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"How to be a connoiseur of stellar light curves" or Criteria for reliable frequency extraction of pulsating stars observations

Pascual-Granado, Javier; García Hernández, Antonio; Álvarez Martínez, Sergio

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{
"description": "<p>It is clear that for the identification of pulsation modes a necessary first step is the unambiguous detection and extraction of frequencies from observations. It is no less clear that this task is arduous and full of obstacles. To name just a few: irregular sampling introduce correlation between frequency bins in the periodogram; noise level cannot be estimated properly when the statistical properties deviate from a uncorrelated stochastic process with Gaussian distribution; the false alarm test, which is based on a proper estimation of the noise level, also suffer from biases due to assumptions like an exponentially distributed noise; different fitting methods produce different results, etc. Here I will discuss some of these issues and introduce an ambitious project aimed to formalize a set of consistent criteria for a reliable frequency extraction in pulsating stars observations. This will produce a living recipe with the purpose of serving as a reference for the present and future data analysts of the ultra-precise observations gathered by asteroseismic space missions. That is, the necessary criteria to be a connoisseur of stellar light curves and identify pulsation modes with seismic models.</p>",
"creator": [
{
"affiliation": "Instituto de Astrof\u00edsica de Andaluc\u00eda - CSIC",
"@id": "https://orcid.org/0000-0003-0139-6951",
"@type": "Person",
},
{
"@type": "Person",
"name": "Garc\u00eda Hern\u00e1ndez, Antonio"
},
{
"affiliation": "Valencia International University",
"@type": "Person",
"name": "\u00c1lvarez Mart\u00ednez, Sergio"
}
],
"url": "https://zenodo.org/record/5562498",
"datePublished": "2021-10-11",
"keywords": [
"data analysis",
"stars: oscillations",
"methods: statistical"
],
"@context": "https://schema.org/",
"identifier": "https://doi.org/10.5281/zenodo.5562498",
"@id": "https://doi.org/10.5281/zenodo.5562498",
"@type": "PresentationDigitalDocument",
"name": "\"How to be a connoiseur of stellar light curves\" or Criteria for reliable frequency extraction of pulsating stars observations"
}
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