Difference between revisions of "Triggers:TTau"

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(T Tauri stars)
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* absolute magnitude range: M_V=? to ? mag
 
* absolute magnitude range: M_V=? to ? mag
 
* typically do not require a trigger, but watch list of T Tauris would be useful
 
* typically do not require a trigger, but watch list of T Tauris would be useful
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 +
Below are sample optical spectra of classical T Tauri stars and two FU-ori type eruptive variables.
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[[File:FUori-spectra.jpeg|400px|left|thumb|FRODOspec data from the Liverpool Telescope ]]
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[[File:CTTS-spectra.jpeg|400px|right|thumb|FRODOspec data of DG Tau (red), CW Tau (blue) and HL Tau (green) ]]

Revision as of 10:19, 26 July 2013

T Tauri stars

T Cha - example of TTau star from the ASAS data

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.

FRODOspec data from the Liverpool Telescope
FRODOspec data of DG Tau (red), CW Tau (blue) and HL Tau (green)