Historical light curve of 1WGA J0447.9-0322 from the Asiago plate archive

Roberto Nesci, Michela Mandalari, Alfredo Segafredo

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We present the first historic light curve of 1WGA J0447.9-0322 from 1962 to 1991, built using 65 plates of the Asiago 67/92 Schmidt telescope and 205 plates of the 40/50 one. The source shows an evident long term dimming of about 1 magnitude with small short term variations superposed. No strong flare were detected. The nature of the source is discussed on the basis of its overall Spectral Energy Distribution, built using literature data and recent X-ray and UV-optical SWIFT data.