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相关论文: The relation between star formation rate and accre…

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The star formation rate (SFR) is one of the most fundamental parameters of galaxies, but nearly all of the standard SFR diagnostics are difficult to measure in active galaxies because of contamination from the active galactic nucleus (AGN).…

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

We present results from a high resolution X-ray imaging study of nearby LINERs observed by Chandra. This study complements and extends previous X-ray studies of LINERs, focusing on the under-explored population of nearby dust-enshrouded…

天体物理学 · 物理学 2009-11-10 R. P. Dudik , S. Satyapal , M. Gliozzi , R. M. Sambruna

Using the spectra of a sample of $\sim$28,000 nearby obscured active galaxies from Data Release 7 of the Sloan Digital Sky Survey (SDSS), we probe the connection between AGN activity and star formation over a range of radial scales in the…

宇宙学与河外天体物理 · 物理学 2015-06-15 Stephanie M. LaMassa , Timothy M. Heckman , Andrew Ptak , C. Megan Urry

The massive black holes in most faint active galactic nuclei (AGNs) and even normal galaxies are still accreting gases, though their accretion rates are very low. Radiatively inefficient accretion flows (RIAFs) are supposed in these faint…

天体物理学 · 物理学 2011-02-11 Xinwu Cao

We present archival high resolution X-ray imaging observations of 25 nearby LINERs observed by ACIS on board Chandra. This sample builds on our previously published proprietary and archival X-ray observations, and includes the complete set…

天体物理学 · 物理学 2009-11-13 S. Satyapal , R. P. Dudik , B. O'Halloran , M. Gliozzi

We use a suite of hydrodynamical simulations of galaxy mergers to compare star formation rate (SFR) and black hole accretion rate (BHAR) for galaxies before the interaction ('stochastic' phase), during the `merger' proper, lasting ~0.2-0.3…

星系天体物理 · 物理学 2015-05-28 Marta Volonteri , Pedro R. Capelo , Hagai Netzer , Jillian Bellovary , Massimo Dotti , Fabio Governato

The transition of a standard thin disk to a radiatively inefficient accretion flow (RIAF) is expected to occur, when its dimensionless accretion rate is lower than the critical value. The RIAF is very hot, and it radiates mostly in the hard…

天体物理学 · 物理学 2009-11-13 Xinwu Cao

In this study we investigate the relationship between the star formation rate, SFR, and AGN luminosity, L(AGN), for ~2000 X-ray detected AGN. The AGN span over three orders of magnitude in X-ray luminosity (10^(42) < L(2-8keV) < 10^(45.5)…

It is now widely believed that the growth of massive black holes is closely linked to the formation of galaxies, but there have been few concrete constraints on the actual physical processes responsible for this coupling. Investigating the…

天体物理学 · 物理学 2007-05-23 Luis C. Ho

The influence of Active Galactic Nuclei (AGN) on star formation within their host galaxies remains a topic of intense debate. One of the primary challenges in quantifying the star formation rate (SFR) within AGN hosts arises from the…

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

We examine the correlation between the star formation rate (SFR) and black hole accretion rate (BHAR) across a suite of different AGN feedback models, using the time evolution of a merger simulation. By considering three different stages of…

星系天体物理 · 物理学 2015-06-22 Robert J. Thacker , C. MacMackin , James Wurster , Alexander Hobbs

It has long been known that galaxy interactions are associated with enhanced star formation. In a companion paper, we explored this connection by applying a variety of statistics to SDSS data. In particular, we showed that specific star…

天体物理学 · 物理学 2009-11-13 Cheng Li , Guinevere Kauffmann , Timothy M. Heckman , Simon D. M. White , Y. P. Jing

We present the results of a stacking analysis performed on Spitzer/Infrared Spectrograph high-resolution mid-infrared spectra of luminous infrared galaxies (LIRGs) in the Great Observatories All-Sky LIRG Survey (GOALS). By binning on…

Galaxy evolution and extragalactic astronomy research depend on an understanding of the interactions between active galactic nuclei (AGN) and their host galaxies. We investigate the relationships between X-ray luminosity (Lx), star…

星系天体物理 · 物理学 2025-09-03 SH. M. Shehata , F. Shaban , R. M. Samir

Using artificial neural network (ANN) predictions of total infra-red luminosities (LIR), we compare the host galaxy star formation rates (SFRs) of ~21,000 optically selected active galactic nuclei (AGN), 466 low excitation radio galaxies…

星系天体物理 · 物理学 2016-03-09 Sara L. Ellison , Hossen Teimoorinia , David J. Rosario , J. Trevor Mendel

In a Universe where AGN feedback regulates star formation in massive galaxies, a strong correlation between these two quantities is expected. If the gas causing star formation is also responsible for feeding the central black hole, then a…

星系天体物理 · 物理学 2015-07-01 Thales A. Gutcke , Nikos Fanidakis , Andrea V. Macciò , Cedric Lacey

We present new estimates of redshift-dependent luminosity functions of IR lines detectable by SPICA/SAFARI and excited both by star formation and by AGN activity. The new estimates improve over previous work by using updated evolutionary…

星系天体物理 · 物理学 2015-06-22 M. Bonato , M. Negrello , Z. -Y. Cai , G. De Zotti , A. Bressan , A. Lapi , F. Pozzi , C. Gruppioni , L. Danese

We present a new suite of hydrodynamical simulations and use it to study, in detail, black hole and galaxy properties. The high time, spatial and mass resolution, and realistic orbits and mass ratios, down to 1:6 and 1:10, enable us to…

星系天体物理 · 物理学 2015-06-23 Marta Volonteri , Pedro R. Capelo , Hagai Netzer , Jillian Bellovary , Massimo Dotti , Fabio Governato