T Tauri and Chromospherically Active Stars in the SDSS II: Variability

Details T Tauri and Chromospherically Active Stars in the SDSS II: Variability T Tauri and Chromospherically Active Stars in the SDSS II: Variability

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.1605m&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #16.05; Bulletin of the American Astronomical Society, Vol. 34, p.1125

Astronomy and Astrophysics

Astronomy

Scientific paper

The detection of pre-main sequence and magnetically active low mass stars in the field via ultraviolet excess is complicated by the presence of white dwarf - M dwarf pairs (WD+M) in which the white dwarf signature mimics the excess continuum due to accretion or chromospheric activity. However, the use of synoptic survey data permits a clean separation between the WD+M and candidate T Tauris and dMe on the grounds of near-UV and blue variability. We utilize multi-epoch photometry obtained by the Sloan Digital Sky Survey to identify possible PMS and magnetically active M stars using changes in the SDSS u* and g* magnitudes. The spatial location of the resulting candidates are studied in relation to that of high-latitude molecular clouds.

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