The million quasars (Milliquas) catalogue, version 2.1 (2010)

MILLIQUAS 2.1 presents 1099490 objects, being 137641 QSOs from the literature, 26953AGN (these are low-luminosity quasars, type II quasars, and Seyferts), 1425 Bl Lacs, 859321 NBCKDE photometric quasars, and 74072 radio/X-ray associated objects (and also 78 SWIRE photometric quasars). A radio and/or X-ray identification is shown where applicable, plus, for the photometric and radio/X-ray associated objects, the probability of each being a true quasar. These expected yields total to 1010340 quasars, making MILLIQUAS a true million-quasar catalog. This is version 2.1 (2010), of publication standard with full de-duplication.

Here is the ReadMe for the catalog, which gives details, file layout and references for the source data. Quick browse of sample data here

Get the file (22 Mb zipped) here:  download milliquas.zip

 


 

The Atlas of Radio/X-ray Associations (PASA, 2010) is here.

 

Eric Flesch, last updated 17 August 2010