8 papers
An Initial Look at the FIR-Radio Correlation within M51a using Spitzer
Eric J. Murphy, Lee Armus, George Helou +2
We present an initial look at the FIR-radio correlation within the star-forming disk of M51a using {\it Spitzer} MIPS imaging, observed as part of the {\it Spitzer} Infrared Nearby…
A best fit evolution scenario for the SCUBA galaxies
S. C. Chapman, G. F. Lewis, G. Helou
We explore the evolution of the SCUBA sub-mm galaxy population using Monte Carlo simulations to generate synthetic sub-mm/radio color magnitude diagrams. To represent the local dis…
Evidence for the Heating of Atomic Interstellar Gas by PAHs
George Helou, Sangeeta Malhotra, David J. Hollenbach +2
We report a strong correlation between the [CII] 158 micron cooling line and the mid-infrared flux in the 5-10 micron range in a wide variety of star-forming galaxies. The mid-infr…
Normal Galaxies in the Infrared
George Helou
This review addresses what can be learned from infrared observations about galaxies powered predominantly by star formation. Infrared techniques mostly probe the interstellar mediu…
ISO measurements of [CII] line variations in galaxies
S. Malhotra, G. Helou, G. Stacey +11
We report measurements of the [CII] fine structure line at 157.714 micron in 30 normal star-forming galaxies with the Long Wavelength Spectrometer (LWS) on the Infrared Space Obser…
An ISOPHOT of the disk of galaxy NGC 6946: 60 micron infrared and radio continuum correlation
N. Y. Lu, G. Helou, R. Tuffs +4
We use the ISOPHOT 60 micron image of Tuffs et al. (1996) to study the 60 micron light distribution and its correlation with radio continuum within the disk of spiral galaxy NGC694…