Combining Photometric and Astrometric Data to Identify Stellar Clustering at KPC-Distances

Details Combining Photometric and Astrometric Data to Identify Stellar Clustering at KPC-Distances Combining Photometric and Astrometric Data to Identify Stellar Clustering at KPC-Distances

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..197t&link_type=abstract

"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me

Physics

Ob Association, Spectroscopic Distance, Colour-Colour Diagram, Proper Motion

Scientific paper

A field of 0.5° × 0.5° , at l ˜ 265° and b ˜ -2° , is used as a test bed for stellar structure identification. Spectroscopic and photometric observations were used to estimate distances to the early-type stars inside in the field. Positions, distances and proper motions were combined in a series of statistical analysis to identify clustering. In this way we are able to characterize stellar structures up to distances of approximately 8 kpc, probably as far as the outer spiral arm.

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