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| Paper: |
Probing the Density Structure of 48 Librae's Circumstellar Disk |
| Volume: |
506, Bright Emissaries: Be Stars as Messengers of Star-Disk Physics |
| Page: |
287 |
| Authors: |
Silaj, J.; Jones, C.E.; Carciofi, A.C.; Escolano, C.; Tycner, C. |
| Abstract: |
48 Librae is a well-known Be shell star that exhibits spectacular
cyclic V/R asymmetries in its Balmer emission lines. In this work,
we use the HDUST code to investigate the disk density structure
required to produce this signature. By modelling one representative
Hα profile, we obtain the two initial densities required to
match each peak, and from this we infer the average initial disk
density. Furthermore, we investigate the parameters of the central
star by modelling the SED, and we constrain the inclination angle of
the system with polarization measurements. We find 48 Lib is best
represented by a B3V central star surrounded by a very dense disk with
an average initial density of 1.1×10–10 g cm–3, and
that the system is oriented at 85°. |
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