🚀 go-pugleaf

In article <1i85suINN1s2@uwm.edu> gwc@csd4.csd.uwm.edu (Greg F Walz Chojnacki) writes:

   From article <1993Jan3.210002.19066@ee.ubc.ca>, by davem@ee.ubc.ca (Dave Michelson):
   > Not too long ago (but I don't remember where :-(, I read that some astronomers
   > had convinced themselves that our Galaxy is actually a barred spiral.  I haven't
   > seen any references to it since, though.  Does anyone else recall seeing such a
   > report or care to comment?
   > 
   > Previously, the evidence of spiral arm tracers such as O and B stars and
   > HII regions had suggested that our galaxy possesses a rather tightly wound
   > spiral structure...  

   Leo Blitz (U of MD) and David Spergel (Princeton) reported in Jan. 90 (at
   the AAS meeting) that their analysis of the motion of hydrogen clouds and
   found that outer clouds move in nearly circular orbits in the outer regions,
   but more and more elliptically as one looked closer to the galaxy's center.
   Their interpretation is that there is indeed a bar. 

   Sorry, I can't tell you where they published their results; I only heard 
   their talk at the AAS meeting.

   Greg

"Detection of a Large-Scale Stellar Bar in the Milky Way"
Martin D. Weinberg (UMass)
ApJ 384:81

The author uses AGB star tracers selected using IRAS variable sources and
highly robust harmonic analysis.

-- Tim