The SAMI Galaxy Survey: Data Release One with emission-line physics value-added products

Abstract

We present the first major release of data from the SAMI Galaxy Survey. This\ndata release focuses on the emission-line physics of galaxies. Data Release One\nincludes data for 772 galaxies, about 20% of the full survey. Galaxies included\nhave the redshift range 0.004 < z < 0.092, a large mass range (7.6 <\nlog(Mstellar/M$_\\odot$) < 11.6), and star-formation rates of 10^-4 to 10^1\\\nM$_\\odot$/yr. For each galaxy, we include two spectral cubes and a set of\nspatially resolved 2D maps: single- and multi-component emission-line fits\n(with dust extinction corrections for strong lines), local dust extinction and\nstar-formation rate. Calibration of the fibre throughputs, fluxes and\ndifferential-atmospheric-refraction has been improved over the Early Data\nRelease. The data have average spatial resolution of 2.16 arcsec (FWHM) over\nthe 15~arcsec diameter field of view and spectral (kinematic) resolution R=4263\n(sigma=30km/s) around Halpha. The relative flux calibration is better than 5\\%\nand absolute flux calibration better than $\\pm0.22$~mag, with the latter\nestimate limited by galaxy photometry. The data are presented online through\nthe Australian Astronomical Observatory's Data Central.\n