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Virgo Survey: Single Peak Galaxies. 祖父江義明 U. Tokyo. A LMA 時代の銀河研究 1.日米欧干渉計事情 2. ALMA は干渉計 3. NMA からの 正面突破. BIMA SONG ( BERKELEY ILLINOIS MARYLAND ASSOCIATION CO Survey of Nearby Galaxies). OVRO (Owens Valley Radio Observatory ). IRAM Plateau de Bure Interferometer.
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Virgo Survey:Single Peak Galaxies • 祖父江義明 • U. Tokyo
ALMA時代の銀河研究 1.日米欧干渉計事情 2.ALMAは干渉計 3. NMAからの正面突破
BIMA SONG • (BERKELEY ILLINOIS MARYLAND ASSOCIATION • CO Survey of Nearby Galaxies)
OVRO • (Owens Valley Radio Observatory )
IRAM Plateau de Bure Interferometer
CO-Line: No Extinction Central Concentration High Velocity Resolution High Spatial Resolution High Sensitivity
45m Milky Way Galactic Center D = 10 kpc Θ=15” d=1 pc NMA Virgo Cluster Galaxies D = 16 Mpc Θ=1” d=100 pc ALMA Nearby Cluster Galaxies D = 10 - 20 Mpc Θ=0.01” d=1 pc
PVDiagram • HI (Irwin & Seaquist 91) • CO (NMA)
超高密度分子コア • 100 pc 銀河系と比較
Discussion: “Single Peaks” vs “Twin Peaks” Activity Twin Ico,center Virgo central rotation curves Virgo Nearby gal. Nuclear steep rise = Universal !
Core • Bulge • Disk • Halo Surf. Mass Density
ALMA RC (1pc=0.01”)(1) Detailed RC 1– 100pc(2) MassDistribution 1-100 pc, BH-connection
“Single peaks” Accretion-Activity Cycle (Ho et al. 1997 ApJ.S.,112, 315) Gas exhaust. Burst, Activity Post-burst S-peak, mol. core Pre-burst accretion
High-Density Molecular Core for usual Conv.X (1x1020 H2/ K km-1)N(H2) > 1023 H2/cm2 M(H2) ~ a few 10^8 Msun (cf Mdyn ~ 10^9 Msun) SF surpresed=Preburst core
[1] Bar accretion“Twin peaks” + Ring [2] Feeding Nuclei [3] Nucl. Mol. Core,“Single Peak” preburst [4] Start burst/AGN
Conversion X AnomalyX < 0.1 x 1020 H2 / K km-1 MetallicityTemperature
ALMA Mappping (1pc=0.01”)Detailed distribution/Dynamics of ISM in M.Cores 1– 100pcHigher Transitions& Various Species in Sub-mmISM Physics/Chemistry
ALMA時代の銀河研究 1.銀河の骨格、基幹構造の研究 2.極限状態での星間物理と活動 3.密度波、銀河衝撃波、 GスケールSFの見直し
ALMA時代の銀河研究 2003-2007 1.日米欧:敵情を知る。 2.ALMAは干渉計である。 NMAを基艦に正面突破。
V NMA to ALMA connection