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American Astronomical Society, Astrophysical Journal, 2(782), p. 90, 2014

DOI: 10.1088/0004-637x/782/2/90

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Galaxy and Mass Assembly (Gama): Mid-Infrared Properties and Empirical Relations Fromwise

Journal article published in 2014 by M. E. Cluver, T. H. Jarrett, A. M. Hopkins, S. P. Driver, J. Liske ORCID, M. L. P. Gunawardhana, E. N. Taylor, A. S. G. Robotham, M. Alpaslan, I. Baldry, M. J. I. Brown, J. A. Peacock, C. C. Popescu, R. J. Tuffs, A. E. Bauer and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The Galaxy And Mass Assembly (GAMA) survey furnishes a deep redshift catalog that, when combined with the Wide-field Infrared Explorer ($WISE$), allows us to explore for the first time the mid-infrared properties of $> 110, 000$ galaxies over 120 deg$^2$ to $z≃ 0.5$. In this paper we detail the procedure for producing the matched GAMA-$WISE$ catalog for the G12 and G15 fields, in particular characterising and measuring resolved sources; the complete catalogs for all three GAMA equatorial fields will be made available through the GAMA public releases. The wealth of multiwavelength photometry and optical spectroscopy allows us to explore empirical relations between optically determined stellar mass (derived from synthetic stellar population models) and 3.4micron and 4.6micron WISE measurements. Similarly dust-corrected Halpha-derived star formation rates can be compared to 12micron and 22micron luminosities to quantify correlations that can be applied to large samples to $z