The Enigmatic Radio Source T Tauri S

K J Johnston, A L Fey, R A Gaume, C A Hummel, S Garrington, T Muxlow, P Thomasson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have observed the T Tau multiple star system using the Multielement Radio-linked Interferometer Network at a frequency of 5 GHz. The compact centimeter wavelength radio emission from T Tau S has been found to consist of at least two components separated by approximately 70 mas in right ascension at Julian epoch 2001.89. Using this data and that previously published, we show that the most intense, compact radio emission may not all be coincident in position but associated with the M-type star in the binary system T Tau S. This emission may be due to magnetic reconnection processes in the YSO system. The estimated masses of the stars using the Hipparcos parallax are 4.0 Msolar for Sa and 1.0 Msolar for Sb. However, using the currently accepted parallax for the Taurus-Auriga complex of 140 pc, the value of these masses is reduced by a factor of 2. This is consistent with T Tau Sa being a pre-main-sequence star.
    Original languageEnglish
    Pages (from-to)L65-L68
    JournalThe Astrophysical Journal Letters
    Volume604
    Publication statusPublished - 2004

    Keywords

    • Stars: Binaries: General
    • Radio Continuum: Stars
    • Stars: Pre-Main-Sequence

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