LSSTC AGN Data Challenge 2021

This repository hosts the dataset used in the LSSTC AGN Data Challenge (DC) 2021 (PI: Gordon Richards). More information about the data challenge can be found in the DC GitHub repository @ https://github.com/RichardsGroup/AGN_DataChallenge. <strong>Dataset Versions: </strong> <strong>1.0: </strong>The initial dataset used in the DC, as well as the blinded dataset (ObjectTable_Blinded.parquet) that was used to evaluate submissions. Note that the image cutouts are not included here due to the large size, but the script used to generate those cutouts using SDSS archive services is included in the DC GitHub repository. <strong>1.1: </strong>The same dataset as in v1.0 but with the following updates: Uncovered the true coordinates of each source in the dataset Added E(B-V) for every source using the SFD1998 dust map Added spectrum source information (i.e., SDSS fiberid, plate, mjd) if available. <strong>Caveat:</strong> The optical (grizY) and NIR photometry of sources in the XMM-LSS field is a product of the HSC/VISTA pixel-level joint processing initiative led by Raphael Shirley and Manda Banerji. Thus, it is an early prototype dataset and is still subject to testing and characterization. <strong>Citation:</strong> The DC dataset released here is a compilation of data from various sources. If you find the DC dataset useful for your research and would like to acknowledge it, please also reference the original sources of the data. Below is a list of publications that you should consider citing. <em>X-ray in XMM-LSS (XMM-SERVS): </em>2018MNRAS.478.2132C <em>UV Photometry (GALEX): </em>2017ApJS..230...24B <em>Optical Photometry (in the object/source tables): </em> DES: 2021ApJS..255...20A SDSS Stripe 82 Coadd: 2014ApJ...794..120A HSC DR2: 2019PASJ...71..114A <em>Optical Light Curves (in the ForcedSource table):</em> SDSS DR7: 2009ApJS..182..543A SDSS II Supernova Survey: 2008AJ....135..338F <em>Astrometry (i.e., parallax, proper motion):</em> Gaia EDR3: 2021A&amp;A...649A...1G NOIRLab Source Catalog DR2: 2021AJ....161..192N <em>NIR in XMM-LSS (VISTA/VIDEO): </em>2013MNRAS.428.1281J <em>NIR in Stripe 82 (UKIDSS):</em> 2006MNRAS.367..454H 2007MNRAS.379.1599L 2008MNRAS.384..637H 2009MNRAS.394..675H <em>Optical u-band in XMM-LSS (CFHTLS):</em> 2012yCat.2317....0H <em>MIR in XMM-LSS </em>(Spitzer DeepDrill): 2021MNRAS.501..892L <em>MIR in Stripe 82 </em>(SpIES): 2016ApJS..225....1T <em>FIR</em> (Hershel/HELP): 2019MNRAS.490..634S <em>Radio</em> (FIRST): 1994ASPC...61..165B <em>HighZ QSOs: </em> 2016ApJ...819...24W 2016ApJ...829...33Y <em>SDSS Spectroscopy:</em> SDSS DR16: 2020ApJS..249....3A SDSS DR16 Quasar Catalog: 2020ApJS..250....8L