Study of the inner disk of the Herbig star MWC480

TL;DR

This study investigates the inner disk structure of the Herbig star MWC480 using infrared interferometry and semi-analytical models to fit observational data, suggesting a possible transitional dusty disk.

Contribution

It introduces a combined modeling approach fitting SED and interferometric data with a two-component disk model for MWC480, indicating a transitional disk structure.

Findings

Successful fitting of SED and interferometric visibilities with a two-component disk model

Evidence suggesting MWC480 may have a transitional dusty disk

Need for additional MIDI observations to confirm disk structure

Abstract

The inner structure and properties (temperature, mass) of the circumstellar disk of Herbig star MWC480 are studied by stellar interferometry method used in the infrared and are interpreted using semi-analytical models. From these models, the SED (Spectral Energy Distribution) was fitted and multi- wavelength intensity map of the source were calculated. The intensity map provides the input for modeling the Keck Interferometer (KI) data in the near-infrared (near-IR) and the data of the Very Large Telescope Interferometer (VLTI) with the mid-infrared instrument MIDI. We conclude that with our limited set of data, we can fit the SED, the Keck visibilities and the MIDI visibilities using a two-components disk model. Furthermore, we suspect that MWC480 has a transitional dusty disk. However, we need more MIDI observations with different baseline orientations to confirm our modeling.