| Full text | |
| Author(s): |
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]
Total Authors: 7
|
| Affiliation: | [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
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | ASTROPHYSICAL JOURNAL; v. 890, n. 1 FEB 10 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
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) | |
| FAPESP's process: | 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center |
| Grantee: | Elisabete Maria de Gouveia Dal Pino |
| Support Opportunities: | Multi-user Equipment Program |