Results 11 to 20 of about 1,606 (187)
The nature of hyperluminous infrared galaxies [PDF]
Context. Hyperluminous infrared galaxies (HLIRGs) are shown to have been more abundant in early epochs. The small samples used in earlier studies are not sufficient to draw robust statistical conclusions regarding the physical properties and the power sources of these extreme infrared (IR) bright galaxies. Aims.
Gao, F. +9 more
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The infrared luminosity of galaxy clusters [PDF]
9 pages, 7 figures, accepted july 31st 2008 for publication in Astronomy and Astrophysics, language improved for this ...
Giard, M. +3 more
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Near-Infrared Spectra of Ultraluminous Infrared Galaxies [PDF]
Near infrared spectra with resolution R ~ 1100 in the rest wavelength range 1.8-2.2 microns have been obtained for a complete sample of 33 ultraluminous infrared galaxies. Of the 33 objects observed, 2 show evidence of a central AGN through either a broad Paschen-alpha line or emission in the 1.963 micron fine structure of [Si VI].
Murphy, Jr., T. W. +4 more
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Mid infrared polarisation of Ultraluminous Infrared Galaxies [PDF]
The mid infrared polarisation properties of four Ultraluminous Infrared Galaxies (ULIRGs) have been investigated by broad band filter observations with the ISOCAM instrument on board the Infrared Space Observatory (ISO). The wavelength region from 5 to 18 mic. was selected where the emission from the putative torus peaks.
Siebenmorgen, R., Efstathiou, A.
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Infrared polarimetry of galaxies. I - Infrared luminous galaxies
Les observations polarimetriques a 1.2, 1.65 et 2.2 μm sont presentees pour les noyaux de 6 galaxies IR lumineuses: IRAS 05189-2524, UGC 5101, Mrk 231, Mrk 273, Arp 220 et NGC 6240. Les nombreux mecanismes et les geometries responsables de la production de la polarisation dans le proche IR sont discutes en ...
Terry Jay Jones, Dimitri Klebe
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MID-INFRARED SPECTRAL DIAGNOSTICS OF LUMINOUS INFRARED GALAXIES [PDF]
accepted for publication in ApJ, 34 pages, 12 ...
Petric, A. O. +24 more
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Ultraluminous Infrared Galaxies: Atlas of Near‐Infrared Images [PDF]
To appear in ApJSupp; 9 embedded figures; Complete ps copy with higher resolution figures available at http://www.stsci.edu ...
Bushouse, H A +8 more
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Far‐Infrared Galaxies in the Far‐Ultraviolet [PDF]
In an effort to better understand the UV properties of ultraluminous infrared galaxies (ULIGs), and compare them to the rest-frame UV properties of high redshift sub-mm and Lyman-break galaxies, we have obtained far- and near-UV imaging observations (lambda_{eff}=1457Å, lambda_{eff}=2364Å, respectively) of two luminous infrared galaxies (LIGs--VV 114 ...
Goldader, J. +6 more
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Ultraluminous Infrared Galaxies [PDF]
At luminosities above ~ 1011L⊙, infrared galaxies become the dominant population of extragalactic objects in the local Universe (z < 0.5), being more numerous than optically selected starburst and Seyfert galaxies, and QSOs at comparable bolometric luminosity.
Sanders, D. B. +2 more
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Silicates in Ultraluminous Infrared Galaxies
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 emerges is independent of the underlying heating spectrum.
Sirocky, M. M. +4 more
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