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相关论文: Green Valley galaxies as a transition population i…

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Green valley galaxies represent the population that is likely to transition from the star-forming to the quiescent phases. To investigate the role of the environment in quenching star formation, we use the wide-field data from the Hyper…

We analyze the SDSS data to classify the galaxies based on their colour using a fuzzy set-theoretic method and quantify their environments using the local dimension. We find that the fraction of the green galaxies does not depend on the…

星系天体物理 · 物理学 2021-07-01 Apashanka Das , Biswajit Pandey , Suman Sarkar

To investigate the effects of environment in the quenching phase, we study the empirical relations for green valley (GV) galaxies between overdensity and other physical properties (i.e., effective radius $r_{\rm e}$, S\'{e}rsic indices $n$,…

星系天体物理 · 物理学 2022-09-07 Wenjun Chang , Guanwen Fang , Yizhou Gu , Zesen Lin , Shiying Lu , Xu Kong

Green valley (GV) galaxies are thought to represent a transitional population between star-forming and quiescent systems. However, their spatial distribution relative to galaxy systems remains unclear, particularly in relation to the…

星系天体物理 · 物理学 2026-04-28 Selene Levis , Facundo Rodriguez , Héctor J. Martínez , Valeria Coenda , Hernán Muriel

We measure the rate of environmentally-driven star formation quenching in galaxies at $z\sim 1$, using eleven massive ($M\approx 2\times10^{14}\,\mathrm{M}_\odot$) galaxy clusters spanning a redshift range $1.0<z<1.4$ from the GOGREEN…

We present a research of morphologies, spectra and environments of $\approx$ 2350 "green valley" galaxies at $0.2<z<1.0$ in the COSMOS field. The bimodality of dust-corrected \nuvr\ color is used to define "green valley" (thereafter, GV),…

星系天体物理 · 物理学 2015-06-17 Zhizheng Pan , Xu Kong , Lulu Fan

$\require{mediawiki-texvc}$The green valley (GV) represents an important transitional state from actively star-forming galaxies to passively evolving systems. Its traditional definition, based on colour, rests on a number of assumptions…

星系天体物理 · 物理学 2020-05-20 James Angthopo , Ignacio Ferreras , Joseph Silk

Galaxies infalling into clusters undergo both star-formation quenching and morphological transformation due to environmental effects. We investigate these processes and their timescales using a local sample of 20,191 cluster and 11,674…

The evolution of galaxies is significantly influenced by the environments they inhabit. While high-density regions, such as clusters of galaxies have been widely studied, the dynamics and quenching processes in intermediate environments…

We study how half-mass radii, central mass densities ($\Sigma_1$), and color gradients change as galaxies evolve. We separate $\sim7,000$ galaxies into sixteen groups with similar spectral shapes; each group represents a different…

星系天体物理 · 物理学 2021-07-12 Katherine A. Suess , Mariska Kriek , Sedona H. Price , Guillermo Barro

We present quantitative morphologies of ~300 galaxies in the optically-defined green valley at 0.4<z<1.2, in order to constrain the mechanism(s) responsible for quenching star formation in the bulk of this population. The sample is selected…

宇宙学与河外天体物理 · 物理学 2015-05-27 Alexander J. Mendez , Alison L. Coil , Jennifer Lotz , Samir Salim , John Moustakas , Luc Simard

We use SDSS+\textit{GALEX}+Galaxy Zoo data to study the quenching of star formation in low-redshift galaxies. We show that the green valley between the blue cloud of star-forming galaxies and the red sequence of quiescent galaxies in the…

We explore the constraints that can be placed on the evolutionary timescales for typical low redshift galaxies evolving from the blue cloud through the green valley and onto the red sequence. We utilise galaxies from the GAMA survey with…

The distribution of galaxies has been studied to show the difference between the blue cloud and red sequence and to define the green valley region. However, there are still many open questions regarding the importance of the green valley…

星系天体物理 · 物理学 2021-07-14 Beatrice Nyiransengiyumva , Mirjana Povic , Pheneas Nkundabakura , Antoine Mahoro

The "green valley" is a wide region separating the blue and the red peaks in the ultraviolet-optical color magnitude diagram, first revealed using GALEX UV photometry. The term was coined by Christopher Martin in 2005. Green valley…

星系天体物理 · 物理学 2015-01-12 Samir Salim

Exploiting a mass complete (M_*>10^(10.25)M_sun) sample at 0.03<z<0.11 drawn from the Padova Millennium Galaxy Group Catalog (PM2GC), we use the (U-B)_rf color and morphologies to characterize galaxies, in particular those that show signs…

We measure the colour evolution and quenching time-scales of $z=1.0-1.8$ galaxies across the green valley. We derive rest-frame $NUVrK$ colours and select blue-cloud, green-valley and red-sequence galaxies from the spectral energy…

We investigate the evolutionary pathways of green valley (GV) galaxies drawn from the SDSS-IV/MaNGA survey. The GV sample is divided into fast- and slow-rotating galaxies based on stellar spin, and their stellar and gas-phase metallicities…

星系天体物理 · 物理学 2026-04-29 Shuang Zhou , Angela Iovino , Marcella Longhetti , Francesco La Barbera , Luca Costantin

The distribution of galaxies on a colour-magnitude diagram reveals a bimodality, featuring a passively evolving red sequence and a star-forming blue cloud. The region between these two, the Green Valley (GV), represents a fundamental…

星系天体物理 · 物理学 2020-05-07 James Angthopo , Ignacio Ferreras , Joseph Silk

The bimodality in galaxy properties has been observed at low and high redshift, with a clear distinction between star-forming galaxies in the blue cloud and passively evolving objects in the red sequence; the absence of galaxies with…

宇宙学与河外天体物理 · 物理学 2015-06-11 Thiago S. Gonçalves , D. Christopher Martin , Karín Menéndez-Delmestre , Ted Wyder , Anton Koekemoer
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