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Galaxy And Mass Assembly (GAMA).
- Source :
- Proceedings of the International Astronomical Union; 06/02/2008, Vol. 4 Issue S254, p469-474, 6p
- Publication Year :
- 2008
-
Abstract
- The GAMA survey aims to deliver 250,000 optical spectra (3–7 Å resolution) over 250 sq. degrees to spectroscopic limits of rAB < 19.8 and KAB < 17.0 mag. Complementary imaging will be provided by GALEX, VST, UKIRT, VISTA, HERSCHEL and ASKAP to comparable flux levels leading to a definitive multi-wavelength galaxy database. The data will be used to study all aspects of cosmic structures on 1kpc to 1Mpc scales spanning all environments and out to a redshift limit of z ≈ 0.4. Key science drivers include the measurement of: the halo mass function via group velocity dispersions; the stellar, HI, and baryonic mass functions; galaxy component mass-size relations; the recent merger and star-formation rates by mass, types and environment. Detailed modeling of the spectra, broad SEDs, and spatial distributions should provide individual star formation histories, ages, bulge-disc decompositions and stellar bulge, stellar disc, dust disc, neutral HI gas and total dynamical masses for a significant subset of the sample (~ 100k) spanning both the giant and dwarf galaxy populations. The survey commenced March 2008 with 50k spectra obtained in 21 clear nights using the Anglo Australian Observatory's new multi-fibre-fed bench-mounted dual-beam spectroscopic system (AAΩ). [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 17439213
- Volume :
- 4
- Issue :
- S254
- Database :
- Complementary Index
- Journal :
- Proceedings of the International Astronomical Union
- Publication Type :
- Academic Journal
- Accession number :
- 57124388
- Full Text :
- https://doi.org/10.1017/S1743921308027981