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We plan to present new HST spectroscopic observations of the nucleus of M31. Our previous HST (pre-costar) observations indicate that one of the double peaks in the center of M31 may host a nuclear black hole, on the basis of the somewhat peaked velocity dispersion around it. Unfortunately the old HST observations have missed some of the important aperture positions covering the very center of the nucleus. The new HST observations will then allow us to complete the velocity measurements in these positions and to confirm the existence of the nuclear black hole in the center of M31.
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