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Related papers: Bar effects on central star formation and AGN acti…

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Bars are fundamental structures in disc galaxies, although their role in galaxy evolution is still not fully known. This study investigates the effect of the presence of bars on the environmental dependence of disc galaxies' properties…

Astrophysics of Galaxies · Physics 2025-11-12 Pius Privatus , Umananda Dev Goswami

While bars are common in disk galaxies, their formation conditions are not well understood. We use $N$-body simulations to study bar formation and evolution in isolated galaxies consisting of a stellar disk, a classical bulge, and a dark…

Astrophysics of Galaxies · Physics 2023-01-25 Dajeong Jang , Woong-Tae Kim

We have performed a multi-transition CO study of the centers of seven double-barred galaxies that exhibit a variety of molecular gas morphologies to determine if the molecular gas properties are correlated with the nuclear morphology and…

Astrophysics · Physics 2009-11-07 Glen Petitpas , Christine Wilson

We address the relation between star formation and AGN activity in a sample of 231 nearby ($0.0002<z<0.0358$) early type galaxies by carrying out a multi-wavelength study using archival observations in the UV, IR and radio. Our results…

Astrophysics of Galaxies · Physics 2016-03-09 Sravani Vaddi , Christopher P. ODea , Stefi A. Baum , Samantha Whitmore , Rabeea Ahmed , Katherine Pierce , Sara Leary

We investigate the relation between AGN and star formation (SF) activity at $0.5 < z < 3$ by analyzing 898 galaxies with X-ray luminous AGN ($L_X > 10^{44}$ erg s$^{-1}$) and a large comparison sample of $\sim 320,000$ galaxies without…

In dense clusters, higher densities at early epochs as well as physical processes, such as ram pressure stripping and tidal interactions become important, and can have direct consequences for the evolution of bars and their host disks. To…

Nuclear starbursts and AGN activity are the main heating processes in luminous infrared galaxies (LIRGs) and their relationship is fundamental to understand galaxy evolution. In this paper, we study the star-formation and AGN activity of a…

Motivated by theoretical expectations that Nuclear Star Clusters (NSCs) in galactic centers may provide a favorable environment for super-massive black holes to form and/or efficiently grow, we set out to measure the fraction of nearby…

High Energy Astrophysical Phenomena · Physics 2017-05-31 Adi Foord , Elena Gallo , Edmund Hodges-Kluck , Brendan P. Miller , Vivienne F. Baldassare , Kayhan Gultekin , Oleg Y. Gnedin

AGN feedback stands for the dramatic impact that a SMBH can make on its environment. It has become an essential element of models that describe the formation and evolution of baryons in massive virialized halos. The baryons' radiative…

High Energy Astrophysical Phenomena · Physics 2023-04-05 J. Hlavacek-Larrondo , Y. Li , E. Churazov

We investigate the properties of massive, dense clouds formed in a barred galaxy and their possible relation to star formation, performing a two-dimensional hydrodynamical simulation with the gravitational potential obtained from the 2Mass…

Astrophysics of Galaxies · Physics 2015-06-05 M. Nimori , A. Habe , K. Sorai , Y. Watanabe , A. Hirota , D. Namekata

In order to understand the physical mechanisms at work during the formation of massive early-type galaxies, we performed six zoomed hydrodynamical cosmological simulations of halos in the mass range 4.3 10^12 < M_vir < 8.0 10^13 M_sun at…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Yohan Dubois , Raphaël Gavazzi , Sébastien Peirani , Joseph Silk

We present an analysis of the optical spectroscopy of 58 stars in the Galactic plane at $l=27$\arcdeg, where a prominent excess in the flux distribution and star counts have been observed in several spectral regions, in particular in the…

Astrophysics · Physics 2009-10-30 F. Garzon , M. Lopez-Corredoira , P. Hammersley , T. J. Mahoney , X. Calbet , J. E. Beckman

Despite the increasing number of Gravitational Wave (GW) detections, the astrophysical origin of Binary Black Hole (BBH) mergers remains elusive. A promising formation channel for BBHs is inside accretion discs around supermassive black…

High Energy Astrophysical Phenomena · Physics 2023-10-25 Niccolò Veronesi , Elena Maria Rossi , Sjoert van Velzen

I will review the tips learned from panchromatic modeling of active galactic nuclei (AGNs), based on our recent work to study the relationship between AGN and star formation (SF). Several AGN SED models are compared, and signifficant AGN…

Astrophysics of Galaxies · Physics 2020-06-17 Y. Sophia Dai

We aim to study the effect of environment on the presence and fuelling of Active Galactic Nuclei (AGN) in massive galaxy clusters. We explore the use of different AGN detection techniques with the goal of selecting AGN across a broad range…

Astrophysics of Galaxies · Physics 2015-06-05 Alison J. Klesman , Vicki L. Sarajedini

We analyse the properties of strongly barred disc galaxies using the TNG100 simulation, a cosmological hydrodynamical realisation of the IllustrisTNG suite. We identify 270 disc galaxies at $z=0$ in the stellar mass range…

We investigate the differences in the stellar population properties, the structure, and the environment between massive compact star-forming galaxies (cSFGs) with or without active galactic nucleus (AGN) at $2<z<3$ in the five…

Astrophysics of Galaxies · Physics 2022-08-10 Shiying Lu , Yizhou Gu , Guanwen Fang , Qirong Yuan , Min Bao , Xiaotong Guo

When bars form within galaxy formation simulations in the standard cosmological context, dynamical friction with dark matter (DM) causes them to rotate rather slowly. However, almost all observed galactic bars are fast in terms of the ratio…

Astrophysics of Galaxies · Physics 2021-03-30 Mahmood Roshan , Indranil Banik , Neda Ghafourian , Ingo Thies , Benoit Famaey , Elena Asencio , Pavel Kroupa

Although more than two-thirds of star-forming disk galaxies in the local universe are barred, some galaxies remain un-barred, occupying the upper half of the Hubble tuning fork diagram. Numerical simulations almost always produce bars…

Astrophysics of Galaxies · Physics 2018-05-16 Kanak Saha , Bruce Elmegreen

Feedback processes from active galactic nuclei (AGN) are thought to play a crucial role in regulating star formation in massive galaxies. Previous studies using \textit{Herschel} have resulted in conflicting conclusions as to whether star…

Astrophysics of Galaxies · Physics 2019-04-24 Joanna Ramasawmy , Jason Stevens , Garreth Martin , James E. Geach
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