Galaxy And Mass Assembly (GAMA): the 0.013 < z < 0.1 cosmic spectral energy distribution from 0.1  m to 1 mm

Driver, S. P.; Robotham, A. S. G.; Kelvin, L.; Alpaslan, M.; Baldry, I. K.; Bamford, S. P.; Brough, S.; Brown, M.; Hopkins, A. M.; Liske, J.; Loveday, J.; Norberg, P.; Peacock, J. A.; Andrae, E.; Bland-Hawthorn, J.; Bourne, N.; Cameron, E.; Colless, M.; Conselice, C. J.; Croom, S. M.; Dunne, L.; Frenk, C. S.; Graham, A. W.; Gunawardhana, M.; Hill, D. T.; Jones, D. H.; Kuijken, K.; Madore, B.; Nichol, R. C.; Parkinson, H. R.; Pimbblet, K. A.; Phillipps, S.; Popescu, C. C.; Prescott, M.; Seibert, M.; Sharp, R. G.; Sutherland, W. J.; Taylor, E. N.; Thomas, D.; Tuffs, R. J.; van Kampen, E.; Wijesinghe, D.; Wilkins, S.

Abstract

We use the Galaxy And Mass Assembly survey (GAMA) I data set combined with GALEX, Sloan Digital Sky Survey (SDSS) and UKIRT Infrared Deep Sky Survey (UKIDSS) imaging to construct the low-redshift (z < 0.1) galaxy luminosity functions in FUV, NUV, ugriz and YJHK bands from within a single well-constrained volume of 3.4 × 10 5 (Mpc h -1 ) 3 . The derived luminosity distributions are normalized to the SDSS data release 7 (DR7) main survey to reduce the estimated cosmic variance to the 5 per cent level. The data are used to construct the cosmic spectral energy distribution (CSED) from 0.1 to 2.1 μm free from any wavelength-dependent cosmic variance for both the elliptical and non-elliptical populations. The two populations exhibit dramatically different CSEDs as expected for a predominantly old and young population, respectively. Using the Driver et al. prescription for the azimuthally averaged photon escape fraction, the non-ellipticals are corrected for the impact of dust attenuation and the combined CSED constructed. The final results show that the Universe is currently generating (1.8 ± 0.3) × 10 35 h W Mpc -3 of which (1.2 ± 0.1) × 10 35 h W Mpc -3 is directly released into the inter-galactic medium and (0.6 ± 0.1) × 10 35 h W Mpc -3 is reprocessed and reradiated by dust in the far-IR. Using the GAMA data and our dust model we predict the mid- and far-IR emission which agrees remarkably well with available data. We therefore provide a robust description of the pre- and post-dust attenuated energy output of the nearby Universe from 0.1μm to 0.6 mm. The largest uncertainty in this measurement lies in the mid- and far-IR bands stemming from the dust attenuation correction and its currently poorly constrained dependence on environment, stellar mass and morphology. © 2012 The Authors.

Citation

Driver, S. P., Robotham, A. S. G., Kelvin, L., Alpaslan, M., Baldry, I. K., Bamford, S. P., …Wilkins, S. (2012). Galaxy And Mass Assembly (GAMA): the 0.013 < z < 0.1 cosmic spectral energy distribution from 0.1  m to 1 mm. Monthly notices of the Royal Astronomical Society, 427(4), 3244-3264. https://doi.org/10.1111/j.1365-2966.2012.22036.x

• Journal Article Type: Article
• Acceptance Date: Oct 3, 2012
• Online Publication Date: Jan 29, 2013
• Publication Date: Dec 21, 2012
• Deposit Date: Oct 30, 2018
• Publicly Available Date: Nov 7, 2018
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 427
• Issue: 4
• Pages: 3244-3264
• DOI: https://doi.org/10.1111/j.1365-2966.2012.22036.x
• Keywords: Surveys; Galaxies: fundamental parameters; Galaxies: general; Galaxies: luminosity function; Mass function; Cosmology: observations; Infrared: galaxies
• Public URL: https://hull-repository.worktribe.com/output/591251
• Publisher URL: https://academic.oup.com/mnras/article/427/4/3244/973393