GRAVITY Interferometric analysis and modelling of disks around Herbig Be stars
Abstract
In the framework of the formation and evolution of planetary disks, we tackle the link between young Herbig Ae and Herbig Be stars and their different theories on formation mechanisms. Several lines of evidence link HAe stars with Magnetospheric Accretion (MA), while HBe stars are linked with direct disk-to-star accretion through a Boundary Layer (BL) theories. In turn, the different accretion mechanisms may lead to observable differences in the innermost parts of their protoplanetary disks. Our analysis of K- band observations with the VLTI/GRAVITY interferometer at the Paranal Observatory provides spatially and spectrally resolved data of the inner disks of a sample of HBe stars that are suspected to be non-magnetospheric. With these data, we intend to characterize the inner gas and dust region in terms of sizes, densities, temperatures and velocities of our sample. We applied specifically designed model-fitting-tools for interferometric observations to our sample of HBes.
- Publication:
-
XIV.0 Scientific Meeting (virtual) of the Spanish Astronomical Society
- Pub Date:
- July 2020
- Bibcode:
- 2020sea..confE.155M