Mass Distribution in the Central Few Parsecs of Our Galaxy

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Near-IR observations of the central few parsecs of our galaxy from the HST/NICMOS have been analyzed to obtain a stellar surface number density profile. We have cross-identified our photometry with the Keck high-resolution spectrometry for the central 0.5 pc of our galaxy to distinguish evolved late-type stars from early-type stars, and use the former as tracer population for the estimation of mass distribution in the central region. We perform several statistical tests to find the best-fitting models for density and velocity dispersion profiles of the tracer population. Then using the Jeans equation, we obtain the mass distribution in the central region of our galaxy, and discuss star formation environment in that region.

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