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VSX Variability Types
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| ROT |
| T Tauri stars showing periodic variability due to spots. For those members of this class where special
features are well known, the subtype classifications of CTTS/ROT
or WTTS/ROT may be applied.
Where not precisely known, the subtype of TTS/ROT is used.
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| WTTS |
Weak-lined T Tauri stars. A T Tauri star that lacks strong emission lines in its optical spectrum
(EW(Hα) < 10Å), and lacks both strong stellar winds and a circumstellar accretion disk. Also known
as naked T Tauri star.
GCVS types INT and IT.
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