Zoekopdracht:
journal id: "astronomyxandxastrophysics"
| Auteurs | B. Acke, M.E. van den Ancker, C.P. Dullemond, R.J.H.M. van Boekel, L.B.F.M. Waters | | Titel | Correlation between grain growth and disk geometry in Herbig Ae/Be systems |
| Tijdschrift | Astronomy and Astrophysics |
| Jaargang | 422 |
| Jaar | 2004 |
| Pagina's | 621-626 |
| ISSN | 00046361 |
| Faculteit | Faculteit der Natuurwetenschappen, Wiskunde en Informatica |
| Instituut/afd. | FNWI: Astronomical Institute Anton Pannekoek (IAP) |
| Trefwoorden | stars: circumstellar matter; stars: circumstellar matter; protoplanetary disks; stars: pre-main-sequence |
| Samenvatting | We have calculated the (sub-)mm spectral indices of 26 Herbig Ae/Be stars, for which we can determine the infrared spectral energy distribution (SED). We find a clear correlation between the strength of the ratio of the near- to mid-infrared excess of these sources, and the slope of the (sub-)mm energy distribution. Based on earlier multi-dimensional modeling of disks around Herbig Ae stars, we interpret this as a correlation between the geometry of the disk (flared or self-shadowed) and the size of the grains: self-shadowed disks have, on average, larger grains than their flared counterparts. These data suggest that the geometry of a young stellar disk evolves from flared to self-shadowed. |
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