Milky Way "Ringing Like A Bell" From ...

Milky Way "Ringing Like A Bell" From 100 Million Year-Old Collision

There are 1 comment on the The Escapist story from Jul 10, 2012, titled Milky Way "Ringing Like A Bell" From 100 Million Year-Old Collision. In it, The Escapist reports that:

Armed with ever-developing technology in a massive galaxy, it's no surprise that we're always discovering new tales from the history of our little corner of the universe.

Join the discussion below, or Read more at The Escapist.

“Geologist [I'm Climate Change]”

Since: Mar 07

formerly Nuneaton

#1 Jul 11, 2012
In a look over the stars seen in the Hipparcos data and a copy of the Sky catalogue 2000.0 I have found the same effect where ripples of gas and dust loop out of the midplane and back getting in the way of relatively distant <1000Pc blue stars in the nearby associations.

It appears that the ripple effect is a feature of gravitational interaction but may have a much more mundane cause. The likely culprit is the tidal interaction of the LMC & SMC galaxies which are massive enough to distort the gas & dust in the disc out of plane but not enough to produce a tidal tail because the bulk disc is far to massive.

The next question is how long the interaction between the LMC/SMC and milky way has been going on. From what I can see so far, the MW. has bypassed the Magellanic clouds, wrapped up the LMC barred spiral into a deinoflagellate shape, and turned the SMC into a tidal tail and is now dragging both galaxies behind us with both likely to fall back onto the disc in the future.

Be interesting to see.

Have a nice day: Ag

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