XMM-Newton Science Analysis System


omsrclistcomb (omsrclistcomb-2.24) [xmmsas_20230412_1735-21.0.0]

AB Magnitudes and Fluxes

AB magnitudes (see Oke, J.B. 1974, ApJS, 27, 21) and fluxes are given for each filter $(in\;units\;of\;ergs sec\sp{-1} cm\sp{-2} \AA\sp{-1}\;)$

In the header of the table the keywords ABM0X, ABF0X and E2JYX are given for each filter (where X is a filter). The keywords give the AB magnitude zero-point, the conversion factor from count-rate to AB flux and the conversion factor from flux to Janskys, respectively. The first two values are obtained from the OM calibration files.