Further studies of 5797 1 Diffuse Interstellar Band
Further studies of λ 5797. 1 Diffuse Interstellar Band Takeshi Oka, Lew M. Hobbs, Daniel E. Welty, Donald G. York Department of Astronomy and Astrophysics, University of Chicago Julie Dahlstrom Department of Physics and Astronomy Carthage College Adolf N. Witt Department of Physics and Astronomy University of Toledo June 25, 2015, International Symposium on Molecular Spectroscopy, University of Illinois at Urbana Champaign
The Diffuse Interstellar Bands (DIBs) Ben Mc. Call Don York Apache point observatory
Two contrasting sightlines, C 2 C 3 rich and poor 380 bands 414 bands HD 204827 Highest N(C 2) and N(C 3) HD 183143 C 2, C 3 not detected
Our previous work on λ 5797. 1 DIB x-axis Stars ~ 300 (SDSS > 5000) Herschel 36 y-axis DIBs ~ 500 λ 5797 DIB Her 38 From Don York October 8, 2011 AAT R ~ 600, 000 rotational excitation high Tr ~ 90 K B´ ‒ B < 0 linear molecule polar molecule n ≤ 7 Polar molecule Parallel band of prolate top Tr = 2. 73 K 5≤n≤ 7
Vibronic satellites of λ 5797. 1 DIB HD 204827 5797. 1 Å 17250. 12 cm-1 120 DIBs 5494. 2 5545. 1 HD 183143 73 DIBs 5797. 2
Correlations between DIBs × ×
Vibronic bands 1147 cm-1 602 cm-1 0. 943 (77) 0. 941 (77) 5494. 1 Å 18201. 3 cm-1 0. 903 (109) 5545. 1 Å 18034. 1 cm-1 5797. 1 Å 17250. 12 cm-1 951. 2 cm-1 784. 0 cm-1
Correlations: 5797. 1 vs 5494 and 5545 r = 0. 943 77 stars r = 0. 941 77 stars HD 21389 HD 229059 Hobbs et al. (2009)
Line shape ESO La. Silla 3. 6 -m telescope R = 115, 000
II. 5797 DIB and RR 5800 by the same molecule
Emission and Absorption Herschel 36 Tr ~ 90 K Red Rectangle 3000 K
III Anomalous microwave emission Draine, Ann. Rev. Astron. Astrophys. 41, 241 (2003)
Ap. J 460, 1 (1996) A&A 565, A 103 (2014)
I am scared and mystified High column density 1013 cm-2 PAH C 60 Snow & Mc. Call, ARAA, 44, 367 (2004)
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