Virgo CO Survey of Molecular Nuclei Yoshiaki Sofue Dept. Phys

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1 Virgo CO Survey of Molecular Nuclei Yoshiaki Sofue Dept. Phys
Virgo CO Survey of Molecular Nuclei Yoshiaki Sofue Dept.Phys., Meisei Univ. @ALMA WS Nearby Galaxies, NAOJ 2011 Feb. 10

2 GAMMA Project with ALMA Virgo Galaxy MAss MApping ー銀河Dynamics空白地帯を埋めるー

3 技術、サイエンス

4 ALMA時代の銀河研究 １．日米欧：敵情を知れ。 ２．ALMAは干渉計である。 3. NMAでの研究を基盤、正面突破
(本質的にマッピングマシンである。） 3. NMAでの研究を基盤、正面突破

5 (BERKELEY ILLINOIS MARYLAND ASSOCIATION CO Survey of Nearby Galaxies)
BIMA SONG (BERKELEY ILLINOIS MARYLAND ASSOCIATION CO Survey of Nearby Galaxies)

6 (Owens Valley Radio Observatory )
OVRO /CARMA (Owens Valley Radio Observatory )

7 Plateau de Bure Interferometer
IRAM Plateau de Bure Interferometer

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12 Nobeyama mm Array NMA

13 Visible from ALMA! Why Virgo? Cepheid Distance 16 Mpc CO rich Spirals
All-wave Atlases (Opt, Radio, HI, IR, FIR, X) Visible from ALMA!

14 1. Nuclear Dynamics & Massive cores

15 NGC 3079 RAINBOW RB+C+D RB

16 NGC 3079 P-V Diagram: HI vs CO
HI (Irwin & Seaquist 91) CO (NMA)

17 NGC 3079 CO PVD　→ RC　→ Mass Distribution

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19 質量分布ー直接導出 > >

20 Surf. Mass Density Massive Core Bulge Disk Dark Halo

21 Black hole connection NGC 3079

22 2. “Single peak” vs “Twin peaks” Nuclear ISM Physics

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30 V ”Twin” to “Single”

31 “Single peaks”

32 Molecular Nucleus (Single Peaks） Rate BIMA. 5”. 32% (14/44) NMA-OV. 4”
Molecular Nucleus　 (Single Peaks） Rate BIMA 5” 32% (14/44) NMA-OV 4” 40% (8/20) Virgo 3” 33% (5/15) NMA Unifo 1.5” 66% (4/6)

33 3. Uniform wt maps in place for RAINBOW

34 Ico=5660 K km/s-1 　

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38 4. ISM Physics of S-peaks

39 Single Peaks Ico > 500 K km/s N(H2) > 1023 H2 cm-2

40 超高密度分子コア 100 pc 銀河系と比較

41 High-Density Molecular Core in R~100 pc (if conv. X=1x1020 H2/ K km-1)
High-Density Molecular Core in R~100 pc (if conv.X=1x1020 H2/ K km-1) Column Density N(H2) > 1023 H2 cm-2 Gass Mass M(H2) ~ Several108 Msun Dynamical mass ~ 109 Msun Schimidt Law

42 SFR∝Σ1.0(gas) (Schimidt law) (Komugi et al. 2004)
X X X X X N3079

43 SFR=Schmidt / Starburst
[1] Bar accretion “Twin peaks” + Ring Temporary [2] Feeding Nuclei [3] Nucl. Mol. Core, “Single Peak” Stationary SFR=Schmidt / Starburst

44 質量空白域 or DM cusp Rc

45 銀河質量研究の空白領域 BH - Bulge Log R

46 BH – Bulge – Disk 　 NGC 3079

47 BH formation in core/cusp
Rc

48 作業仮説 Flat RC (Isothermal) beyond BH.

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50 MBH ～ MG0.9 Log MBH～-1.8MB,disk

51 Log MBH ～ -1.8 MB,disk Log MBH MB,Bulge MB,disk Kormendy 2000

52 １．野辺山、ＡＬＭＡ 回転曲線 ２．質量分布 ３．銀河研究の空白地帯 ４．対数回転曲線
　　１．野辺山、ＡＬＭＡ　回転曲線 ２．質量分布 ３．銀河研究の空白地帯 ４．対数回転曲線 　

53 d=1 pc d=1 pc NMA Virgo D = 16 Mpc Θ=1” d=100 pc 45m Milky Way
D = 10kpc Θ=15” d=1 pc ALMA Virgo D = 16Mpc Θ=0.01” d=1 pc

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