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Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center

Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center from 140 pc West to 85 pc East of Sgr A*. Takeshi Oka , Chris MORONG, University of Chicago, Chicago Tom Geballe, Gemini Observatory, Hilo Nick Indriolo, Ben McCall, University of Illinois at Urbana-Champaign, Urbana

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Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center

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  1. Warm and Diffuse Gas and High Ionizzation Rate Near the Galactic Center from 140 pc West to 85 pc East of Sgr A* 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 66th OSU International Symposium, June 21, 2011

  2. T ~ 250 K n < 100 cm-3 L > 2.2  105 cm/s = 2  10-15 s-1 L > 35pc GCS 3-2 Oka, Geballe, Goto, Usuda, McCall, 2005, ApJ, 632, 882 ,  Geballe, Oka, 2010, ApJ, 709, L70 ε+ ε- η+ λ α+ θ+ δ+ θ- Goto, Usuda, Nagata, Geballe, McCall, Indriolo, Suto, Henning, Morong, Oka, 2008, ApJ, 688, 306 30 pc

  3. Two sightlines with remarkableH3+spectrum Quintuplet,α, ι 0 – 30 pc East α140 pc West ι85 pc East Geballe and Oka, 2010, ApJ, 709, L70-73

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

  5. Alpha, EMR, warm and diffuse N(3,3) = 1.33 (27)  1015 cm-2 N(1,1) = 1.86 (12)  1015 cm-2 T ~ 300 K Geballe and Oka, ApJ 709, L70-73 (2010) Goto et al., PASJ, 64, L13-17 (2010)

  6. Three stars within 7 pc of angular distance 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 β α+

  7. Three stars within 7 pc of angular distance α  β α+  +  +

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

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

  10. Simple chemistry of H3+: N(H3+) → ·L 0.1!? 7.3 ×10-8 cm3/s 1.6 ×10-4 < 1 L = 2 keN(H3+) (nC/nH)SV RX / f(H2) 3.1 ×1015 cm-2 > 3 L > 2.2 ×105 cm/s  L 10-17 s-1 > 7 kpc 10-16 s-1 > 700 pc 10-15 s-1 > 70pc

  11. T ~ 250 K n < 100 cm-3 L > 2.2  105 cm/s  = 2  10-15 s-1 L > 35pc GCS 3-2 Oka, Geballe, Goto, Usuda, McCall, 2005, ApJ, 632, 882 ,  Geballe, Oka, 2010, ApJ, 709, L70 ε+ ε- η+ λ α+ θ+ θ- δ+ Goto, Usuda, Nagata, Geballe, McCall, Indriolo, Suto, Henning, Morong, Oka, 2008, ApJ, 688, 306 30 pc

  12. Ubiquity of H3+ Sgr A* to 30 pc East Goto, et al. 2008, ApJ, 688, 306 30 pc

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