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相关论文: Effect of Bars on Evolution of SDSS Spiral Galaxie…

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We quantify the relative role of galaxy environment and bar presence on AGN triggering in face-on spiral galaxies using a volume-limited sample with $0.02 < z < 0.055$, $M_r < 19.5$, and $\sigma > 70 \rm ms s^{-1}$ selected from SDSS Data…

星系天体物理 · 物理学 2020-10-07 Minbae Kim , Yun-Young Choi

Galactic bars are often suspected to be a channel of gas inflow to the galactic center and trigger central star formation and active galactic nuclei (AGN) activity. However, the current status on this issue based on empirical studies is…

星系天体物理 · 物理学 2015-06-03 Seulhee Oh , Kyuseok Oh , Sukyoung K. Yi

We aim to unravel the interplay between bars, star formation (SF), and active galactic nuclei (AGNs) in barred galaxies. To this end, we utilize the SDSS DR12 to select a sample of nearby (0.02 < z < 0.06) disk galaxies that are suitable…

星系天体物理 · 物理学 2023-06-07 Woong-Bae G. Zee , Sanjaya Paudel , Jun-Sung Moon , Suk-Jin Yoon

Galactic bars are the most important driver of secular evolution in galaxies. They can efficiently drive gas into the central kiloparsec of galaxies, thus feed circumnuclear starbursts, and possibly help to fuel AGN. The connection between…

宇宙学与河外天体物理 · 物理学 2009-10-22 Lei Hao , Shardha Jogee , Fabio D. Barazza , Irina Marinova , Juntai Shen

The high luminosity displayed by an active galactic nucleus (AGN) requires that gas be transported to the centre of the galaxy by some mechanism. Bar-driven processes are often pointed out in this context and a number of studies have…

星系天体物理 · 物理学 2022-05-11 Luiz A. Silva-Lima , Lucimara P. Martins , Paula R. T. Coelho , Dimitri A. Gadotti

Bars are considered an efficient mechanism for transporting gas toward the central regions of galaxies, potentially enhancing nuclear activity. However, the extent to which bars influence active galactic nuclei (AGNs), and whether their…

星系天体物理 · 物理学 2025-06-02 V. Marels , V. Mesa , M. Jaque Arancibia , S. Alonso , G. Coldwell , G. Damke , V. Contreras Rojas

The role of large-scale bars in the fuelling of active galactic nuclei (AGN) is still debated, even as evidence mounts that black hole growth in the absence of galaxy mergers cumulatively dominated and may substantially influence disc…

To investigate the role of bars in the chemical evolution of isolated disc galaxies, we performed a series of 39 gas dynamical simulations of isolated barred and unbarred galaxies with various masses, initial gas fractions, and AGN feedback…

星系天体物理 · 物理学 2018-05-02 Hugo Martel , Christian Carles , Fidèle Robichaud , Sara L. Ellison , David J. Williamson

Stellar bars are a common feature in massive disc galaxies. On a theoretical ground, the response of gas to a bar is generally thought to cause nuclear starbursts and, possibly, AGN activity once the perturbed gas reaches the central…

星系天体物理 · 物理学 2015-10-28 R. Fanali , M. Dotti , D. Fiacconi , F. Haardt

We investigate the role of galactic bars in fuelling and triggering Active Galactic Nucleus (AGN) in disc galaxies up to $z\sim 0.8$. We utilise a Deep Learning model, fine-tuned on Galaxy Zoo volunteer classifications, to identify…

星系天体物理 · 物理学 2026-03-04 A. La Marca , M. T. Nardone , L. Wang , B. Margalef-Bentabol , S. Kruk , S. C. Trager

We investigate the connection between the presence of bars and AGN activity, using a volume-limited sample of $\sim$9,000 late-type galaxies with axis ratio $b/a>0.6$ and $M_{r} < -19.5+5{\rm log}h$ at low redshift ($0.02\le z\lesssim…

宇宙学与河外天体物理 · 物理学 2015-06-04 Gwang-Ho Lee , Jong-Hak Woo , Myung Gyoon Lee , Ho Seong Hwang , Jong Chul Lee , Jubee Sohn , Jong Hwan Lee

Bars play an integral role in regulating star formation (SF) in spiral galaxies, from triggering central starbursts to driving quenching. The diverse SF morphologies observed in local barred galaxies reflect different evolutionary stages of…

星系天体物理 · 物理学 2026-04-17 D Renu , Smitha Subramanian , Koshy George

Aims. With the aim of performing a suitable comparison of the internal process of galactic bars with respect to the external effect of interactions on driving gas toward the inner most region of the galaxies, we explored the efficiency of…

星系天体物理 · 物理学 2018-10-31 Sol Alonso , Georgina Coldwell , Fernanda Duplancic , Valeria Mesa , Diego G. Lambas

We explore properties of barred active spiral galaxies in groups selected from the SDSS-DR7, with the aim of assessing the effects of bars on AGN and the role of the high density environment. We identified barred active galaxies that reside…

星系天体物理 · 物理学 2015-06-23 Sol Alonso , Georgina Coldwell , Diego García Lambas

We present empirical constraints on the influence of stellar bars on the fueling of active galactic nuclei (AGNs) out to z=0.84 using a sample of X-ray-selected AGNs hosted in luminous non-interacting face-on and moderately inclined disk…

星系天体物理 · 物理学 2015-06-22 Mauricio Cisternas , Kartik Sheth , Mara Salvato , Johan H. Knapen , Francesca Civano , Paola Santini

We present a statistical analysis of the connections between galactic bars, star formation, and active galactic nucleus (AGN) activity using 33,201 disk galaxies (0.01 < z < 0.05) from DESI DR1 cross-matched with Galaxy Zoo DESI. Based on…

星系天体物理 · 物理学 2026-05-07 Jianfei Liu , Zhimin Zhou

We study the influence of the presence of a strong bar in disc galaxies which host an active galactic nucleus (AGN). Using data from the Sloan Digital Sky Survey and morphological classifications from the Galaxy Zoo 2 project, we create a…

We measured the Concentration (C) index of H\alpha and CO (J = 2-1) in 17 nearby star-forming galaxies from the PHANGS survey. We have found four barred spiral galaxies with a C(H\alpha)/C(CO) ratio of ~ 0.3-0.4, while the other 13 galaxies…

We present a numerical study of the impact of AGN accretion and feedback on the star formation history of barred disc galaxies. Our goal is to determine whether the effect of feedback is positive (enhanced star formation) or negative…

星系天体物理 · 物理学 2017-06-28 Fidèle Robichaud , David Williamson , Hugo Martel , Daisuke Kawata , Sara L. Ellison

Stellar bars are common morphological structures in the local Universe; according to optical and NIR surveys, they are present in about two-thirds of disc galaxies. These elongated structures are also believed to play a crucial role in…

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