Influence of Large-Scale Perturbations in Circumstellar Disks on the Linear Polarization Parameters of UX Ori Stars

被引：6

作者：

Shulman, S. G. ^{[1
]}

Grinin, V. P. ^{[1
,2
]}

机构：

[1] St Petersburg State Univ, Univ Skii Pr 28, St Petersburg 198504, Russia

[2] Russian Acad Sci, Pulkovo Astron Observ, Pulkovskoe Sh 65, St Petersburg 196140, Russia

来源：

ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 2019年 / 45卷 / 10期

关键词：

variable stars; T Tauri; Herbig Ae; Be; circumstellar environment; radiative transfer; polarization; CENTRIFUGALLY DRIVEN WINDS; HERBIG AE/BE STARS; MIDINFRARED VARIABILITY; POLARIMETRIC ACTIVITY; PROTOSTELLAR DISKS; STELLAR OBJECTS; DEEP MINIMA; LIGHT; DUST; SCATTERING;

D O I：

10.1134/S1063773719100062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The influence of large-scale perturbations in a circumstellar disk on the linear polarization of UX Ori stars is considered. We show that the position angle of the intrinsic linear polarization of a star surrounded by a geometrically thin flared disk cannot change significantly after the passage through the photometric minimum due to perturbations in the disk. In contrast, perturbations in a disk puffed up in the dust sublimation zone can give deflections of the plane of linear polarization of the system's radiation up to 60 degrees. This model allows the unusual changes in linear polarization observed in UX Ori and WW Vul after prolonged photometric minima to be explained.

引用

页码：664 / 676

页数：13

共 8 条

[1] Influence of Large-Scale Perturbations in Circumstellar Disks on the Linear Polarization Parameters of UX Ori Stars
S. G. Shulman
V. P. Grinin
Astronomy Letters, 2019, 45 : 664 - 676
[2] UX Ori stars eclipses by large-scale disc perturbations
Shulman, S. G.
Grinin, V. P.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 512 (02) : 3098 - 3112
[3] Modeling of large-scale disk perturbation eclipses of UX Ori stars with the puffed-up inner disks
Shulman, Sergey
Grinin, Vladimir
OPEN ASTRONOMY, 2022, 31 (01) : 67 - 79
[4] Linear Polarization and the Dynamics of Circumstellar Disks of Classical Be Stars
Halonen, Robbie J.
Jones, Carol E.
NEW WINDOWS ON MASSIVE STARS: ASTEROSEISMOLOGY, INTERFEROMETRY AND SPECTROPOLARIMETRY, 2014, 307 : 377 - 378
[5] Tracing large-scale structures in circumstellar disks with ALMA
Ruge, J. P.
Wolf, S.
Uribe, A. L.
Klahr, H. H.
ASTRONOMY & ASTROPHYSICS, 2013, 549
[6] Large-scale perturbations in the circumstellar envelopes of Be/X-ray binaries
Negueruela, I
Reig, P
Coe, MJ
Fabregat, J
ASTRONOMY & ASTROPHYSICS, 1998, 336 (01) : 251 - 262
[7] Tracing the large-scale magnetic field morphology in protoplanetary disks using molecular line polarization
Lankhaar, Boy
Vlemmings, Wouter
Bjerkeli, Per
ASTRONOMY & ASTROPHYSICS, 2022, 657
[8] Large-scale magnetic field in the accretion discs of young stars: the influence of magnetic diffusion, buoyancy and Hall effect
Khaibrakhmanov, S. A.
Dudorov, A. E.
Parfenov, S. Yu.
Sobolev, A. M.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 464 (01) : 586 - 598

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