<< back
On the nature of the Orion Belt Population sources

Karolina Kubiak

The Orion Belt population (OBP, Kubiak et al. 2017) is a newly described young, rich, and massive population in the vicinity of the epsilon Ori supergiant. In this contribution, we present an analysis of the spectral energy distributions (SED) of all candidate sources from the OBP. We constructed SEDs for all sources in the selected field using archival data over a broad spectral range. To analyze the nature of the sources, we use SED modeling based on the new models by T. Robitaille (2017). These models can be used to determine specific parameters for a given young star, such as the properties of the central source, the size, and mass of the disk, and more generally any parameter which may affect the SED. We also looked for signs of variability at both optical and infrared wavelengths among the members of the OBP. Our findings show that there are a significant amount of passive circumstellar disks within the OBP and that more than 10% of these sources show variability at a significant level in the optical and infrared.

2019 October 24, 15:00

Observatório Astronómico de Lisboa (Seminar room)
Tapada da Ajuda, 1349-018 Lisboa

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia