Dense Molecular Medium in Active Galaxies

Transcription

1 4th International Symposium on New Trends of Physics: Recent Advances in Astrophysics and Planetary Science - from the early universe to the Solar system - Dense Molecular Medium in Active Galaxies March 1st 2nd, 2005 Sapporo, Japan K. Kohno Institute of Astronomy University of Tokyo

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3 Results Introduction

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5 HST: dusty disk VLBA: Inner jet & Accretion disk VLA: extended radio jet Optical: host galaxy 320 arcsec (62 kpc) 4 arcsec (780 pc) 0.02 arcsec (4 pc) Jaffe et al. 1993, Nature, 364, 213 Jones et al. 2000, ApJ, 534, 165

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10 AGN - Starburst connection Radiation SNe Stars are formed from dense molecular cores AGN starburst connection Fueling Jet/outflow Radiation Fueling Obscuring Obscuring torus could consists of dense molecular material structure of AGN/fueling

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14 nucleus Contour: HCN blue & red shifted components (NMA) Grey scale: radio 6 cm (VLA) Kohno et al. 1996, ApJ, 461, L29

15 Kohno et al. 1999, ApJ, 511, 157

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17 Results Survey

18 RAINBOW:7-element interferometry (six 10 m dishes + 45 m)

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22 Results Results

23 1 kpc NGC 1097: Kohno et al. 2003, PASJ, 55, L1 NGC 5033: Kohno et al. 2003, PASJ, 55, 103 NGC 7469: Okiura et al. 2004, PASJ, in prep. Other galaxies: Kohno et al. 2004, in prep.

24 1 kpc NGC 3079: Koda et al. 2002, ApJ, 573, 105 NGC 4501: Onodera et al. 2004, PASJ, 56, in press. NGC 6951: Kohno et al. 1999, ApJ, 511, 157 Other galaxies: Kohno et al. 2004, in prep.

25 E N V H +[NII] SBbc, D = 14 Mpc Quillen et al. 1995, AJ, 110, 156

26 Kohno et al. 2003, PASJ, 55, L1

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28 Helfer & Blitz 1995 Kohno et al. 2005, in prep.

29 Kohno et al. 2005, in prep. Significant enhancement of HCN can also be seen in spectra.

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31 Flux at the nucleus: 31 2 Jy/b km/s Jy/b km/s Jy/b km/s Kohno et al. in prep.

32 Kohno et al in prep.

33 Kohno et al. 2005, in prep.

34 Kohno et al. 2005, in prep.

35 Summary of results: Results Line ratios

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37 Seyfert Starburst

38 Composite : Seyfert nuclei with nuclear starburst Seyfert Starburst

39 Pure Seyfert : X-ray irradiated dense molecular gas (XDR) Seyfert Starburst

40 Results Discussion

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42 log(fractional abundance) normal dark clouds X-ray from AGN log( /n H ) ionization rate/gas density

43 Seyfert nucleus Dense molecular material = nuclear SB- AGN connection e.g. NGC 3227, 4051, 6764 = pure Seyferts e.g. NGC 1068, 1097, 5194, 5033

44 Usero et al., 2004, A&A, 419, 897

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47 F [10-15 W/m 2 / m] Wavelengths [ m] Wavelengths [ m] Imanishi 2002, ApJ, 569, 44

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49 Results Toward ALMA

50 Atacama Large Millimeter/Submillimeter Array meter diameter antennas ALMA compact array (ACA): 4 12-m m Frequency bands covering 90 GHz to 900 GHz Wide band (4 GHz) spectro-correlator system Full operation 2012

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52 NGC MASS JHK 1 arcmin or 8 kpc at D = 28 Mpc

53 RAINBOW interferometer Imanishi et al. 2004, AJ, 128, 2037

54 Pure Seyfert Composite Seyfert Starburst

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56 ALMA Band 3 Band 1

57 Jackson et al. 1995, ApJ, 438, 695

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59 HST Hubble Heritage Isaac Newton Telescope INT-WFC 12 CO(1-0) NMA 12 CO(2-1) SMA 5 Antenna Observation 12 CO(3-2) SMA 4 Antenna Observation 810 pc Sakamoto et al. (1999, ApJS, 124, 403) Sawada-Satoh et al. Matsushita et al. (2004, ApJL, 616, L55)

60 Okiura et al. 2005, in prep. Davies et al. 2004, ApJ, 602, 148

61 ASTE: Results a precursor to ALMA

62 Joint project among NAOJ, Univ. Tokyo, Nagoya, Osaka Pref. & U. Chile

63 ASTE at Pampa la Bola (4860m) Generators & Fuel Tank Telescope Satellite Communication Storage etc.

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65 Feel at home!

66 200 kw,15000 litters 2

67 Scan position monitor Quick look of spectra Antenna console Remote camera

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69 Corrugated feedhorn LNA & IF out Mixer holder EM PM LO injection wageguide Univ. of Tokyo Osaka Pref. Univ Nagoya Univ. & NAOJ Muraoka 2005 Master thesis

70 (left) More than 3000 spectra were obtained. (bottom) Optical image of Carina nebula. Mapped area with ASTE is indicated. Yamaguchi et al. 2003

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