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The spatial distribution of galaxy clusters provides a reliable tracer of the large-scale distribution of matter in the Universe. The clustering signal depends on intrinsic cluster properties and cosmological parameters. The ability of…

We exploit the VST ATLAS quasar/QSO catalogue to perform three measurements of the quasar halo mass profile. First, we make a new estimate of the angular auto-correlation function of $\approx230,000$ ATLAS quasars with $z_{photo}\lesssim…

宇宙学与河外天体物理 · 物理学 2024-11-01 Alice M. Eltvedt , T. Shanks , N. Metcalfe , B. Ansarinejad , L. F. Barrientos , D. N. A. Murphy , D. M. Alexander

Deep X-ray surveys have provided a comprehensive and largely unbiased view of active galactic nuclei (AGN) evolution stretching back to $z \sim 5$. However, it has been challenging to use the survey results to connect this evolution to the…

宇宙学与河外天体物理 · 物理学 2016-09-21 D. R. Ballantyne

We study the evidence for a connection between active galactic nuclei (AGN) fueling and star formation by investigating the relationship between the X-ray luminosities of AGN and the star formation rates (SFRs) of their host galaxies. We…

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…

星系天体物理 · 物理学 2018-10-23 V. A. Masoura , G. Mountrichas , I. Georgantopoulos , A. Ruiz , G. Magdis , M. Plionis

We present new determinations of the stellar-to-halo mass relation (SHMR) at $z=0-10$ that match the evolution of the galaxy stellar mass function, the SFR$-M_*$ relation,and the cosmic star formation rate. We utilize a compilation of 40…

星系天体物理 · 物理学 2017-06-28 Aldo Rodriguez-Puebla , Joel R. Primack , Vladimir Avila-Reese , S. M. Faber

It has been argued that supermassive black holes (BHs) coevolve with the central parts of galaxies, as a result of the common fuel for both the BH and star formation in the galaxy central region, as supported by the particularly significant…

星系天体物理 · 物理学 2026-05-22 Q. Ni , K. Nandra , A. Merloni , J. Comparat , D. Tubín-Arenas , Y. Zhang

We examine the dependence of the mass-to-light (M/L) ratio of large-scale structure on cosmological parameters, in models that are constrained to match observations of the projected galaxy correlation function w(rp). For a sequence of…

天体物理学 · 物理学 2010-04-06 Jeremy L. Tinker , David H. Weinberg , Zheng Zheng , Idit Zehavi

We report on the stellar content of the COSMOS two degree field, as derived from a rigorous star/galaxy separation approach developed for using stellar sources to define the point spread function variation map used in a study of weak galaxy…

We present the clustering measurement of hard X-ray selected AGN in the local Universe. We used a sample of 199 sources spectroscopically confirmed detected by Swift-BAT in its 15-55 keV all-sky survey. We measured the real space projected…

宇宙学与河外天体物理 · 物理学 2015-05-19 N. Cappelluti , M. Ajello , D. Burlon , M. Krumpe , T. Miyaji , S. Bonoli , J. Greiner

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…

星系天体物理 · 物理学 2022-08-10 Shiying Lu , Yizhou Gu , Guanwen Fang , Qirong Yuan , Min Bao , Xiaotong Guo

We have compared the observed distribution of galaxies in the plane of specific star formation rate versus stellar mass with the predictions of the Garching semi-analytic model at redshifts 0, 1 and 2. The goal is to test whether the…

星系天体物理 · 物理学 2015-06-12 Bogdan C. Ciambur , Guinevere Kauffmann , Stijn Wuyts

Observations at low redshift have begun to tease out the star formation rate in active galaxies (AGN), which marks the beginning of the black hole-star formation connection over cosmic time. Star formation appears to depend on AGN type,…

高能天体物理现象 · 物理学 2021-11-03 Chandra B. Singh , Nelitha Kulasiri , Max North , David Garofalo

Utilizing Chandra X-ray observations in the All-wavelength Extended Groth Strip International Survey (AEGIS) we identify 241 X-ray selected Active Galactic Nuclei (AGNs, L > 10^{42} ergs/s) and study the properties of their host galaxies in…

We investigate the star-forming main sequence of the host galaxies of a large, well-defined sample of 453 redshift $\sim$0.3 quasars with previously available star formation rates by deriving stellar masses from modeling their broad-band…

星系天体物理 · 物理学 2023-08-21 Ming-Yang Zhuang , Luis C. Ho

We analyze a volume-limited sample from the Sloan Digital Sky Survey (SDSS) to compare the spatial clustering and physical properties of active galactic nuclei (AGN) and star-forming galaxies (SFG) at fixed stellar mass. We find no…

星系天体物理 · 物理学 2025-06-24 Amrita Banerjee , Biswajit Pandey , Anindita Nandi

Data from the AEGIS, COSMOS and ECDFS surveys are combined to infer the bias and dark matter halo mass of moderate luminosity [LX(2-10 keV) = 42.9 erg s-1] X-ray AGN at z~1 via their cross-correlation function with galaxies. In contrast to…

宇宙学与河外天体物理 · 物理学 2015-06-12 G. Mountrichas , A. Georgakakis , A. Finoguenov , G. Erfanianfar , M. C. Cooper , A. L. Coil , E. S. Laird , K. Nandra , J. A. Newman

Using deep Herschel and ALMA observations, we investigate the star formation rate (SFR) distributions of X-ray selected AGN host galaxies at 0.5<z<1.5 and 1.5<z<4, comparing them to that of normal, star-forming (i.e., "main-sequence", or…

We investigate the mean star formation rates (SFRs) in the host galaxies of ~3000 optically selected QSOs from the SDSS survey within the Herschel-ATLAS fields, and a radio-luminous sub-sample, covering the redshift range of z = 0.2-2.5.…

We study the relation of active galactic nuclei (AGNs) to star formation in their host galaxies. Our sample includes 205 Type-1 and 85 Type-2 AGNs, 162 detected with Herschel, from fields surrounding 30 galaxy clusters in the Local Cluster…

星系天体物理 · 物理学 2015-08-19 Lei Xu , G. H. Rieke , E. Egami , C. P. Haines , M. J. Pereira , G. P. Smith
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