Secular evolution of stellar bars, vertical instabilities and starbursts

Details Secular evolution of stellar bars, vertical instabilities and starbursts Secular evolution of stellar bars, vertical instabilities and starbursts

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005assl..329p..48m&link_type=abstract

Starbursts: From 30 Doradus to Lyman Break Galaxies, Held in Cambridge, UK, 6-10 September 2004. Edited by R. de Grijs and R.M.

Astronomy and Astrophysics

Astrophysics

Scientific paper

Vertical instabilities, buckling, in stellar bars weaken and shorten the bar. This can interrupt the bar-induced gas inflow into the central kpc of a galaxy for ˜ 1 Gyr. The subsequent bar growth in length and in amplitude can lead to a recurrent buckling. The first buckling results in the formation of a peanut/boxy-shaped bulge when viewed edge-on, and the second buckling forms an X-shaped bulge. The secular growth of the bar and the recurrent buckling can lead to important observational corollaries in bar fraction, bar detection, offset dust lanes, bar size-to-corotation ratio, etc.

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