The dipper population of Taurus seen with K2

نویسندگان

چکیده

Context. Dippers are typically low-mass, pre-main-sequence stars that display dips in their light curves. These have been attributed to dusty warps form the inner part of disk. Aims. Our goal is derive characteristics dipper Taurus assess physical mechanisms induce Methods. We used curves fourth and thirteenth campaigns K2 select a sample among 179 members possible star-forming region based on light-curve morphology. studied periodicities by combining periodograms with wavelet analysis derived stellar parameters from photometry. also morphology photometric dips. Results. find occurrence ~30% disk-bearing observed were identified visually us. This represents lower limit true occurrence, one hand because they ephemeral, other there detection limits. About half dippers aperiodic, most these dominated another type variability. The chosen late spectral (K/M), low mass (mostly <1 M ⊙ ), moderate accretion rates has periods few days. transient over rotation cycles changing period. structure can be complex varies strongly timescales down rotation. corotation radii located at radii, temperatures allow dust survival. Many systems seen high inclination. angular extension producing correlated Conclusions. Magnetospheric accretion, which causes an column its base occult star, explain Although compatible model, many inclination angles do not exclude than occultation disk warp account for

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ژورنال

عنوان ژورنال: Astronomy and Astrophysics

سال: 2021

ISSN: ['0004-6361', '1432-0746']

DOI: https://doi.org/10.1051/0004-6361/202140646