issue is to study the number density of quiescent galaxies at z~2, and…

We propose a general framework leveraging the halo-galaxy connection to link galaxies observed at different redshift in a statistical way, and use the link to infer the redshift evolution of the galaxy population. Our tests based on…

星系天体物理 · 物理学 2023-02-09 Kai Wang , Houjun Mo , Cheng Li , Yangyao Chen