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We investigate the roles of two classes of quenching mechanisms for central and satellite galaxies in the SDSS ($z<0.075$): those involving the halo and those involving the formation of a compact centre. For central galaxies with inner…

Astrophysics of Galaxies · Physics 2015-01-19 Joanna Woo , Avishai Dekel , S. M. Faber , David C. Koo

We present an analysis of star formation and quenching in the SDSS-IV MaNGA-DR15, utilising over 5 million spaxels from $\sim$3500 local galaxies. We estimate star formation rate surface densities ($\Sigma_{\rm SFR}$) via dust corrected…

We exploit the pioneering cosmological hydrodynamical simulation, EAGLE, to study how the connection between halo mass (M_halo), stellar mass (M*) and star-formation rate (SFR) evolves across redshift. Using Principal Component Analysis we…

Astrophysics of Galaxies · Physics 2018-07-11 R. K. Cochrane , P. N Best

We use the semi-analytic model of galaxy formation SAG to study the relevance of mass and environmental quenching on satellite galaxies. We find that environmental processes dominate the star formation (SF) quenching of low-mass satellites…

Astrophysics of Galaxies · Physics 2018-12-05 Sofía A. Cora , Tomás Hough , Cristian A. Vega-Martínez , Álvaro Orsi

Tidal interactions between galaxies can trigger star formation, which contributes to the global star formation rate density of the universe and could be a factor in the transformation of blue, star-forming galaxies to red, quiescent…

Recent observations of the high-redshift Universe, particularly with JWST, have revealed a population of quenched galaxies that challenges current galaxy formation models, which systematically underpredict their abundance. This discrepancy…

Astrophysics of Galaxies · Physics 2026-05-06 Aleyna Döven , Mohammadreza Ayromlou , Cristiano Porciani

We used the time since infall (TSI) of galaxies, obtained from the Yonsei Zoom-in Cluster Simulation, and the star formation rate (SFR) from the Sloan Digital Sky Survey (SDSS) Data Release 10 to study how quickly star formation of disk…

Astrophysics of Galaxies · Physics 2020-03-25 Jinsu Rhee , Rory Smith , Hoseung Choi , Emanuele Contini , S. Lyla Jung , San Han , Sukyoung K. Yi

Interaction between galaxies play a pivotal role in their evolution. Ongoing star formation in spiral galaxies can be affected by these processes. We select a sample of interacting galaxies in field environments at various interaction…

Galaxy surveys have suggested that rapid and sustained decrease in the star-formation rate, "quenching", in massive disk galaxies is frequently related to the presence of a bar. Optical and near-IR observations reveal that nearly 60% of…

Astrophysics of Galaxies · Physics 2018-01-10 S. Khoperskov , M. Haywood , P. Di Matteo , M. D. Lehnert , F. Combes

We study how star formation (SF) is quenched in low-redshift disk galaxies with integral-field spectroscopy. We select 131 face-on spiral galaxies with stellar mass greater than $\rm 3\times10^{10}M_\odot$, and with spatially resolved…

Astrophysics of Galaxies · Physics 2019-01-03 Kexin Guo , Yingjie Peng , Li Shao , Hai Fu , Barbara Catinella , Luca Cortese , Feng Yuan , Renbin Yan , Chengpeng Zhang , Jing Dou

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…

Astrophysics of Galaxies · Physics 2021-07-01 Apashanka Das , Biswajit Pandey , Suman Sarkar

Galaxy mergers are traditionally one of the favoured mechanisms for quenching star formation. To test this paradigm in the context of modern cosmological simulations, we use the IllustrisTNG simulation to investigate the impact of…

Astrophysics of Galaxies · Physics 2021-04-21 Salvatore Quai , Maan H. Hani , Sara L. Ellison , David R. Patton , Joanna Woo

Understanding the processes that transform star-forming galaxies into quiescent ones is key to unraveling the role of environment in galaxy evolution. We present measurements of the luminosity functions (LFs) and stellar mass functions…

In this study, we use the luminous volume-limited samples obtained from the twelfth release of Sloan Digital Sky Survey data and mergers from Galaxy Zoo Project to investigate the influence of group richness in shaping galaxy properties'…

Astrophysics of Galaxies · Physics 2025-09-26 Pius Privatus , Umananda Dev Goswami

We study the dependence of star-formation quenching on galaxy mass and environment, in the SDSS (z~0.1) and the AEGIS (z~1). It is crucial that we define quenching by low star-formation rate rather than by red colour, given that one third…

To address the problem concerning the early formation of stars in massive galaxies, we present the results of a semi-analytic model of galaxy formation which includes a physical description of starbursts triggered by galaxy interactions.…

Astrophysics · Physics 2009-11-10 N. Menci , A. Cavaliere , A. Fontana , E. Giallongo , F. Poli , V. Vittorini

We study the properties of 30 spectroscopically-identified pairs of galaxies observed during the peak epoch of star formation in the universe. These systems are drawn from the MOSFIRE Deep Evolution Field (MOSDEF) Survey at $1.4 \leq z \leq…

We explore the radial distribution of star formation in galaxies in the SAMI Galaxy Survey as a function of their local group environment. Using a sample of galaxies in groups (with halo masses less than $ \simeq 10^{14} \,…

We conduct an environmental analysis around 167 star-forming galaxies (SFGs) detected by the Star Formation Across Cosmic Time (SFACT) survey over the redshift range 0.129 $\leq$ z $\leq$ 0.500. We use three environmental estimators to…