Presentation is loading. Please wait.

Presentation is loading. Please wait.

Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center from 140 pc West to 85 pc East of Sgr A* 66th OSU International Symposium, June.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center from 140 pc West to 85 pc East of Sgr A* 66th OSU International Symposium, June."— Presentation transcript:

1 Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center from 140 pc West to 85 pc East of Sgr A* 66th OSU International Symposium, June 21, 2011 Takeshi Oka, Chris MORONG, University of Chicago, Chicago Tom Geballe, Gemini Observatory, Hilo Nick Indriolo, Ben McCall, University of Illinois at Urbana-Champaign, Urbana Miwa Goto, Max-Planck-Institute for Astronomy, Heidelberg Tomonori Usuda, Subaru Telescope, Hilo Harvey Liszt, National Radio Astronomy Observatory

2 α+α+ λ ε+ε+ ε-ε- η+η+ θ-θ- θ+θ+ δ+δ+ 30 pc Oka, Geballe, Goto, Usuda, McCall, 2005, ApJ, 632, 882 GCS 3-2 Goto, Usuda, Nagata, Geballe, McCall, Indriolo, Suto, Henning, Morong, Oka, 2008, ApJ, 688, 306 ,  Geballe, Oka, 2010, ApJ, 709, L70 T ~ 250 K n < 100 cm -3  L > 2.2  10 5 cm/s  = 2  10 -15 s -1  L > 35 pc

3 Two sightlines with remarkable H 3 + spectrum α 140 pc West ι 85 pc East Geballe and Oka, 2010, ApJ, 709, L70-73 0 – 30 pc East Quintuplet, α, ι

4 “alpha”, 140 pc West, 2.7 pc below Alpha Geballe and Oka, ApJ 709, L70-73 (2010) H. Liszt, ApJL, 82, 495 (1992) 13 CO Sgr E, 144 pc West, 20 pc above S Sgr E 3 kpc SA

5 Alpha, EMR, warm and diffuse Geballe and Oka, ApJ 709, L70-73 (2010) N(1,1) = 1.86 (12)  10 15 cm -2 N(3,3) = 1.33 (27)  10 15 cm -2 T ~ 300 K Goto et al., PASJ, 64, L13-17 (2010)

6 α β α 138.7 pc W 2.65 pc below β 133.4 pc W 4.20 pc below α+ 138.0 pc W 6.12 pc below α+α+ Three stars within 7 pc of angular distance

7   ++  ++ α β α+α+

8 Geballe and Oka, ApJ 709, L70-73 (2010) Iota, the Monster “iota”, 85 pc East, Sgr B

9 H 3 + in Iota versus H 2 O + and 13 CH + in Sgr B2 Peter Schilke P. Schilke et al., A&A, 521, L11, 2010 Edith Falgarone H3+H3+ H2O+H2O+

10 Simple chemistry of H 3 + : N(H 3 + ) →  ·L  L = 2 k e N(H 3 + ) (n C /n H ) SV R X / f(H 2 ) 7.3 ×10 -8 cm 3 /s1.6 ×10 -4 < 1 3.1 ×10 15 cm -2 > 3  L > 2.2 ×10 5 cm/s  L 10 -17 s -1 > 7 kpc 10 -16 s -1 > 700 pc 10 -15 s -1 > 70 pc 0.1! ?

11 α+α+ λ ε+ε+ ε-ε- η+η+ θ-θ- θ+θ+ δ+δ+ 30 pc Oka, Geballe, Goto, Usuda, McCall, 2005, ApJ, 632, 882 GCS 3-2 Goto, Usuda, Nagata, Geballe, McCall, Indriolo, Suto, Henning, Morong, Oka, 2008, ApJ, 688, 306 ,  Geballe, Oka, 2010, ApJ, 709, L70 T ~ 250 K n < 100 cm -3  L > 2.2  10 5 cm/s  = 2  10 -15 s -1  L > 35 pc

12

13

14 Ubiquity of H 3 + Sgr A* to 30 pc East 30 pc Goto, et al. 2008, ApJ, 688, 306

Download ppt "Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center from 140 pc West to 85 pc East of Sgr A* 66th OSU International Symposium, June."

Similar presentations

Dissociative Recombination of Cold H 3 + and its Interstellar Implications  T. Oka (University of Chicago), T. R. Geballe (Gemini Observatory)  A. J.

Dissociative Recombination of Cold H 3 + and its Interstellar Implications  T. Oka (University of Chicago), T. R. Geballe (Gemini Observatory)  A. J.
Implications of the H 3 + + H 2  H 2 + H 3 + reaction for the ortho- to para-H 3 + ratio in interstellar clouds Kyle N. Crabtree, Lt. Col. Brian A. Tom,

Implications of the H H 2  H 2 + H 3 + reaction for the ortho- to para-H 3 + ratio in interstellar clouds Kyle N. Crabtree, Lt. Col. Brian A. Tom,
Estimated SOFT X-ray Spectrum and Ionization of Molecular Hydrogen in the Central Molecular Zone of the Galactic Center Masahiro Notani and Takeshi Oka.

