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Detection of Molecular Hydrogen Emission Associated with LkHalpha 264

Yoichi Itoh·Koji Sugitani·Katsuo Ogura·Motohide Tamura
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Abstract

We have detected emission of molecular hydrogen from a classical T Tauri star, LkHalpha 264 in the v=1-0 S(1) line at 2.122 micron. The line velocity is coincident with the rest velocity of the star. The line profile is well reproduced by a model in which the line emanates from material in a Keplerian rotating circumstellar disk. Fluorescence by X-ray ionization and shock excitation due to accretion or a low-velocity wind are considered for the emission mechanism of molecular hydrogen.

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Yoichi Itoh, Koji Sugitani, Katsuo Ogura, Motohide Tamura. 2003-10-11. Detection of Molecular Hydrogen Emission Associated with LkHalpha 264. https://doi.org/10.1093/pasj%2F55.6.l77

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