GALAXY AND MASS ASSEMBLY (GAMA): MID-INFRARED PROPERTIES AND EMPIRICAL RELATIONS FROM WISE

By Michelle E. Cluver, Thomas H. Jarrett, Andrew M. Hopkins, S. Driver, J. Liske, M. Gunawardhana, E. Taylor, A. Robotham, M. Alpaslan, I. Baldry and 15 more. 2014

143 citations recorded by the source corpus.

The Galaxy And Mass Assembly (GAMA) survey furnishes a deep redshift catalog that, when combined with the Wide-field Infrared Survey Explorer (WISE), allows us to explore for the first time the mid-infrared properties of >110, 000 galaxies over 120 deg2 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 characterizing 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 3.4 μm and 4.6 μm WISE measurements. Similarly dust-corrected Hα-derived star formation rates can be compared to 12 μm and 22 μm luminosities to quantify correlations that can be applied to large samples to z < 0.5. To illustrate the applications of these relations, we use the 12 μm star formation prescription to investigate the behavior of specific star formation within the GAMA-WISE sample and underscore the ability of WISE to detect star-forming systems at z ∼ 0.5. Within galaxy groups (determined by a sophisticated friends-of-friends scheme), results suggest that galaxies with a neighbor within 100 h−1 kpc have, on average, lower specific star formation rates than typical GAMA galaxies with the same stellar mass.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/676e18a95c560076db0374d11638150ea6d0888c

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Citations in the corpus

Galaxy and mass assembly (GAMA): End of survey report and data release 2 (2015, methodology): “Cluver et al. (2014) obtained mid-infrared photometry for GAMA galaxies from reprocessed WISE data.”
The SAMI Galaxy Survey: Instrument specification and target selection (2014, methodology): “Stacked drizzled WISE data has been prepared by the WISE team (procedures described in Jarrett et al. 2012; Cluver et al. 2014), achieving greater depth and resolution than that provided in the WISE all-sky data release.”
STELLAR MASSES AND STAR FORMATION RATES FOR 1 M GALAXIES FROM SDSS+WISE (2015, methodology): “Cluver et al. (2014) analyze the mid-IR properties of the large GAMA sample, but there Hα-based SFRs were used as a calibrator for the mid-IR luminosities from WISE.”