61 citations · 211 across the 8 of their papers we have counts for
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The Observed Age Gradient in the Milky Way -- as a Test for theories of spiral arm structure
Jacques P Vallee
Some important predictions from 4 main models of spiral arm formation are tested here, using observational data acquired for the Milky Way galaxy. Many spiral arm models (density w…
Arm Tangents and the spiral structure of the Milky Way ; the Age Gradient
Jacques P Vallee
From the Sun, a look at the edge of each spiral arm in our Milky Way (seen tangentially, along the line of sight) can yield numerous insights. Using different arm tracers (dust, ma…
A low density-wave spiral pattern speed, from the tracer separations (age gradient) across a spiral arm in the Milky Way
Jacques P Vallee
We observe the density wave angular pattern speed OMEGA-p to be near 12 to 17 km / s / kpc, by the separation between a typical optical HII region (from the spiral arm dust lane) a…
Statistics on 24 spiral galaxies having different observed arm locations using different arm tracers
Jacques P Vallee
The density wave theory predicted some physical offsets among different tracers of star formation. To test this prediction, here we compiled data on 40 galaxies searched observatio…
Spatial offsets between interstellar bone-like filaments, radio masers, and cold diffuse CO gas, in the Scutum spiral arm
Jacques P Vallee
The advent of more precise measurements of distance estimates for some objects (bayesian estimates for filaments, trigonometric estimates for masers) permits a better comparison of…
Spatial and velocity offsets of Galactic masers from the centers of spiral arms
Jacques P Vallee
Some galactic theories of spiral arms predict an offset between different tracers of star formation. Our goal here is to find such an offset between the observed location of radio…