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How galaxies quench star-formation? 

Active galactic nucleus
Brightest cluster galaxy
Galaxy cluster
Best insight from top research papers

Galaxies quench star formation through various mechanisms. One model suggests that low-luminosity active galactic nuclei (LLAGN) feedback can play a role in this process. LLAGN produce thermal winds from a hot accretion flow, which deposit energy on the host galaxy, heating the galactic gas and suppressing star formation . Observations of the massive cluster A2142 show that star formation activity decreases from the outer region to the center of the cluster, indicating that environmental factors can also contribute to quenching . Additionally, machine learning techniques applied to cosmological simulations and observational data suggest that black hole mass is a key parameter in central galaxy quenching, while black hole accretion rate has little predictive power . The stellar gravitational potential is also found to be important in predicting quenching . These findings highlight the complex interplay between galactic and environmental factors in the quenching of star formation.

Answers from top 5 papers

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Papers (5)Insight
Open access•Journal Article•DOI
The Fundamental Signature of Star Formation Quenching from AGN Feedback: A Critical Dependence of Quiescence on Supermassive Black Hole Mass, Not Accretion Rate
Asa F. L. Bluck, Joanna M Piotrowska, Roberto Maiolino 
09 Jan 2023-The astrophysical journal
2 Citations
The paper identifies the black hole mass as the most predictive parameter for star formation quenching in galaxies, rather than the accretion rate or AGN luminosity.
Open access•Posted Content•DOI
The fundamental signature of star formation quenching from AGN feedback: A critical dependence of quiescence on supermassive black hole mass not accretion rate
09 Jan 2023
The paper discusses the quenching of star formation in galaxies through the influence of supermassive black hole mass, rather than black hole accretion rate or AGN luminosity.
Open access•Journal Article•DOI
The Way to Quench: Galaxy Evolution in A2142
Heng Yu, Antonaldo Diaferio, Jubee Sohn 
29 May 2023-Research in Astronomy and Astrophysics
The paper explains that star formation activity in galaxies is progressively inhibited as they move closer to the center of the massive cluster A2142. The dense intracluster medium within the cluster inhibits star formation activity.
Quenching star formation with low-luminosity AGN winds
Ivan Carlos de Almeida, Rodrigo Nemmen, Rogemar A. Riffel 
01 Mar 2023
The paper discusses a model where low-luminosity active galactic nuclei (LLAGN) produce thermal winds that deposit energy on the host galaxy, heating the gas and quenching star formation.
Open access•Posted Content•DOI
Quenching star formation with low-luminosity AGN winds
01 Mar 2023
The paper discusses a model where low-luminosity active galactic nuclei (LLAGN) produce thermal winds that deposit energy on the host galaxy, heating the gas and quenching star formation.

Related Questions

How are galaxies formed?5 answersGalaxies are formed through various processes. One model proposes that galaxy formation is catalyzed by the collision of particles from black holes, such as gravastars. Another model suggests that the structure of a galaxy is formed through energy circulation and the release of stellar seeds. Computer simulations have shown that the interaction between galaxies, including near collisions, can result in tidal disturbances and trigger the collapse of interstellar clouds, leading to the formation of irregular or peculiar galaxies. The standard model of structure formation states that galaxies form in the center of dark matter haloes and grow through continuous accretion of gaseous material from the intergalactic medium. The accretion of gaseous material onto the stellar disc plays a fundamental role in its evolution, generating gas flows within the disc.
How does quenching effect inconel 718?4 answersQuenching has various effects on Inconel 718. It can lead to residual stress reduction, with the rate of reduction increasing with higher pretreatment temperatures. Quenching also promotes the nucleation and precipitation of the γ" phase, which contributes to an increase in yield strength. Additionally, quenching can affect the microstructure of the alloy, with the fraction of high-angle grain boundaries decreasing and the fraction of low-angle grain boundaries increasing with increasing pre-stretch level. However, excessive pre-stretching can result in the entanglement of internal dislocations, leading to coarsening and a reduction in the volume fraction of precipitates, which in turn reduces the product of strength and elongation. Overall, the effects of quenching on Inconel 718 depend on various factors such as pretreatment temperature and pre-stretch level.
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