Multi-wavelength observing of a forming solar-like star

TL;DR

This study models the magnetic field and corona of the young star V2129 Oph, predicting its X-ray emissions and accretion shock densities, and plans a comprehensive multi-wavelength observational campaign to validate these models.

Contribution

The paper presents the first detailed 3D magnetic field extrapolation for V2129 Oph and proposes a multi-wavelength observational campaign to test the model's predictions.

Findings

Magnetic field extrapolation predicts X-ray emission measures.

Model estimates accretion shock densities.

Campaign aims to validate magnetic topology models.

Abstract

V2129 Oph is a 1.35 solar mass classical T Tauri star, known to possess a strong and complex magnetic field. By extrapolating from an observationally derived magnetic surface map, obtained through Zeeman-Doppler imaging, models of V2129 Oph's corona have been constructed, and used to make predictions regarding the global X-ray emission measure, the amount of modulation of X-ray emission, and the density of accretion shocks. In late June 2009 we will under take an ambitious multi-wavelength, multi-observing site, and near contemporaneous campaign, combining spectroscopic optical, nIR, UV, X-ray, spectropolarimetric and photometric monitoring. This will allow the validity of the 3D field topologies derived via field extrapolation to be determined.