1 / 37

Virgo Survey: Single Peak Galaxies

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.

sierra
Download Presentation

Virgo Survey: Single Peak Galaxies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Virgo Survey:Single Peak Galaxies • 祖父江義明 • U. Tokyo

  2. 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

  3. BIMA SONG • (BERKELEY ILLINOIS MARYLAND ASSOCIATION • CO Survey of Nearby Galaxies)

  4. OVRO • (Owens Valley Radio Observatory )

  5. IRAM Plateau de Bure Interferometer

  6. Nobeyama mm Array NMA

  7. CO-Line： No Extinction Central Concentration High Velocity Resolution High Spatial Resolution High Sensitivity

  8. 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

  9. NGC 3079

  10. PVDiagram • HI (Irwin & Seaquist 91) • CO (NMA)

  11. 超高密度分子コア • 100 pc 銀河系と比較

  12. Discussion: “Single Peaks” vs “Twin Peaks” Activity Twin Ico,center Virgo central rotation curves Virgo Nearby gal. Nuclear steep rise = Universal !

  13. Core • Bulge • Disk • Halo Surf. Mass Density

  14. ALMA RC (1pc=0.01”)(1) Detailed RC 1– 100pc(2) MassDistribution 1-100 pc, BH-connection

  15. “Speak” vs “Twin”

  16. ”Twin” to “Single”

  17. “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

  18. Ico=5660 K km/s-1

  19. 303 K km/s-1

  20. 744 K km/s-1

  21. 246 K km/s-1

  22. 337 K km/s-1

  23. 762 K km/s-1

  24. Single PeaksIco > 500 K km/s

  25. 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

  26. [1] Bar accretion“Twin peaks” + Ring [2] Feeding Nuclei [3] Nucl. Mol. Core,“Single Peak” preburst [4] Start burst/AGN

  27. Conversion X AnomalyX < 0.1 x 1020 H2 / K km-1 MetallicityTemperature

  28. ALMA Mappping (1pc=0.01”)Detailed distribution/Dynamics of ISM in M.Cores 1– 100pcHigher Transitions& Various Species in Sub-mmISM Physics/Chemistry

  29. 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

  30. 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。

  31. V NMA to ALMA connection

More Related