bally et al. 2010, apj, 721, 137
DESCRIPTION
Molinari et al, 2011, ApJ, 735, L33. Bally et al. 2010, ApJ, 721, 137. Double ring or single ring. EMR. Sawada et al. 2004. Scoville, 1972. Rodr íguez-Fernandez et al. 2006. J. Kormendy & R. C. Kennicutt, 2004, ARA&A. Molinari et al, 2011, ApJ, 735, L33. Molecular face-on views of the GC. - PowerPoint PPT PresentationTRANSCRIPT
Bally et al. 2010, ApJ, 721, 137Molinari et al, 2011, ApJ, 735, L33
Double ring or single ring
Molinari et al, 2011, ApJ, 735, L33
Sawada et al. 2004
J. Kormendy & R. C. Kennicutt, 2004, ARA&A
Scoville, 1972
EMR
Rodríguez-Fernandez et al. 2006
N. Z. Scoville, 1972, ApJ, 175, L127T. Sawada et al. 2001, ApJS, 136, 189
T. Sawada et al. 2004, MNRAS, 349, 1167
Molecular face-on views of the GC
Rodríguez-Fernandez et al. 2006 Bally et al. 2010, ApJ, 721, 137
Molinari et al, 2011, ApJ, 735, L33
Ubiquity of H3+
Sgr A* to 30 pc East
30 pc
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-200 -150 -100 -50 0 50 100
GCS 4
NHS 21
NHS 25
NHS 42
FMM 361
Goto, et al. 2008, ApJ, 688, 306
H3+ and CO
α 140 pc Westι 85 pc East
Geballe and Oka, 2010, ApJ, 709, L70-73
Two sightlines with remarkable H3+ spectrum
α 140 pc West
ι 68 pc East
Geballe and Oka, 2010, ApJ, 709, L70-73
0 – 30 pc EastQuintuplet, α, ι
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-200 -150 -100 -50 0 50 100
GCS 4
NHS 21
NHS 25
NHS 42
FMM 361
H3+ as thermometer and densitometer
Metastable
27.2 days
Ortho I = 3/2
Para I = 1/2J
K
(3,3)
(2,2)
(1,1)
Pan and Oka, 1987, ApJ, 305, 518
(1,0)361 K
CO R(1)
(2,2) unstable
(3,3) metastable
(1,1) ground
T ~ 250 K
n ≤ 100 cm-3
Oka, Geballe, Goto, Usuda, McCall, 2005, ApJ, 632, 882
T n
Spontaneous breakdown of symmetry
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-200 -150 -100 -50 0 50 100
GCS 4
NHS 21
NHS 25
NHS 42
FMM 361
Sofue 1995, PASJ, 47, 551
Future 2: 2 Herschel Proposal OA2
Molinari et al, 2011, ApJ, 735, L33