T Tauri Research Articles

H2 emission in the EUV spectrum of T Tauri and Burnham's nebula

Emission in the Lyman bands of H2 has been detected in an extreme ultraviolet (EUV) spectrum of T Tauri and its adjacent nebula, obtained with the international UV explorer (IUE) satellite. We report here that the emission is in a progression which can be excited through fluorescence with the red wing of the H Lyα line, as found also in the solar atmosphere1. The observed EUV fluxes, absence of other progressions and the flux in the previously observed2 1–0 S(1) IR line support a model where collisional rather than radiative excitation leads to an excitation temperature of ≳ 2,000 K.

Variability in the light and H? emission of T Tau

Variability in the light and H? emission of T Tau

ULTRAVIOLET CONTINUOUS EMISSION IN T TAURI STARS

ULTRAVIOLET CONTINUOUS EMISSION IN T TAURI STARS

The Spectrum of the Nebulosity Surrounding T Tauri.

The Spectrum of the Nebulosity Surrounding T Tauri.

HIGH-DISPERSION SPECTROGRAM OF T TAURI

HIGH-DISPERSION SPECTROGRAM OF T TAURI

THE SPECTRUM OF T TAURI

THE SPECTRUM OF T TAURI

The Spectrum of T Tauri

The Spectrum of T Tauri