Automatic Detection of Accretion Bursts in Young Stellar Objects: a New Algorithm for Long--Term Sky Surveys

F. Strafella; G. Altavilla; T. Giannini; A. Giunta; D. Lorenzetti; A. Nucita; A. Franco

doi:10.1016/j.newast.2022.101813

Automatic Detection of Accretion Bursts in Young Stellar Objects: a New Algorithm for Long--Term Sky Surveys

Solar and Stellar Astrophysics 2022-04-06 v1 Instrumentation and Methods for Astrophysics

Authors: F. Strafella , G. Altavilla , T. Giannini , A. Giunta , D. Lorenzetti , A. Nucita , A. Franco

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Abstract

Young stellar objects in their pre-main sequence phase are characterized by irregular changes in brightness, generally attributed to an increase of the mass accretion rate due to various kind of instabilities occurring in the circumstellar disk. In the era of large surveys aimed to monitor the sky, we present a pipeline to detect irregular bursts, in particular EXors-like ( EX Lupi type eruptive variables), in the light curves. The procedure follows a heuristic approach and is tested against the light curves already collected for a few objects presently recognized as bona fide or candidate EXors.

Keywords

neutron star accretion stellar outbursts and variable stars exoplanet transit detection

Cite

@article{arxiv.2203.11621,
  title  = {Automatic Detection of Accretion Bursts in Young Stellar Objects: a New Algorithm for Long--Term Sky Surveys},
  author = {F. Strafella and G. Altavilla and T. Giannini and A. Giunta and D. Lorenzetti and A. Nucita and A. Franco},
  journal= {arXiv preprint arXiv:2203.11621},
  year   = {2022}
}

Comments

19 pages, 5 figures. In press in New Astronomy

Automatic Detection of Accretion Bursts in Young Stellar Objects: a New Algorithm for Long--Term Sky Surveys

Abstract

Keywords

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