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相关论文: Dust-Bounded ULIRGs? Model Predictions for Infrare…

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We present a study of the [CII] 157.74 um fine-structure line in a sample of 15 ultraluminous infrared (IR) galaxies (L_IR>10^12 Lsun; ULIRGs) using the Long Wavelength Spectrometer (LWS) on the Infrared Space Observatory (ISO). We confirm…

天体物理学 · 物理学 2009-11-07 M. L. Luhman , S. Satyapal , J. Fischer , M. G. Wolfire , E. Sturm , C. C. Dudley , D. Lutz , R. Genzel

We analyze the mid-infrared (MIR) spectra of ultraluminous infrared galaxies (ULIRGs) observed with the Spitzer Space Telescope's Infrared Spectrograph. Dust emission dominates the MIR spectra of ULIRGs, and the reprocessed radiation that…

天体物理学 · 物理学 2009-11-13 M. M. Sirocky , N. A. Levenson , M. Elitzur , H. W. W. Spoon , L. Armus

We present the results of SCUBA observations of a complete sample of local ULIRGs. Twenty of the initial sample of 23 sources are detected at 850 um and nearly half of the objects are also detected at 450 um. This data is combined with…

宇宙学与河外天体物理 · 物理学 2015-05-14 D. L. Clements , L. Dunne , S. A. Eales

We present a systematic study of the 3.0 um H2O ice and the 3.4 um aliphatic carbon absorption features toward 48 local ultraluminous infrared galaxies (ULIRGs) using spectra obtained by the AKARI Infrared Camera to investigate the UV…

星系天体物理 · 物理学 2019-02-25 Ryosuke Doi , Takao Nakagawa , Naoki Isobe , Shunsuke Baba , Kenichi Yano , Mitsuyoshi Yamagishi

We present an application of the da Cunha, Charlot & Elbaz (2008) model of the spectral energy distribution (SEDs) of galaxies from the ultraviolet to far-infrared to a small pilot sample of purely star-forming Ultra-Luminous Infrared…

宇宙学与河外天体物理 · 物理学 2015-05-19 Elisabete da Cunha , Vassilis Charmandaris , Tanio Diaz-Santos , Lee Armus , Jason A. Marshall , David Elbaz

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

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

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

Current predictions for the line ratios from photo-dissociative regions (PDRs) in galaxies adopt theoretical models that consider only individual parcels of PDR gas each characterized by the local density and far-UV radiation field.…

星系天体物理 · 物理学 2017-03-08 Joseph A. Muñoz , S. Peng Oh

We present millimetre observations of a sample of 12 high redshift ultraluminous infrared galaxies (ULIRGs) in the Extended Growth Strip (EGS). These objects were initially selected on the basis of their observed mid--IR colours (0.0 <…

天体物理学 · 物理学 2009-11-13 J. D. Younger , A. Omont , N. Fiolet , J. -S. Huang , G. G. Fazio , K. Lai , M. Polletta , D. Rigopoulou , R. Zylka

(Abridged) We present R~600, 10-37um spectra of 53 ULIRGs at z<0.32, taken using the IRS on board Spitzer. All of the spectra show fine structure emission lines of Ne, O, S, Si and Ar, as well as molecular Hydrogen lines. Some ULIRGs also…

We present models of deeply buried ultraluminous infrared galaxy (ULIRG) spectral energy distributions (SEDs) and use them to construct a three-dimensional diagram for diagnosing the nature of observed ULIRGs. Our goal is to construct a…

星系天体物理 · 物理学 2018-06-06 J. A. Marshall , M. Elitzur , L. Armus , T. Diaz-Santos , V. Charmandaris

We present the results of Spitzer IRS low-resolution infrared 5-35 micron spectroscopy of nearby ultraluminous infrared galaxies (ULIRGs) at z < 0.15. We focus on the search for the signatures of buried active galactic nuclei (AGNs) in the…

Based on far-infrared spectroscopy of a small sample of nearby infrared-bright and ultraluminous infrared galaxies (ULIRGs) with the ISO Long Wavelength Spectrometer, we find a dramatic progression in ionic/atomic fine-structure emission…

We explore the relationship between gas, dust and star formation in a sample of 12 ultra-luminous infrared galaxies (ULIRGs) at high redshift compared to a similar sample of local galaxies. We present new CO observations and/or Spitzer…

We present Herschel observations of six fine-structure lines in 25 Ultraluminous Infrared Galaxies at z<0.27. The lines, [O III]52, [N III]57, [O I]63, [N II]122, [O I]145, and [C II]158, are mostly single gaussians with widths <600 km s-1…

We investigate the properties of dust and dust-to-gas ratios in different starburst regions of luminous infrared galaxies (LIGs). We refer to the sample of seven LIGs recently observed in the mid-infrared by Soifer et al. (2001) using the…

天体物理学 · 物理学 2008-11-26 Marcella Contini , Thierry Contini

We present 350micron observations of 36 ultraluminous infrared galaxies (ULIRGs) at intermediate redshifts (0.089 <= z <= 0.926) using the Submillimeter High Angular Resolution Camera II (SHARC-II) on the Caltech Submillimeter Observatory…

天体物理学 · 物理学 2011-02-11 M. Yang , T. R. Greve , C. D. Dowell , C. Borys

We present the results of our multifrequency observations for 10 ultraluminous infrared galaxies (ULIRGs) made by the Karl G. Jansky Very Large Array at 1.4, 5.5, 9.0, and 14.0 GHz. Our sample is selected from ULIRGs whose active galactic…

星系天体物理 · 物理学 2021-05-12 Takayuki J. Hayashi , Yoshiaki Hagiwara , Masatoshi Imanishi

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
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