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19982026
most citedGaia Data Release 2. Summary of the contents and survey properties

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astro-ph2006★ 10 cited

Spectroscopy of the brightest optical counterparts of X-ray sources in the direction of M~31 and M~33

D. Hatzidimitriou, W. Pietsch, Z. Misanovic +2

Recent surveys of the Local Group spiral Galaxies M31 and M33 with XMM-Newton yielded a large number of X-ray sources. As part of the effort to identify and classify the objects re…