Monkiewicz, J A, Dickinson, M E, Davoodi, P, Oliver, S J, Tremonti, C A and Chary, R (2005) The relationship of mid-infrared PAH emission to far-infrared luminosity in star-forming galaxies in the Spitzer Wide-area Infrared Extragalactic Survey. Bulletin of the American Astronomical Society, 37. p. 1250.

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Abstract

We examine the behavior of the 6-9 μ m PAH complex as a function of LIR, using integrated 8, 24, and 70 μ m fluxes for star-forming galaxies in the Spitzer Wide-area Infrared Extragalactic Survey (SWIRE). Using redshifts measured by the Sloan Digitized Sky Survey, we measure 8 μ m-FIR flux ratios for 520 galaxies at z < 0.3, with 8-1000 μ m bolometric luminosities between 8.0 < log10}(L{IR) < 11.8. We use spectral line indices from the MPA/JHU Value-Added Catalog to study the behavior of the (f8/fIR})-L_{IR relation as a function of metallicity and nuclear activity. Comparing with pre-Spitzer spectral templates (e.g., Chary & Elbaz 2001; Dale & Helou 2002) suggests that empirical refinements can be made which would improve the agreement of the mid- to far-infrared luminosity ratios. This low-redshift recalibration may be important when interpreting mid-infrared (e.g. MIPS 24 μ m) observations of galaxies at z ˜ 2.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User:	Seb Oliver
Date Deposited:	06 Feb 2012 18:26
Last Modified:	22 Oct 2019 14:22
URI:	http://sro.sussex.ac.uk/id/eprint/16287

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