Spectrally Dispersed K-Band Interferometric Observations of Herbig Ae/Be Sources: Inner Disk Temperature Profiles

Abstract

We use spectrally dispersed near-IR interferometry data to constrain the temperature profiles of sub-AU-sized regions of 11 Herbig Ae/Be sources. We find that a single-temperature ring does not reproduce the data well. Rather, models incorporating radial temperature gradients are preferred. These gradients may arise in a dusty disk, or may reflect separate gas and dust components with different temperatures and spatial distributions. Comparison of our models with broadband spectral energy distributions suggests the latter explanation. The data support the view that the near-IR emission of Herbig Ae/Be sources arises from hot circumstellar dust and gas in sub-AU-sized disk regions. Intriguingly, our derived temperature gradients appear systematically steeper for disks around higher mass stars. It is not clear, however, whether this reflects trends in relative dust/gas contributions or gradients within individual components.

arXiv comment29 pages, including 7 figures. Accepted by ApJ

References in corpus (13)

• Spectral Energy Distributions of T Tauri Stars With Passive Circumstellar Disks
• Passive irradiated circumstellar disks with an inner hole
• The Palomar Testbed Interferometer
• The Shape of the Inner Rim in Proto-Planetary Disks
• On the Location of the Snow Line in a Protoplanetary Disk
• Spatially Resolved Circumstellar Structure of Herbig Ae/Be Stars in the Near-Infrared
• Resolved Inner Disks around Herbig Ae/Be Stars
• The near-infrared size-luminosity relations for Herbig Ae/Be disks
• Fringe Visibility Estimators for the Palomar Testbed Interferometer
• VLA Imaging of the Disk Surrounding the Nearby Young Star TW Hya
• Hot H2O Emission and Evidence for Turbulence in the Disk of a Young Star
• Observations of T Tauri Disks at Sub-AU Radii: Implications for Magnetospheric Accretion and Planet Formation
• Near-Infrared Interferometric Measurements of Herbig Ae/Be Stars

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