Long-Slit Spectroscopy of the Nucleus of M31

Physics

Scientific paper

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Hst Proposal Id #5137 Galaxies &Amp, Clusters Nearby Galaxies

Scientific paper

Spectra from 3600-5400A will be taken at the center of M31, with the FOC long-slit spectrograph. The central arcsec will be well enough exposed to yield good-S/N spectra that are only 1 pixel (28 mas) high; farther out, successive rows will be averaged. The aim is to get a high-spatial-resolution rotation curve and also to get velocity dispersion as a function of position. Parallel WFPC2 exposures will yield population information at the edge of the bulge.

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