English
Related papers

Related papers: PRIMUS: The relationship between Star formation an…

200 papers

Emission from active galactic nuclei (AGNs) is known to play an important role in the evolution of many galaxies including luminous and ultraluminous systems (U/LIRGs), as well as merging systems. However, the extent, duration, and exact…

We study the connection between active galactic nuclei (AGN) and their host galaxies through cosmic time in the large-scale cosmological IllustrisTNG simulations. We first compare BH properties, i.e. the hard X-ray BH luminosity function,…

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

To understand the physical origin of the close connection between supermassive black holes and their host galaxies, it is vital to investigate star formation properties in active galaxies. Using a large dataset of nearby type 1 active…

Astrophysics of Galaxies · Physics 2019-05-08 Minjin Kim , Luis C. Ho

We present estimates of black hole accretion rates and nuclear, extended, and total star-formation rates for a complete sample of Seyfert galaxies. Using data from the Spitzer Space Telescope, we measure the active galactic nucleus (AGN)…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-19 Aleksandar M. Diamond-Stanic , George H. Rieke

The unified model of active galactic nuclei (AGNs) proposes that different AGN optical spectral types are caused by different viewing angles with respect to an obscuring 'torus'. Therefore, this model predicts that type 1 and type 2 AGNs…

Astrophysics of Galaxies · Physics 2019-06-12 Fan Zou , Guang Yang , William N. Brandt , Yongquan Xue

We investigate the star formation activity and black hole scaling relations in a sample of 1451 AGN hosted by dwarf galaxies at redshift 0.5 to 0.9, drawn from the VIPERS survey. The sample comprises Seyferts and LINERs identified through…

Astrophysics of Galaxies · Physics 2025-10-01 G. Mountrichas , M. Siudek , F. J. Carrera

We have selected a sample of X-ray emitting active galactic nuclei (AGNs) in low-mass host galaxies (5e9-2e10 Msun) out to z~1. By comparing to AGNs in more massive hosts, we have found that the AGN spatial number density and the fraction…

Astrophysics · Physics 2009-11-13 Yong Shi , George Rieke , Jennifer Donley , Michael Cooper , Christopher Willmer , Evan Kirby

Nuclear starbursts may contribute to the obscuration of active galactic nuclei (AGNs). The predicted star formation rates are modest, and, for the obscured AGNs that form the X-ray background at z < 1, the associated faint radio emission…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 C. M. Pierce , D. R. Ballantyne , R. J. Ivison

We explored a sample of 545 local galaxies using data from the 3XMM-DR7 and SDSS-DR8 surveys. We carried out all analyses up to z\,$\sim$\,0.2, and we studied the relation between X/O flux ratio and accretion rate for different classes of…

Astrophysics of Galaxies · Physics 2021-07-14 Asrate Gaulle , Mirjana Pović , Dejene Zewdie

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…

There is growing evidence supporting the coeval growth of galaxies and their resident SMBH. Most studies also claim a correlation between the activity of the SMBH and the star-formation of the host galaxy. It is unclear, though, whether…

Astrophysics of Galaxies · Physics 2018-10-23 V. A. Masoura , G. Mountrichas , I. Georgantopoulos , A. Ruiz , G. Magdis , M. Plionis

We study the clustering dependence of X-ray AGN and normal galaxies on the stellar mass (M$_\star$), star-formation rate (SFR) and specific star-formation rate (sSFR) of the (host) galaxy. Towards this end, we use 407 X-ray AGN from the…

Astrophysics of Galaxies · Physics 2018-12-19 G. Mountrichas , A. Georgakakis , I. Georgantopoulos

We present a study of the connection between black hole accretion, star formation, and galaxy morphology at z<=2.5. We focus on active galactic nuclei (AGNs) selected by their mid-IR power-law emission. By fitting optical to far-IR…

We use deep Chandra X-ray imaging to measure the distribution of specific black hole accretion rates ($L_X$ relative to the stellar mass of the galaxy) and thus trace AGN activity within star-forming and quiescent galaxies, as a function of…

High Energy Astrophysical Phenomena · Physics 2017-12-27 James Aird , Alison L. Coil , Antonis Georgakakis

We use morphological information of X-ray selected AGN hosts to set limits on the fraction of the accretion density of the Universe at z~1 that is not likely to be associated with major mergers. Deep X-ray observations are combined with…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 A. Georgakakis , A. L. Coil , E. S. Laird , R. L. Griffith , K. Nandra , J. M. Lotz , C. M. Pierce , M. C. Cooper , J. A. Newman , A. M. Koekemoer

The relationship of an AGN to its host galaxy is a crucial question in the study of galaxy evolution. We perform stellar population synthesis in the central regions of galaxies of different activity levels. A large number of stellar…

Astrophysics · Physics 2007-05-23 C. Boisson , M. Joly

The growth of supermassive black holes and their host galaxies are thought to be linked, but the precise nature of this symbiotic relationship is still poorly understood. Both observations and simulations of galaxy formation suggest that…

We present the first quantified, statistical map of broad-line active galactic nucleus (AGN) frequency with host galaxy color and stellar mass in nearby (0.01 < z < 0.11) galaxies. Aperture photometry and z-band concentration measurements…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Jonathan R. Trump , Alexander D. Hsu , Jerome J. Fang , S. M. Faber , David C. Koo , Dale D. Kocevski

The role of active galactic nuclei (AGNs) during galaxy interactions and how they influence the star formation in the system are still under debate. We use a sample of 1156 galaxies in galaxy pairs or mergers (hereafter `pairs') from the…

‹ Prev 1 4 5 6 7 8 10 Next ›