Periodic variability of spotted M dwarfs in WTS
View/ Open
Author
Goulding, N. T.
Barnes, J.R.
Pinfield, D.J.
del Burgo, C.
Kovacs, G.
Birkby, J.
Hodgkin, S.
Catalan, S.
Sipocz, B.
Jones, H.R.A.
Jeffers, S.V.
Nefs, S.
Attention
2299/13928
Abstract
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.