Difference between revisions of "Triggers:TTau"
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| − | == T Tauri stars == | + | == T Tauri stars and other young variables and transients == |
[[File:figure_ttau_mag.png|400px|right|thumb|T Cha - example of TTau star from the ASAS data]] | [[File:figure_ttau_mag.png|400px|right|thumb|T Cha - example of TTau star from the ASAS data]] | ||
Revision as of 10:21, 26 July 2013
T Tauri stars and other young variables and transients
T Tauri type stars are very young (<math> <10^7 </math> y), low mass (<math> <3 M^{}_\odot </math>) pre-main sequence objects Appenzeller & Mundt 1989.
Characteristics:
- irregular and quasi-periodic variations
- high amplitude (up to 5 mag)
- may have a phase of quiescence (see figure)
- absolute magnitude range: M_V=? to ? mag
- typically do not require a trigger, but watch list of T Tauris would be useful
Below are sample optical spectra of classical T Tauri stars and two FU-ori type eruptive variables.
