Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-28
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures, Astronomy & Astrophysics Letters (in press)
Scientific paper
10.1051/0004-6361:200500095
We present ISOCAM 15 micron and MIPS 24 micron photometry of a sample of 16 distant Luminous Infrared Galaxies (LIRGs) characterized by a median luminosity L(IR) 2x10^11 Lsol and redshift z = 0.7 (distributed from z = 0.1 to 1.2). While some sources display 24/15 micron flux ratios also consistent with a featureless continuum dominating their mid-infrared (MIR) spectral energy distributions (SEDs), the presence of prominent emission features such as the Polycyclic Aromatic Hydrocarbons is clearly required to explain the observed colors for more than half of the sample. As a result, a general good agreement is observed between the data and predictions from the local starburst-dominated SEDs that have been used so far to constrain IR galaxy evolution. This is consistent with the star-forming nature of LIRGs derived from previous works, even though our approach cannot rule out the dominance of an AGN in some cases. Our study also supports the possibility of tracing the total IR luminosity of distant galaxies (up to z ~ 1) from their MIR emission.
Dole Herve
Elbaz David
Le Floc'h Emeric
Marcillac Delphine
No associations
LandOfFree
Observational evidence for the presence of PAHs in distant Luminous Infrared Galaxies using ISO and Spitzer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observational evidence for the presence of PAHs in distant Luminous Infrared Galaxies using ISO and Spitzer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observational evidence for the presence of PAHs in distant Luminous Infrared Galaxies using ISO and Spitzer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-141913