3-D MAPPING OF THE GALACTIC NUCLEAR REGIONTHE GALACTIC CENTER OF OUR GALAXY PROVIDES AN EXCELLENT LABORATORY TO STUDY THE STAR FORMATION MODE AND HISTORY AS WELL AS THE STRUCTURE AND DYNAMICS OF STARS AND GAS UNDER AN EXTREME GALACTIC NUCLEAR ENVIRONMENT. WE PROPOSE A COMPREHENSIVE DATA ANALYSIS PROGRAM TO INVESTIGATE THE 3-D PROPERTIES OF THE REGION ENCLOSED BY THE CENTRAL MOLECULAR ZONE OF THE GALAXY. WE WILL CAPITALIZE ON AN EXTENSIVE DATA SET NOW AVAILABLE FROM PLANCK HERSCHEL SPITZER AND HUBBLE SPACE TELESCOPES AS WELL AS THE LARGE MILLIMETER TELESCOPE AND OTHER GROUND-BASED FACILITIES. THIS DATA SET PROVIDES SENSITIVE HIGH-RESOLUTION PROBES OF THE REGION OVER THE MILLIMETER TO NEAR-IR WAVELENGTH RANGE. THE DATA SET TOGETHER WITH DEDICATED STATE-OF-ART ANALYSIS TOOLS THAT WE HAVE BEEN DEVELOPING WILL ENABLE US TO OBTAIN (1) THE FIRST FULL-SPACING MILLIMETER DUST EMISSION IMAGE OF THE REGION AT A RESOLUTION BETTER THAN 10 ARCSECONDS (FWHM) (2) THE COLUMN DENSITY TEMPERATURE AND OPACITY SPECTRAL INDEX DISTRIBUTIONS OF DUSTY GAS; (3) THE MAPPING OF DUST EXTINCTION TOWARD INDIVIDUAL STARS; (4) THE LINE-OF-SIGHT LOCATIONS OF INDIVIDUAL DENSE CLOUDS (5) THE GLOBAL SPATIAL DISTRIBUTION AND FORMATION HISTORY OF STARS AND (6) THE CHARACTERIZATION OF ENVIRONMENT EFFECTS ON STELLAR AND GAS DYNAMICS IN THE REGION. THE COMBINED ANALYSIS OF THE DUST EMISSION AND EXTINCTION WILL REPRESENT A MAJOR STEP FORWARD IN DETERMINING THE PROPERTIES OF THE DUSTY GAS AS WELL AS ITS EFFECT ON THE STELLAR LIGHT OBSERVATIONS OF THE REGION. THIS BODY OF WORK WILL LIKELY HAVE STRONG IMPLICATIONS FOR OUR UNDERSTANDING THE STELLAR AND GAS PROPERTIES IN OTHER GALACTIC NUCLEI AND THEIR ROLE IN REGULATING THE EVOLUTION OF GALAXIES AS WHOLE.
$305,418FY2017National Aeronautics and Space AdministrationNASA
University Of Massachusetts, Amherst MA