Spitzer Young Stellar Object VARiability (YSOVAR)

The YSOVAR (Young Stellar Object VARiability) observing program on the Spitzer Space Telescope obtained the first extensive mid-infrared (IRAC 3.6 and 4.5 micron) time series photometry of the Orion Nebula Cluster, plus smaller fields in 11 other star-forming cores (AFGL 490, NGC 1333, Mon R2, GGD 12-15, NGC 2264, L1688, Serpens Main, Serpens South, IRAS 20050+2720, IC 1396A, and Ceph C). It is a sister project to the Coordinated Synoptic Investigation of NGC 2264, and the data set contains ~29,000 unique objects with light curves in either or both IRAC channels. Initial YSOVAR results were described in Morales-Calderon et al. (2011). Rebull et al. (2014) describes the details of target selection, data reduction, and other conventions established for this project.

This dataset or service is made available by the Infrared Science Archive (IRSA) at IPAC, which is operated by the California Institute of Technology under contract with the National Aeronautics and Space Administration.