Magnetic field measurements of T tauri stars in the Orion Nebula Cluster

57Citations
Citations of this article
16Readers
Mendeley users who have this article in their library.

Abstract

We present an analysis of high-resolution (R 50, 000) infrared K-band echelle spectra of 14 T Tauri stars (TTSs) in the Orion Nebula Cluster. We model Zeeman broadening in three magnetically sensitive Ti I lines near 2.2 μm and consistently detect kilogauss-level magnetic fields in the stellar photospheres. The data are consistent in each case with the entire stellar surface being covered with magnetic fields, suggesting that magnetic pressure likely dominates over gas pressure in the photospheres of these stars. These very strong magnetic fields might themselves be responsible for the underproduction of X-ray emission of TTSs relative to what is expected based on main-sequence star calibrations. We combine these results with previous measurements of 14 stars in Taurus and 5 stars in the TW Hydrae association to study the potential variation of magnetic field properties during the first 10 million years of stellar evolution, finding a steady decline in total magnetic flux with age. © 2011. The American Astronomical Society. All rights reserved.

Cite

CITATION STYLE

APA

Yang, H., & Johns-Krull, C. M. (2011). Magnetic field measurements of T tauri stars in the Orion Nebula Cluster. Astrophysical Journal, 729(2). https://doi.org/10.1088/0004-637X/729/2/83

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free