Presentation Open Access

# "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

### DataCite XML Export

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<identifier identifierType="DOI">10.5281/zenodo.5562498</identifier>
<creators>
<creator>
<givenName>Javier</givenName>
<nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-0139-6951</nameIdentifier>
<affiliation>Instituto de Astrofísica de Andalucía - CSIC</affiliation>
</creator>
<creator>
<creatorName>García Hernández, Antonio</creatorName>
<givenName>Antonio</givenName>
<familyName>García Hernández</familyName>
</creator>
<creator>
<creatorName>Álvarez Martínez, Sergio</creatorName>
<givenName>Sergio</givenName>
<familyName>Álvarez Martínez</familyName>
<affiliation>Valencia International University</affiliation>
</creator>
</creators>
<titles>
<title>"How to be a connoiseur of stellar light curves" or Criteria for reliable frequency extraction of pulsating stars observations</title>
</titles>
<publisher>Zenodo</publisher>
<publicationYear>2021</publicationYear>
<subjects>
<subject>data analysis</subject>
<subject>stars: oscillations</subject>
<subject>methods: statistical</subject>
</subjects>
<dates>
<date dateType="Issued">2021-10-11</date>
</dates>
<resourceType resourceTypeGeneral="Text">Presentation</resourceType>
<alternateIdentifiers>
<alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/5562498</alternateIdentifier>
</alternateIdentifiers>
<relatedIdentifiers>
<relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.5562497</relatedIdentifier>
<relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/plato2021</relatedIdentifier>
</relatedIdentifiers>
<rightsList>
<rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
</rightsList>
<descriptions>
<description descriptionType="Abstract">&lt;p&gt;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.&lt;/p&gt;</description>
</descriptions>
</resource>

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