Constraints on Spiral Modes Propagating in the Solar Neighborhood

Details Constraints on Spiral Modes Propagating in the Solar Neighborhood Constraints on Spiral Modes Propagating in the Solar Neighborhood

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003dda....34.0602q&link_type=abstract

American Astronomical Society, DDA meeting #34, #06.02; Bulletin of the American Astronomical Society, Vol. 35, p.1037

Astronomy and Astrophysics

Astronomy

Scientific paper

Hipparcos has revealed a lot of structure in the solar neighborhood stellar velocity distribution. Clumps seen in blue stars are often also present in the older stars, suggesting that these clumps are not due to evaporating clusters but are due to coherent spiral modes. I will place constraints on the pattern speeds and perturbation strengths of spiral modes which could be responsible for this structure.

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