Results 21 to 30 of about 149 (141)

Molecular Hydrogen Excitation in Ultraluminous Infrared Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2003
accepted by ApJ (32 pages including figures)
Davies, R.   +3 more
openaire   +3 more sources

ORIGIN OF MULTIPLE NUCLEI IN ULTRALUMINOUS INFRARED GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2012
12 pages, 9 figures, accepted for publication in ...
Matsui, Hidenori   +8 more
openaire   +2 more sources

High‐Resolution Mid‐Infrared Spectroscopy of Ultraluminous Infrared Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2007
62 pages in preprint format, 4 tables, 23 figures.
Farrah, D.   +10 more
openaire   +3 more sources

Ultraluminous Infrared Galaxies: QSOs in Formation? [PDF]

open access: yesThe Astrophysical Journal, 2002
accepted to be published in ApJ, 7 ...
Tacconi, L.   +6 more
openaire   +3 more sources

The near-infrared morphology of ultraluminous infrared galaxies [PDF]

open access: yesThe Astrophysical Journal, 1990
Near-infrared images at 1.25, 1.65, and 2.2 microns have been obtained of nine galaxies from the IRAS Bright Galaxy Sample with infrared luminosities greater than 10 to the 12th solar luminosities. Two of the 2.2-micron images reveal previously undetected double nuclei, increasing the number of close double nuclei known for this samples from two to ...
Carico, David P.   +6 more
openaire   +2 more sources

ISO Spectroscopy of Ultraluminous Infrared Galaxies

open access: yesAstrophysics and Space Science, 1999
Spectroscopy from the Infrared Space Observatory ISO has for the first timeprovided the sensitivity to exploit the diagnostic power ofmid-infrared fine structure lines and PAH features for the study ofultraluminous infrared galaxies (LIR >1012 L ⊙). We report on observations obtainedwith SWS, ISOPHOT-S, and the CVF option of ISOCAM.
Lutz, D   +7 more
openaire   +1 more source

Star Formation History of Dwarf Galaxies in Cosmological Hydrodynamic Simulations

open access: yesAdvances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We examine the past and current work on the star formation (SF) histories of dwarf galaxies in cosmological hydrodynamic simulations. The results obtained from different numerical methods are still somewhat mixed, but the differences are understandable if we consider the numerical and resolution effects.
Kentaro Nagamine, Andrey V. Kravtsov
wiley   +1 more source

Ultraluminous Infrared Galaxies: Mergers of Sub‐L* Galaxies? [PDF]

open access: yesThe 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

Does the HCN/CO Ratio Trace the Star-forming Fraction of Gas? I. A Comparison with Analytical Models of Star Formation

open access: yesThe Astrophysical Journal, 2023
We use archival ALMA observations of the HCN and CO J = 1–0 transitions, in addition to the radio continuum at 93 GHz, to assess the relation between dense gas, star formation, and gas dynamics in 10 nearby (ultra)luminous IR galaxies (U)LIRGs and late ...
Ashley R. Bemis, Christine D. Wilson
doaj   +1 more source

Hidden Giants in JWST's PEARLS: An Ultramassive z = 4.26 Submillimeter Galaxy that Is Invisible to HST

open access: yesThe 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

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