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相关论文: A Possible Evolutionary Connection between AGN and…

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The relationship between star formation and super-massive black hole growth is central to our understanding of galaxy formation and evolution. Hyper-Luminous Infrared Galaxies (HLIRGs) are unique laboratories to investigate the connection…

宇宙学与河外天体物理 · 物理学 2010-06-16 A. Ruiz , G. Miniutti , F. Panessa , F. J. Carrera

(Abridged) We study relationships between the SFR and the nuclear properties of X-ray selected AGNs out to z=2.5, using far-IR data in three extragalactic deep fields as part of the PACS Evolutionary Probe (PEP) program. Guided by studies…

We present strong empirical evidence for a physical connection between the occurrence of a starburst (SB) and a luminous AGN phase. Drawing infrared (IR), X-ray, and optically selected samples from COSMOS, we find that the locus of type-2…

宇宙学与河外天体物理 · 物理学 2015-06-15 Myrto Symeonidis , J. Kartaltepe , M. Salvato , A. Bongiorno , M. Brusa , M. J. Page , O. Ilbert , D. Sanders , A. van der Wel

We have detected the 158 {\mu}m [CII] line from 12 galaxies at z~1-2. This is the first survey of this important starformation tracer at redshifts covering the epoch of maximum star-formation in the Universe and quadruples the number of…

宇宙学与河外天体物理 · 物理学 2015-05-20 G. J. Stacey , S. Hailey-Dunsheath , C. Ferkinhoff , T. Nikola , S. C. Parshley , D. J. Benford , J. G. Staguhn , N. Fiolet

In this manuscript, clues are provided to support globally negative AGN feedback on star formation in the host galaxies of the local low-redshift SDSS Type-2 AGN, based on the different dependence of narrow H$\alpha$ line luminosity…

星系天体物理 · 物理学 2024-02-09 XueGuang Zhang

We have studied the relationship between the high- and low-ionization [O IV] lambda 25.89 micron, [Ne III] lambda 15.56 micron and [Ne II] lambda 12.81 micron emission lines with the aim of constraining the active galactic nuclei (AGN) and…

[Abridged] Active Galactic Nuclei (AGN) are thought to be responsible for the suppression of star formation in massive ~10$^{10}$ M$_\odot$ galaxies. While this process is a key feature in numerical simulations, it is not yet unambiguously…

We employ UV and optical photometry, from the GALEX and SDSS surveys respectively, to study the star formation histories of 561 luminous infrared galaxies (LIRGs) in the nearby Universe. A small fraction (~4%) of these galaxies have…

天体物理学 · 物理学 2009-11-13 Sugata Kaviraj

Active Galactic Nuclei (AGN) are axisymmetric systems to first order; their observed properties are likely strong functions of inclination with respect to our line of sight, yet the specific inclinations of all but a few AGN are generally…

星系天体物理 · 物理学 2015-06-18 T. C. Fischer , D. M. Crenshaw , S. B. Kraemer , H. R. Schmitt , T. J. Turner

(Abridge): We present a spectroscopic study of the stellar populations of Low Luminosity AGN (LLAGN). Our main goal is to determine whether the stars who live in the innermost (100 pc-scale) regions of these galaxies are in some way related…

We examine the connection between galaxy mergers and the triggering of active galactic nuclei (AGNs) using a sample of 614 type 1 AGNs at $z<0.07$, along with a control sample of inactive galaxies matched to the AGNs for comparison. We used…

星系天体物理 · 物理学 2025-12-03 Yongmin Yoon , Yongjung Kim , Dohyeong Kim , Kyungwon Chun , Woowon Byun

We estimate the fraction of AGNs hosted in starburst galaxies (f_bursty) as a function of the AGN luminosity predicted under the assumption that starburst events and AGN activity are triggered by galaxy interactions during their merging…

宇宙学与河外天体物理 · 物理学 2015-06-17 Alessandra Lamastra , Nicola Menci , Fabrizio Fiore , Paola Santini , Angela Bongiorno , Enrico Piconcelli

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

AGN feedback is believed to play an important role in shaping a variety of observed galaxy properties, as well as the evolution of their stellar masses and star formation rates. In particular, in the current theoretical paradigm of galaxy…

宇宙学与河外天体物理 · 物理学 2015-05-19 Fabio Fontanot , Anna Pasquali , Gabriella De Lucia , Frank C. van den Bosch , Rachel S. Somerville , Xi Kang

We extract from the Sloan Digital Sky Survey a sample of 347 systems involving early type galaxies separated by less than 30 kpc, in projection, and 500 km/s in radial velocity. These close pairs are likely progenitors of dry mergers. The…

宇宙学与河外天体物理 · 物理学 2015-05-13 Ben Rogers , Ignacio Ferreras , Sugata Kaviraj , Anna Pasquali , Marc Sarzi

In this paper, we present a semi-empirical calibration between the oxygen abundance and the $N2$ emission-line ratio for Low Ionization Nuclear Emission Regions (LINERs). This relation was derived by comparing the optical spectroscopic data…

Galaxy major mergers are a potential mechanism for triggering active galactic nuclei (AGN) activity, but their role remains debated, particularly beyond the local Universe. We aim to shed light on the merger-AGN connection at $z=0.5$-$2$,…

星系天体物理 · 物理学 2026-04-29 A. La Marca , B. Margalef-Bentabol , L. Wang , S. C. Trager , V. Rodriguez-Gomez , G. Martin

We present a follow-up study on a series of papers concerning the role of close interactions as a possible triggering mechanism of AGN activity. We have already studied the close (<100kpc/h) and the large scale (<1 Mpc/h) environment of a…

宇宙学与河外天体物理 · 物理学 2015-03-19 E. Koulouridis , M. Plionis , V. Chavushyan , D. Dultzin , Y. Krongold , I. Georgantopoulos , J. Leon-Tavares

We present the results of a 5-8 micron spectral analysis performed on the largest sample of local ultraluminous infrared galaxies (ULIRGs) selected so far, consisting of 164 objects up to a redshift of ~0.35. The unprecedented sensitivity…

宇宙学与河外天体物理 · 物理学 2015-05-18 E. Nardini , G. Risaliti , Y. Watabe , M. Salvati , E. Sani