10677( 1) - 04/05/05 12:32 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10677 Version: 1 Check-in Date: 05-Apr-2005 16:32:43 1.Proposal Title: The Influence of Bars on the Centers of Galaxies ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle 4. Parallel Pointing Tolerance AR 14 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Dr. Paul Martini Smithsonian Institution Astrophysical Observatory ------------------------------------------------------------------------------------ 6. Abstract HST observations have recently discovered pronounced differences between the circumnuclear morphology of barred and unbarred galaxies. This discovery provides some of the first evidence that bars directly impact the structure of the circumnuclear ISM and has many implications for bar-induced matter transport, bulge growth, and black hole fueling. I propose to use a new, physically motivated measure of bar strength and the structure map technique of Pogge & Martini to quantify how circumnuclear structure is impacted by bar strength, as well as other galaxy properties such as morphological type and luminosity. This analysis will provide important new insight into how bars drive evolution at the centers of galaxies, particularly what fraction and type of bars have any significant impact at all on their circumnuclear region. ------------------------------------------------------------------------------------ 10677( 1) - 04/05/05 12:32 - [ 2] Summary Form for Proposal 10677 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category AR ------------------------------------------------------------------------------------------------------------------------------------