Modelling planet-forming circumstellar discs - Herschel

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z/r 0.4 0.3 0.2 0.1 AV=10 AV=1 0 2 4 6 8 10 log n H2O [cm -3 ] 15.738µm AV=1 63.324µm AV=10 <strong>Herschel</strong> Water Lines II 89.988µm 0.0 0.1 1.0 10.0 r [AU] 100.0 AV=1 269.27µm Rivière-Marichalar et al. (2012, A&A 538, L3), also poster → poster by Kamp et al., this conference Too much water in outer regions? • settling of large icy grains below small ice-free grains ? (Hogerheijde, previous talk) • gas/dust ratio ? • surface chemistry ? • UV photo-desorption yield ? • metal abundances (Na, Mg, Si, S, Fe) ? •First •Prev •Next •Last •Go Back •Full Screen •Close •Quit
log ν F ν [erg/cm 2 /s] z [AU] -10 -12 -14 -16 TW Hya: analysis of <strong>Herschel</strong> data dist = 56.0 pc star + UV incl = 7 o Spitzer IRS -18 0.1 1.0 10.0 100.0 λ [µm] 1000.0 10000.0 100 10 1 0.1 0.01 2 4 6 8 10 log n [cm -3 ] 1 10 100 r [AU] M⋆ =0.6 M⊙, age =10 Myr, Teff =4000 K, L⋆ =0.23 L⊙, inner disk: 0.25−4 AU, outer disk: 4−200 AU, dust: 0.03 µm−10 cm(!), Mdust ≈0.0002 M⊙, Mgas =(0.005−0.05)M⊙, (0.003 b ) gas/dust=3−26 observed model [OI] 63 µm 36.5 ± 4 ≈ 85 b CO 18 → 17 3.5 ± 1.2 ≈ 0.33 b CO 3 → 2 0.43 ± 0.13 ≈ 0.41 b 13 CO 3 → 2 0.044 ± 0.013 ≈ 0.084 b H2O 538 µm ≈ 0.22 a ≈ 0.32 b H2O 269 µm ≈ 0.29 a ≈ 0.79 b H2O 89.9 µm 5.6 ± 0.9 b ≈ 0.53 b line fluxes in [10 −18 W/m 2 ] Thi, Mathews, Ménard, Woitke et al. (2010) a : Hogerheijde et al. (2011, Science 334, 338) b : Kamp et al. (2012, A&A in prep. → see poster) •First •Prev •Next •Last •Go Back •Full Screen •Close •Quit
Page 1 and 2: Modelling Planet-forming Circumstel
Page 3 and 4: What means (radiation) thermo-chemi
Page 5 and 6: PROtoplanetary DIsk MOdel main pape
Page 7 and 8: Heating & Cooling � Γk(Tgas, ni,
Page 9 and 10: κ [cm 2 /g(dust)] Disc dust is spe
Page 11 and 12: Radiation thermo-chemical disc mode
Page 13 and 14: Some remarkable results and latest
Page 15 and 16: z / r Dust and Gas Temperature L⋆
Page 17 and 18: Do the models agree? Bruderer et al
Page 19 and 20: Using optical - sub-mm lines to con
Page 21 and 22: Important results from Herschel •
Page 23 and 24: HD 100546: analysis of PACS/DIGIT d
Page 25 and 26: z [AU] 100 10 1 0.1 0.01 HD 169142:
Page 27: Herschel Water Lines I Riviere-Mari
Page 31 and 32: Bad things (major uncertainties)

Modelling planet-forming circumstellar discs - Herschel

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