The Large-scale Behavior in the Disk of delta Scorpii from 2000 to 2018

Autor(es)

Suffak, M. W. ^[1] ; Jones, C. E. ^[1] ; Tycner, C. ^[2] ; Henry, G. W. ^[3] ; Carciofi, A. C. ^[4] ; Mota, B. C. ^[4] ; Rubio, A. C. ^[4]

Afiliação do(s) autor(es)

^[1] Western Univ, Dept Phys & Astron, London, ON N6A 3K7 - Canada

^[2] Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 - USA

^[3] Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37209 - USA

^[4] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ASTROPHYSICAL JOURNAL; v. 890, n. 1 FEB 10 2020.
• Citações Web of Science: 0

Resumo

We model the circumstellar disk of delta Sco using the three-dimensional Monte Carlo radiative transfer code HDUST in order to quantify the large-scale changes in the disk through the years 2000-2018, and to see if these changes can be attributed to the secondary star affecting the disk throughout its orbit. We determine our best-fitting models through matching simulated observations to actual H alpha spectroscopy and V-band photometric observations. Our modeling results confirm previous findings that the disk of delta Sco was forming early in the century. We also find a period of disk dissipation when the companion is at apastron, as well as a significant growth of the disk between 2009 and 2011, prior to the periastron of 2011. Due to the steady-state nature of the disk after 2011, it is difficult to say whether the variations seen are due to the effect of the close passage of the binary companion. (AU)

• Processo FAPESP: 09/54006-4 - Um cluster de computadores para o Departamento de Astronomia do IAG-USP e para o Núcleo de Astrofísica da UNICSUL
• Beneficiário: Elisabete Maria de Gouveia Dal Pino
• Linha de fomento: Auxílio à Pesquisa - Programa Equipamentos Multiusuários