Estimated SOFT X-ray Spectrum and Ionization of Molecular Hydrogen in the Central Molecular Zone of the Galactic Center Masahiro Notani and Takeshi Oka.
Ionization of H 2 by X-rays in the Central Molecular Zone of the Galactic Center Masahiro Notani and Takeshi Oka Department of Astronomy and Astrophysics,

Ionization of H 2 by X-rays in the Central Molecular Zone of the Galactic Center Masahiro Notani and Takeshi Oka Department of Astronomy and Astrophysics,
Imaging Arp 220 in CO 6-5 and dust at 100 pc resolution with ALMA C. Wilson, (McMaster); N. Rangwala, J. Glenn, P. Maloney, J. R. Kamenetzky (Colorado);

Imaging Arp 220 in CO 6-5 and dust at 100 pc resolution with ALMA C. Wilson, (McMaster); N. Rangwala, J. Glenn, P. Maloney, J. R. Kamenetzky (Colorado);
The nature of the dust and gas in the nucleus of NGC 1068.

The nature of the dust and gas in the nucleus of NGC 1068.
Benjamin McCall and Takeshi Oka University of Chicago Kenneth H. Hinkle National Optical Astronomy Observatories Thomas R. Geballe Joint Astronomy Centre.

Benjamin McCall and Takeshi Oka University of Chicago Kenneth H. Hinkle National Optical Astronomy Observatories Thomas R. Geballe Joint Astronomy Centre.
銀河中心の H ３ ＋ Department of Astronomy and Astrophysics Department of Chemistry and The Enrico Fermi Institute, The University of Chicago 岡 武史 岡コロキウム 東京工業大学、

銀河中心の H ３ ＋ Department of Astronomy and Astrophysics Department of Chemistry and The Enrico Fermi Institute, The University of Chicago 岡 武史 岡コロキウム 東京工業大学、
Linear Analysis of Infrared CO Spectra Takeshi Oka Department of Astronomy and Astrophysics and Department of Chemistry, The Enrico Fermi Institute, University.

Linear Analysis of Infrared CO Spectra Takeshi Oka Department of Astronomy and Astrophysics and Department of Chemistry, The Enrico Fermi Institute, University.
The Non-Thermal Rotational Distribution of Interstellar H 3 + (ApJ, in press ) Takeshi Oka and Erik Epp, Department of Astronomy and Astrophysics, and.

The Non-Thermal Rotational Distribution of Interstellar H 3 + (ApJ, in press ) Takeshi Oka and Erik Epp, Department of Astronomy and Astrophysics, and.
The (3, 3) metastable rotational level of H 3 + Takeshi Oka Department of Chemistry and Department of Astronomy and Astrophysics The Enrico Fermi Institute,

The (3, 3) metastable rotational level of H 3 + Takeshi Oka Department of Chemistry and Department of Astronomy and Astrophysics The Enrico Fermi Institute,
Galactic Center Region Concentrated stars and interstellar matter High Energy Density (gravity, MHD, kinetic) Strong magnetic field :B ~ mG High external.

Galactic Center Region Concentrated stars and interstellar matter High Energy Density (gravity, MHD, kinetic) Strong magnetic field :B ~ mG High external.
Revelation of a vast amount of warm (~ 250 K) and diffuse (≤ 100 cm -3 ) gas and high ionization rate (ζ > 10 -15 s -1 ) in the Central Molecular Zone.

Revelation of a vast amount of warm (~ 250 K) and diffuse (≤ 100 cm -3 ) gas and high ionization rate (ζ > s -1 ) in the Central Molecular Zone.
H 3 +, in planetary Ionospheres: Emission Spectrum 岡 武史 Department of Astronomy and Astrophysics, Departmen of Chemistry and The Enrico Fermi Institute,

H 3 +, in planetary Ionospheres: Emission Spectrum 岡 武史 Department of Astronomy and Astrophysics, Departmen of Chemistry and The Enrico Fermi Institute,
Hot and Diffuse Gas near the Galactic Center Probed by Metastable H 3 + Thomas R. Geballe Gemini Observatory Miwa Goto Max Planck Institute for Astronomy.

Hot and Diffuse Gas near the Galactic Center Probed by Metastable H 3 + Thomas R. Geballe Gemini Observatory Miwa Goto Max Planck Institute for Astronomy.
Warm and diffuse gas and high ionization rate in the Galactic center revealed by observation of H 3 + Takeshi Oka Department of Astronomy and Astrophysics.

Warm and diffuse gas and high ionization rate in the Galactic center revealed by observation of H 3 + Takeshi Oka Department of Astronomy and Astrophysics.
Hot and diffuse gas near the Galactic center probed by metastable H 3 + Thomas R. Geballe Gemini Observatory Miwa Goto Max-Planck-Institut für Astronomie.

Hot and diffuse gas near the Galactic center probed by metastable H 3 + Thomas R. Geballe Gemini Observatory Miwa Goto Max-Planck-Institut für Astronomie.
H3+H3+. Search for hot and bright stars for H 3 + spectroscopy Near the Galactic center Takeshi Oka Department of Astronomy and Astrophysics and Department.

H3+H3+. Search for hot and bright stars for H 3 + spectroscopy Near the Galactic center Takeshi Oka Department of Astronomy and Astrophysics and Department.
Hot and Diffuse Gas near the Galactic Center Probed by Metastable H 3 + Thomas R. Geballe Gemini Observatory Miwa Goto Max-Planck-Institut für Astronomie.

Hot and Diffuse Gas near the Galactic Center Probed by Metastable H 3 + Thomas R. Geballe Gemini Observatory Miwa Goto Max-Planck-Institut für Astronomie.
October, 1970 H2S2H2S2 March 28-31, 1966, APS Durham, NC April 22, 1966, Invitation to give a seminar.

October, 1970 H2S2H2S2 March 28-31, 1966, APS Durham, NC April 22, 1966, Invitation to give a seminar.

Similar presentations

Ads by Google