Periodic variability of spotted M dwarfs in WTS
oleh: Sipőcz B., Catalán S., Hodgkin S., Birkby J., del Burgo C., Kovács G., Pinfield D.J., Barnes J.R., Goulding N.T., Jones H.R.A., Jeffers S.V., Nefs S.
| Format: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2013-04-01 |
Deskripsi
We present an analysis of the photometric variability of M dwarfs in the WFCAM Transit Survey, selected from spectral types inferred by their WTS and SDSS colours, with periods detected using a Lomb-Scargle Periodogram Analisys. We estimate population membership of these objects from their tangential velocities and photometric parralaxes. Examples of M dwarfs with variable light curve morphologuies are found. We discuss possible causes for this and make use of models of spotted stars in our interpretation of the results.