Results 111 to 120 of about 30,280 (240)

JWST Discovery of a Very Fast Biconical Outflow of Warm Molecular Gas in the Nearby Ultraluminous Infrared Galaxy F08572+3915 NW

open access: yesThe Astrophysical Journal
We present new James Webb Space Telescope (JWST) Mid-Infrared Instrument Medium-Resolution Spectrometer observations of the nearby ultraluminous infrared galaxy (ULIRG) F08572+3915 NW. These integral field spectroscopic (IFS) data reveal a kpc-scale warm-
Kylie Yui Dan   +11 more
doaj   +1 more source

Warm molecular hydrogen in outflows from ultraluminous infrared Galaxies [PDF]

open access: yes, 2013
Ultraluminous infrared galaxies (ULIRGs) show on average three times more emission in the rotational transitions of molecular hydrogen than expected based on their star formation rates. Using Spitzer archival data we investigate the origin of excess warm
M. Hill, N. Zakamska
semanticscholar   +1 more source

A Complete 16 μm Selected Galaxy Sample at z ∼ 1. II. Morphological Analysis

open access: yesThe Astrophysical Journal
We present a morphological analysis of the 16 μ m flux-density-limited galaxy sample at 0.8 < z < 1.3 from Huang et al. (2021). At the targeted redshift, the 16 μ m emission corresponds to the polycyclic aromatic hydrocarbon feature from intense star ...
Piaoran Liang   +4 more
doaj   +1 more source

APM 08279+5255: an ultraluminous BAL quasar at a redshift z=3.87

open access: yes, 1998
We report on the discovery of a highly luminous, broad absorption line quasar at a redshift of $z=3.87$ which is positionally coincident, within one arcsecond, with the IRAS FSC source F08279+5255.
Edward J. Totten   +13 more
core   +1 more source

High Resolution Mid-Infrared Imaging of Ultraluminous Infrared Galaxies [PDF]

open access: yes, 1999
Observations of ultraluminous infrared galaxies (ULIRGs) with an achieved resolution approaching the diffraction limit in the mid-infrared from 8 - 25 $\mu$m using the Keck Telescopes are reported.
A. J. Weinberger   +15 more
core   +4 more sources

PROBING THE INTERSTELLAR MEDIUM OF z ∼ 1 ULTRALUMINOUS INFRARED GALAXIES THROUGH INTERFEROMETRIC OBSERVATIONS OF CO AND SPITZER MID-INFRARED SPECTROSCOPY [PDF]

open access: yes, 2013
We explore the relationship between gas, dust, and star formation in a sample of 12 ultraluminous infrared galaxies (ULIRGs) at high-redshift compared to a similar sample of local galaxies.
A. Pope   +10 more
semanticscholar   +1 more source

Spaxel analysis: probing the physics of star formation in ultraluminous infrared galaxies [PDF]

open access: yes, 2013
This paper presents a detailed spectral pixel (spaxel) analysis of the ten Luminous Infrared Galaxies (LIRGs) previously observed with the Wide Field Spectrograph (WiFeS), an integral field spectrograph mounted on the ANU 2.3 m telescope, and for which ...
M. Dopita   +7 more
semanticscholar   +1 more source

Galaxy Collisions - Dawn of a New Era

open access: yes, 2005
The study of colliding galaxies has progressed rapidly in the last few years, driven by observations with powerful new ground and space-based instruments. These instruments have used for detailed studies of specific nearby systems, statistical studies of
A. Alonso-Herrero   +180 more
core   +2 more sources

Silicates in Ultraluminous Infrared Galaxies

open access: yesThe Astrophysical Journal, 2008
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
openaire   +4 more sources

A Comparative Study of Ultraluminous Infrared Galaxies in the IRAS and SDSS Surveys

open access: yesThe Astrophysical Journal Supplement Series
We present a comprehensive study of ultraluminous infrared galaxies (ULIRGs), leveraging data from the Infrared Astronomical Satellite Faint Source Catalogue and the spectroscopic catalog in the Sloan Digital Sky Survey Data Release 16.
Shaohua Zhang   +5 more
doaj   +1 more source

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