Understanding the two-dimensional ionization structure in luminous infrared galaxies

High-ionization Fe K Emission from Luminous Infrared Galaxies

The Chandra component of the Great Observatories All-Sky LIRG Survey (GOALS) presently contains 44 luminous and ultraluminous infrared galaxies with log (LIR/L⊙) = 11.73−12.57. Omitting 15 obvious AGNs, the other galaxies are, on average, underluminous in the 2-10keV band by 0.7 dex at a given far-infrared luminosity, compared to nearby star-forming galaxies with lower star formation rates. The...

The Neutral Hydrogendistribution in Luminous Infrared Galaxies

Identification of Luminous Infrared Galaxies

We present preliminary results on 24μm detections of luminous infrared galaxies at z > ∼ 1 with the Multiband Imaging Photometer for Spitzer (MIPS). Observations were performed in the Lockman Hole and the Extended Groth Strip (EGS), and were supplemented by data obtained with the Infrared Array Camera (IRAC) between 3 and 9μm. The positional accuracy of ∼ 2 ′′ for most MIPS/IRAC detections prov...

What powers luminous infrared galaxies?

Based on the initial data sets taken with the ISO short wavelength spectrometer (SWS) we present a first discussion of the source of luminosity of (ultra-)luminous infrared galaxies (ULIRGs). By comparison of observations of 2.5-45 m lines to classical starbursts and active galactic nuclei and by modelling of the line emission we show that three key representatives of this class, Arp 220, NGC 6...

CO Molecular Gas in Infrared Luminous Galaxies

We present the first statistical survey of the properties of the CO(1-0) and CO(3-2) line emission from the nuclei of a nearly complete subsample of 60 infrared (IR) luminous galaxies selected from SCUBA Local Universe Galaxy Survey (SLUGS). This subsample is flux limited at S60μm ≥ 5.24 Jy with far-IR (FIR) luminosities mostly at LFIR > 10 10 L⊙. We compare the emission line strengths of CO(1-...