Resolved polarization changes across H alpha in the classical T Tauri star RY Tauri

@article{Vink2003ResolvedPC,
  title={Resolved polarization changes across H alpha in the classical T Tauri star RY Tauri},
  author={Jorick S. Vink and J E Drew and Tim J. Harries and Rene Dick Oudmaijer and Yvonne C Unruh},
  journal={Astronomy and Astrophysics},
  year={2003},
  volume={406},
  pages={703-707}
}
We present linear H α  spectropolarimetry of the classical T Tauri star RY Tau. A change in the polarization percentage and position angle across H α  is detected, which suggests that line photons are scattered in a rotating disc. We derive the position angle from the slope of the loop in the $(Q,U)$ diagram and find it to be 146  ±  3 o . This is perpendicular to the position angle of the disc of 48  ±  5 o as deduced from millimeter imaging by Koerner & Sargent ([CITE]). This finding is… 
Probing the circumstellar structures of T Tauri stars and their relationship to those of Herbig stars
We present Hα spectropolarimetry observations of a sample of 10 bright T Tauri stars, supplemented with new Herbig Ae/Be star data. A change in the linear polarization across Hα is detected in most
Ha spectropolarimetry of RYTauri and PX Vulpeculae
Aims. To detect line effects using spectropolarimetry in order to find evidence of rotating disks and their respective symmetry axes in T Tauri stars. Methods. We used the IAGPOL imaging polarimeter
Linear polarization in forbidden lines of the T Tauri star RY Tauri
We performed high-dispersion spectropolarimetry for the T Tauri star RY Tauri and measured linear polarization in seven forbidden lines of [OI]λλ5577, 6300, 6364, [NII]λ6583, [SII]λλ6716, 6731, and
The T Tauri star RY Tauri as a case study of the inner regions of circumstellar dust disks
Aims. We study the inner region (∼1.0 AU up to a few 10 AUs) of the circumstellar disk around the “classical” T Tauri star RY Tau. Our aim is to find a physical description satisfying the available
Linear spectropolarimetry across the optical spectrum of Herbig Ae/Be stars
We present the results of spectropolarimetric observations of 12 Herbig Ae/Be objects. Our data have the largest spectropolarimetric wavelength coverage, 4560 A to 9480~A, published to date. A change
A Statistical Spectropolarimetric Study of Herbig Ae/Be Stars
We present Halpha linear spectropolarimetry of a large sample of Herbig Ae/Be stars. Together with newly obtained data for 17 objects, the sample contains 56 objects, the largest such sample to date.
Linear line spectropolarimetry of Herbig Ae/Be stars
Accretion is the prime mode of star formation, but the exact mode has not yet been identified in the Herbig Ae/Be mass range. We provide evidence that the maximum variation in mass-accretion rate is
UBIQUITOUS Hα-POLARIZED LINE PROFILES: ABSORPTIVE SPECTROPOLARIMETRIC EFFECTS AND TEMPORAL VARIABILITY IN POST-AGB, HERBIG Ae/Be, AND OTHER STELLAR TYPES
We show here that the absorptive Hα polarized line profile previously seen in many Herbig Ae/Be (HAeBe) stars is a nearly ubiquitous feature of other types of embedded or obscured stars. This
FIRST DETECTION OF LINEAR POLARIZATION IN THE LINE PROFILES OF ACTIVE COOL STARS
The application of high-resolution spectropolarimetry has led to major progress in understanding the magnetism and activity of late-type stars. During the last decade, magnetic fields have been
Asphericity and clumpiness in the winds of luminous blue variables
We present the first systematic spectropolarimetric study of Luminous Blue Variables (LBVs) in the Galaxy and the Magellanic Clouds, in order to investigate the geometries of their winds. We find
...
1
2
3
...

References

SHOWING 1-10 OF 21 REFERENCES
Hα spectropolarimetry of B[e] and Herbig Be stars
We present the results of medium resolution (�v� 60 km s 1 ) spectropolarimetric observations across Hof a sample of B(e) and Herbig Be objects. A change in linear polarization across His detected in
The Variability of T Tauri, RY Tauri, and RW Aurigae from 1899 to 1952
We present the historical light curve of T Tau derived from photographic plates in the Harvard College Observatory archives. We find that the optical light of T Tau varied by 2?3 (or more) mag on
Imaging the Small-Scale Circumstellar Gas Around T~Tauri Stars
We have detected circumstellar molecular gas around a small sample of T Tauri stars through aperture synthesis imaging of CO(2-1) emission at ~2-3'' resolution. RY Tauri, DL Tauri, DO Tauri, and AS
Measuring the Magnetic Field on the Classical T Tauri Star BP Tauri
We examine several theories that describe how stellar magnetic fields on classical T Tauri stars (CTTSs) interact with their surrounding accretion disks. We demonstrate that these theories require
Linear polarization observations of T Tauri stars. II - A sample of objects fainter than 13th magnitude
A northern extension to about 15th mag of previous linear polarization surveys of T Tauri stars and other young stellar objects is presented. These surveys were complete to the 13th mag. The sample
Probing the circumstellar structure of Herbig Ae/Be stars
We present Hspectropolarimetry observations of a sample of 23 Herbig Ae/Be stars. A change in the linear polarisation across His detected in a large fraction of the objects, which indicates that the
MAGNETIC ACCRETION AND PHOTOPOLARIMETRIC VARIABILITY IN CLASSICAL T TAURI STARS
We employ a Monte Carlo radiation transfer code to investigate the multiwavelength photopolarimetric variability arising from a spotted T Tauri star surrounded by a dusty circumstellar disk. Our aim
The evolved B[e] star HD 87643: observations and a radiation‐driven disc wind model for B[e] stars
New high resolution spectroscopic and medium resolution spectropolarimetric data, complemented with optical broad and narrow band imaging, of the B[e] star HD 87643 are presented. The spectrum of HD
Accretion Disks around T Tauri Stars
The extent to which the continuum spectral energy distributions of T Tauri stars from 0.2 to 10 microns can be explained by a simple model consisting of an active PMS star and active accretion disk
Catalogue of UBVRI photometry of T Tauri stars and analysis of the causes of their variability
A computer-based catalogue of UBVRI photoelectric photometry of T Tauri stars and their earlier type analogs has been compiled. It presently includes over 10 000 entries on 80 stars and will be
...
1
2
3
...