3.3.17  :  Henriques2012a

This database stores lightcones derived from the Millennium Run galaxy catalogue in the Guo2010a database. This link contains a description of the "virtual observation" algorithm, as presented in Henriques et al. (2012). The lightcones were created using an updated version of the MoMaF code (see Blaizot et al. (2005)) and the semi-analytic model presented in Guo et al. (2011). If you use the data from this dataset, please cite Henriques et al. (2012) and Guo et al. (2011) as well as the relevant papers mentioned in the general credits page, G. Lemson & the Virgo Consortium (2006) and V. Springel et al. (2005).

The database stores cones for galaxy catalogues created with the same physics, but using two different stellar population synthesis algorithms, Bruzual & Charlot (2003) and Maraston (2005).

For each stellar population, the first set of cones contains: 24 pencil-beam lightcones (1.4 times 1.4 square degrees) for different lines-of-sight with observer-frame apparent magnitudes in 40 bands; the same 24 pencil-beam lightcones with rest-frame absolute magnitudes for SDSS and VISTA/2MASS bands; one allsky lightcone with SDSS and VISTA/2MASS observer-frame apparent magnitudes [NB as of 2012-01-17 only a BC03 allsky map is available, an M05 version will be added soon]. All magnitudes are in the AB system. (This link fully describes the photometric properties available, including filter curves). All physical properties of galaxies can be obtained by joining the lightcone tables with the Guo2010a catalog.

These catalogues still assume the WMAP 1 cosmology of the Millennium simulations. A second set will be published soon based on the WMAP 7 cosmology, produced with the scaling algorithm of Angulo & White (2010).

No flux limits are imposed, except for the all sky maps (i<21.0). Nonetheless, due to the resolution of the dark matter simulation used to construct the semi-analytic model (Millennium Run, see Springel et al. (2005)), objects with stellar mass bellow 109 Msun should not be used.

In this link, we present all the queries used to produce the plots in Henriques et al. (2012) (number counts, redshift distributions, B-band luminosity function, K-band luminosity function and colour distributions) and some other useful examples.