An alternative to unseen companions to T Tauri stars

Details An alternative to unseen companions to T Tauri stars An alternative to unseen companions to T Tauri stars

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...411l..99b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 411, no. 2, p. L99-L102.

Astronomy and Astrophysics

Astrophysics

34

Companion Stars, Infrared Stars, Star Formation, Stellar Envelopes, T Tauri Stars, Gravitational Effects, Pre-Main Sequence Stars, Stellar Mass

Scientific paper

Emission at infrared to millimeter wavelengths from the prototypical pre-main-sequence star T Tauri is consistent with the existence of a low-mass circumstellar disk around T Tauri. T Tauri's spectrum can be characterized as flat, but with a significant dip at mid-infrared wavelengths. Mid-infrared dips can result from gaps in the cireumstellar disk, and such gaps are thought to imply the existence of unseen companions which produce the gaps through gravitational effects. We show here that mid-infrared dips in T Tauri star spectra may have a more prosaic cause, and may be simply the result of dust grain opacity and the vertical structure of a low-mass circumstellar disk without a gap.

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