TY - JOUR
T1 - Statistical analysis of interferometric measurements of axis ratios for classical Be stars
AU - Cyr, R. P.
AU - Jones, C. E.
AU - Tycner, C.
N1 - Publisher Copyright:
© 2015. The American Astronomical Society. All rights reserved.
PY - 2015/1/20
Y1 - 2015/1/20
N2 - This work presents a novel method to estimate the effective opening angle of CBe star disks from projected axis ratio measurements, obtained by interferometry using a statistical approach. A Monte Carlo scheme was used to generate a large set of theoretical axis ratios from disk models using different distributions of disk densities and opening angles. These theoretical samples were then compared to observational samples, using a two-sample Kolmogorov-Smirnov test, to determine which theoretical distribution best reproduces the observations. The results suggest that the observed ratio distributions in the K, H, and N band can best be explained by the presence of thin disks, with opening half-angles of the order of 0°.15-4°.0. Results for measurements over the Hα line point toward slightly thicker disks, 3°.7-14°, which is consistent with a flaring disk predicted by the viscous disk model.
AB - This work presents a novel method to estimate the effective opening angle of CBe star disks from projected axis ratio measurements, obtained by interferometry using a statistical approach. A Monte Carlo scheme was used to generate a large set of theoretical axis ratios from disk models using different distributions of disk densities and opening angles. These theoretical samples were then compared to observational samples, using a two-sample Kolmogorov-Smirnov test, to determine which theoretical distribution best reproduces the observations. The results suggest that the observed ratio distributions in the K, H, and N band can best be explained by the presence of thin disks, with opening half-angles of the order of 0°.15-4°.0. Results for measurements over the Hα line point toward slightly thicker disks, 3°.7-14°, which is consistent with a flaring disk predicted by the viscous disk model.
KW - Circumstellar matter
KW - Methods: statistical
KW - Stars: emission-line, Be
KW - Techniques: interferometric
UR - http://www.scopus.com/inward/record.url?scp=84921467045&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/799/1/33
DO - 10.1088/0004-637X/799/1/33
M3 - Article
AN - SCOPUS:84921467045
VL - 799
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 33
ER -