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相关论文: ISO observations and models of galaxies with Hidde…

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We present sub-mm photometry for 11 Hyperluminous Infrared Galaxies (HLIRGs) and use radiative transfer models for starbursts and AGN to investigate the IR emission. In all sources both a starburst and AGN are required to explain the IR…

天体物理学 · 物理学 2009-11-07 D. Farrah , S. Serjeant , A. Efstathiou , M. Rowan-Robinson , A. Verma

We present a framework for the interpretation of the far-infrared spectra of galaxies in which we have expanded the model parameters compared with previous work by varying the ionization parameter $U$, column density $N$(H), and gas density…

星系天体物理 · 物理学 2014-10-23 Jacqueline Fischer , N. P. Abel , E. González-Alfonso , C. C. Dudley , S. Satyapal , P. A. M. van Hoof

We present spectroscopic results for all galaxies observed with the Spitzer Infrared Spectrograph (IRS) which also have total infrared fluxes f(ir) measured with the Infrared Astronomical Satellite (IRAS), also using AKARI photometry when…

宇宙学与河外天体物理 · 物理学 2015-09-08 Lusine Sargsyan , Daniel Weedman , Vianney Lebouteiller , James Houck , Donald Barry , Ashot Hovhannisyan , Areg Mickaelian

We present results on low-resolution mid-infrared (MIR) spectra of 70 infrared-luminous galaxies obtained with the Infrared Spectrograph (IRS) onboard Spitzer. We selected sources from the European Large Area Infrared Survey (ELAIS) with…

We have performed 23 GHz VLA observations of 7 compact, luminous infrared galaxies, selected to have evidence of starburst activity. New and published multi-frequency data are combined to obtain the spectral energy distributions of all 7…

天体物理学 · 物理学 2009-11-10 O. R. Prouton , A. Bressan , M. Clemens , A. Franceschini , G. L. Granato , L. Silva

New tools from Infrared Space Observatory (ISO) mid-infrared spectroscopy have recently become available to determine the power sources of dust-obscured ultraluminous infrared galaxies (ULIRGs). We compare ISO classifications - starburst or…

天体物理学 · 物理学 2009-10-31 D. Lutz , S. Veilleux , R. Genzel

We present medium resolution (R approx. 1500) ISO-SWS 2.4--45 micron spectra of a sample of 29 galaxies with active nuclei. This data set is rich in fine structure emission lines tracing the narrow line regions and (circum-)nuclear star…

天体物理学 · 物理学 2009-11-07 E. Sturm , D. Lutz , A. Verma , H. Netzer , A. Sternberg , A. F. M. Moorwood , E. Oliva , R. Genzel

Infrared-faint radio sources (IFRSs) are believed to be a rare class of radio-loud active galactic nuclei (RL AGN) characterized by their high radio-to-infrared flux density ratios of up to several thousands. Previous studies have shown…

星系天体物理 · 物理学 2025-02-11 Yihang Zhang , Lulu Fan , Tao An , Jun Yang , Weibin Sun , Haoran Yu , Yunkun Han

We present 7-180micron photometry of a sample of hyperluminous infrared galaxies (HyLIGs) obtained with the photometer and camera mounted on the Infrared Space Observatory. We have used radiative transfer models of obscured starbursts and…

天体物理学 · 物理学 2009-11-07 Aprajita Verma , Michael Rowan-Robinson , Richard McMahon , Andreas Efstathiou

We analyze a sample of galaxies chosen to have F24>0.5 mJy and satisfy a certain IRAC color criterion. IRS spectra yield redshifts, spectral types, and PAH luminosities, to which we add multi-wavelength broadband photometry. Stellar…

We analyze the link between active galactic nuclei (AGN) and mid-infrared flux using dust radiative transfer calculations of starbursts realized in hydrodynamical simulations. Focusing on the effects of galaxy dust, we evaluate diagnostics…

宇宙学与河外天体物理 · 物理学 2013-07-12 Gregory F. Snyder , Christopher C. Hayward , Anna Sajina , Patrik Jonsson , Thomas J. Cox , Lars Hernquist , Philip F. Hopkins , Lin Yan

Some of the most active galaxies in the Universe are obscured by large quantities of dust and emit a substantial fraction of their bolometric luminosity in the infrared. Observations of these infrared luminous galaxies with the Infrared…

天体物理学 · 物理学 2009-11-11 Aprajita Verma , Vassilis Charmandaris , Ulrich Klaas , Dieter Lutz , Martin Haas

We conduct for the first time a theoretical investigation of the mid-infrared spectral energy distribution (SED) produced by dust heated by an active galactic nucleus (AGN) and an extreme starburst. These models employ an integrated…

星系天体物理 · 物理学 2018-05-16 Shobita Satyapal , Nicholas P. Abel , Nathan J. Secrest

[Abridged] We present ISO far-infrared (IR) observations of 21 hard X-ray selected AGN from the HEAO-1 A2 sample. We compare the far-IR to X-ray spectral energy distributions (SEDs) of this sample with various radio and optically selected…

Spectra have been obtained with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope for 20 sources in the Lockman Hole field of the SWIRE survey. The sample is divided between sources with indicators of an obscured AGN, based…

天体物理学 · 物理学 2008-11-26 D. Weedman , M. Polletta , C. J. Lonsdale , B. J. Wilkes , B. Siana , J. R. Houck , J. Surace , D. Shupe , D. Farrah , H. E. Smith

We characterize infrared spectral energy distributions of 343 (Ultra) Luminous Infrared Galaxies from $z=0.3-2.8$. We diagnose the presence of an AGN by decomposing individual Spitzer mid-IR spectroscopy into emission from star-formation…

The dust-to-gas ratios in three different samples of luminous, ultraluminous, and hyperluminous infrared galaxies are calculated by modelling their radio to soft X-ray spectral energy distributions using composite models which account for…

天体物理学 · 物理学 2009-11-13 M. Contini , T. Contini

We summarize observations with the Spitzer Infrared Spectrograph (IRS) of 571 starbursts (strong PAH emission features), 128 obscured AGN (strong silicate absorption), and 39 unobscured AGN (silicate emission). Sources range in luminosity…

宇宙学与河外天体物理 · 物理学 2010-05-04 James R. Houck , Daniel W. Weedman

Submillimetre (sub-mm) galaxies have very high infrared (IR) luminosities and are thousands of times more numerous at z~2 than local ultra-luminous IR galaxies. They therefore represent a key phase in galaxy evolution which can be missed in…

天体物理学 · 物理学 2007-05-23 Alexandra Pope , Ranga-Ram Chary , Mark Dickinson , Douglas Scott

As part of the "All Wavelength Extended Groth Strip International Survey" (AEGIS), we describe the panchromatic characterization of an X-ray luminous active galactic nucleus (AGN) in a merging galaxy at z=1.15. This object is detected at…

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