New exocomets of ? Pic

نویسندگان

چکیده

Aims. The aim of our work is to analyze the light curves $\beta$ Pic recently observed by TESS in sectors 32, 33, and 34, searching for signatures exocomet transits. Methods. We process from MAST database, applying frequency analysis remove harmonic signals due star's pulsations use a simple 1-D model fit profiles found events. Results. recover events previously other authors 5 6 find five new distinct aperiodic dipping with asymmetric shapes resembling expected passage comet-like body across star disk. These dips are rather shallow, flux drop at level 0.03\% duration less than 1 day. No periodic transits were investigated. Conclusions. depth identified similar discovered sector observations as well those KIC 354116 1108472 Kepler database. It indicates that shallow not likely an exceptional phenomenon, least system.

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ژورنال

عنوان ژورنال: Astronomy and Astrophysics

سال: 2022

ISSN: ['0004-6361', '1432-0746']

DOI: https://doi.org/10.1051/0004-6361/202142111