27 September 2001 CfA Colloquium

Title: The Inner Kiloparsec Regions of Spiral Galaxies

Speaker: Bruce Elmegreen


Star formation and dust properties of the inner kpc regions of galaxies, as revealed by HST, are reviewed. The balance between the various mechanisms of star formation may be different there than in the main disks of galaxies because of the similarity between the local dynamical time in the nuclear region and the lifetime of an O-type star. Clusters may reach higher masses because of the larger pressures. In nuclear disks without star formation, faint dust structures reveal a turbulent nature of the interstellar medium.

Reference for students:

"Dust Spirals and Acoustic Noise in the Nucleus of the Galaxy NGC 2207," Elmegreen, B.G., Elmegreen, D.M., Brinks, E., Yuan, C., Kaufman, M., Klaric, M., Montenegro, L., Struck, C., and Thomasson, M. Astrophysical Journal Letters, 503, L119 (1998)

Lunch with the students on Thursday, September 26 at 1:00 in A-101.