Results 21 to 30 of about 629 (178)
Hidden Quasars in Ultraluminous Infrared Galaxies [PDF]
Symposium - International Astronomical Union, 1998 Many ultraluminous infrared galaxies (ULIRGs) are powered by quasars hidden in the center, but many are also powered by starbursts. A simply diagnostic diagram is proposed that can identify obscured quasars in ULIRGs by their high-ionization emission lines ([O III]λ5007/Hβ ≳ 5), and “warm” IR color (f25/f60≳ 0.25).
H. D. Tran +3 more
openalex +4 more sources
Ultraluminous Infrared Galaxies [PDF]
, 2006 Ever since their discovery in the 1970's, UltraLuminous InfraRed Galaxies (ULIRGs; classically Lir>10^12Lsun) have fascinated astronomers with their immense luminosities, and frustrated them due to their singularly opaque nature, almost in equal measure.
Lonsdale, C. J. +2 more
openaire +3 more sources
Molecular Hydrogen Excitation in Ultraluminous Infrared Galaxies [PDF]
The Astrophysical Journal, 2003 accepted by ApJ (32 pages including figures)
Davies, R. +3 more
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The submillimetre properties of ultraluminous infrared galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 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 existing observations of a further seven ULIRGs to produce the largest sample of submm observations of ULIRGs ...
Clements, DL, Dunne, L, Eales, S
openaire +4 more sources
Ultraluminous Infrared Galaxies: Mergers of Sub‐L* Galaxies? [PDF]
The Astrophysical Journal, 2001 A sample of 27 low-redshift, mostly cool, ultraluminous infrared galaxies (ULIRGs) has been imaged at 1.6 μm with the Hubble Space Telescope (HST) Near-Infrared Camera and Multi-Object Spectrometer (NICMOS). The majority (67%) of the sample's galaxies are multiple-nucleus galaxies with projected separations of up to 17 kpc, and the rest of the sample ...
Colina, Luis +8 more
openaire +1 more source
The QSO — Ultraluminous Infrared Galaxies Connection [PDF]
, 2001 For the past several years, our group has pursued a vigorous ground-based program aimed at understanding the nature of ultraluminous infrared galaxies. We recently published the results from a optical/near-infrared spectroscopic survey of a large statistically complete sample of ultraluminous infrared galaxies (the "IRAS 1-Jy sample").
Veilleux, S. +2 more
openaire +2 more sources
Ultraluminous Infrared Galaxies: QSOs in Formation? [PDF]
The Astrophysical Journal, 2002 accepted to be published in ApJ, 7 ...
Tacconi, L. +6 more
openaire +3 more sources
Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3
Open Astronomy, 2015 Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen +3 more
doaj +1 more source
The Astrophysical Journal, 2023 We present a multiwavelength analysis using the Submillimeter Array (SMA), James Clerk Maxwell Telescope, NOEMA, JWST, the Hubble Space Telescope (HST), and the Spitzer Space Telescope of two dusty strongly star-forming galaxies, 850.1 and 850.2, seen ...
Ian Smail +34 more
doaj +1 more source
The Circumnuclear Environment of IRAS 20551‐4250: A Case Study of AGN/Starburst Connection for JWST
Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012 We present a general review of the current knowledge of IRAS 20551‐4250 and its circumnuclear environment. This Ultraluminous Infrared Galaxy is one of the most puzzling sources of its class in the nearby Universe: the near‐IR spectrum is typical of a galaxy experiencing a very intense starburst, but a highly obscured active nucleus is identified ...
E. Sani, E. Nardini, Antonis Georgakakis
wiley +1 more source