LRG catalogue now queryable
Click here to query the 2SLAQ LRG catalogue.
We release here the complete 2SLAQ QSO catalog data from Croom et al. (2008; in press).
We present here the early data release (EDR) of the 2dF-SDSS LRG and QSO (2SLAQ) survey. These data include all observed 2SLAQ objects in 2003.
These data are released by the 2SLAQ team under the caveat that we have not finished our final data analysis and we have not performed a careful data-checking exercise on these data. We have also not studied the areal mask of these data in detail and have arbitarily removed some objects. We ask you to bare this in mind when using these datasets, especially for statistical analyses. We have primarily released this early data to help the community find interesting objects at high redshift for further individual follow-up observations.
Download data below (ascii files with headers)
The 2SLAQ data has been used for two photo-z catalogs, see papers by Padmanabhan et al. (2004), Blake et al. (2006) and Collister et al. (2006)
The latter two papers use a photo-z catalog called MegaZLRG which is now public to everyone from the link below.
On July 31st 2006, three 2SLAQ papers appeared on astro-ph present details of the 2SLAQ LRG sample and new results. These papers are:
Gordon Richards (JHU, Drexel) has made an OpenSkyNode for the 2SLAQ data. This allows easy access to the data and trivial cross-matching with many other datasets. See:
Another science paper by Roseboom et al. on the The Star Formation Histories of Luminous Red Galaxies , see astroph/0609178
The data used in this paper can be found at the UQ 2SLAQ website
We present here the full 2SLAQ LRG sample from Cannon et al. (2006, MNRAS, 372, 425) which is now available for public use.
Sadler et al. present a joint analysis of the 2SLAQ LRGs and FIRST and NVSS radio surveys. They find "The evolution seen in the low-power radio-galaxy population implies that the total energy input into massive early-type galaxies from AGN heating increases with redshift, and was roughly 50% higher at z~0.55 (and up to a factor of two higher at z~1) than in the local universe."
We present here our submission to the conference "Heating vs. Cooling in Galaxies and Clusters of Galaxies" (August 2006, Garching, Germany). Paper is entitled "2dF-SDSS LRG and QSO (2SLAQ) Survey: Evolution of the Most Massive Galaxies"
The clustering of 2SLAQ LRGs and quasars was presented by Ross et al. (astro-ph/0612400) and de Angela et al. (astro-ph/0612401) respectively.
The SDSS-III project (www.sdss3.org) is planning the Baryon Oscillation Spectroscopic Survey (BOSS) which mimics the 2SLAQ LRG selection. However, BOSS will cover 50 times more area (10,000 sq degs) and take nearly 6 years to complete, using the SDSS infrastructure. The 2SLAQ data was seen as an important pathfinder for such a survey and will help in the planning of SDSS-III.
The 2SLAQ samples continue to deliver important new science:
We release here the measured QSO MgII line width parameters used in the 2SLAQ paper by Fine et al. (2008) . Columns include
Wake et al . (2008) continue their study of the clustering of 2SLAQ LRGs, but this time focusing on radio galaxies.