The Magnetic Topology of the Weak-Lined T Tauri Star V410 - A Simultaneous Temperature and Magnetic Field Inversion

• DOI: 10.48550/arxiv.1211.2720
• Publication Date: 2012-01-01
• Authors: T. A. Carroll; K. G. Strassméier; J. B. Rice; A. Kuenstler
• Keywords: Astrophysics - Solar and Stellar Astrophysics; 0103 physical sciences; FOS: Physical sciences; 01 natural sciences; Solar and Stellar Astrophysics (astro-ph.SR)

We present a detailed temperature and magnetic investigation of the T Tauri star V410 Tau by means simultaneous Doppler- Zeeman-Doppler Imaging. Moreover we introduce new line profile reconstruction method based on singular value decomposition (SVD) to extract weak polarized profiles. One key features is that SVD profiles are amenable radiative transfer modeling within our Imaging code iMap. The also utilizes iterative regularization scheme which independent any additional surface constraints. To provide more stability vital part inversion strategy both Stokes I V simultaneously reconstruct field distribution Tau. A image-shear analysis implemented allow search for image distortions induced differential rotation star. structure obtain shows good spatial correlation with dominated strong cool polar spot. maps exhibit large-scale organization polarities around cap in form twisted bipolar structure. reaches almost 2 kG region but smaller fields down lower latitudes. pronounced non-axisymmetric non-detection supports idea an underlying $\alpha^2$-type dynamo, predicted weak-lined stars.