Poster Open Access

CHOCOLATE: a new Chromatic Line-Profile Tomography Technique to retrieve Transmission Spectroscopy

Emma Esparza-Borges; Mahmoudreza Oshagh; Núria Casasayas-Barris; Enric Pallé


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{
  "description": "<p>Multi-band&nbsp;photometric&nbsp;transit&nbsp;observations&nbsp;or&nbsp;low&nbsp;resolution&nbsp;spectroscopy&nbsp;(spectro-photometry)&nbsp;are&nbsp;normally&nbsp;used&nbsp;to&nbsp;retrieve&nbsp;the&nbsp;broadband&nbsp;transmission&nbsp;spectra&nbsp;of&nbsp;transiting&nbsp;exoplanets&nbsp;in&nbsp;order&nbsp;to&nbsp;assess&nbsp;the&nbsp;chemical&nbsp;composition&nbsp;of&nbsp;their&nbsp;atmospheres.&nbsp;Here,&nbsp;we&nbsp;present&nbsp;an&nbsp;alternative&nbsp;approach&nbsp;for&nbsp;recovering&nbsp;the&nbsp;broadband&nbsp;transmission&nbsp;spectra&nbsp;using&nbsp;chromatic&nbsp;Doppler&nbsp;Tomography.&nbsp;To&nbsp;validate&nbsp;the&nbsp;method&nbsp;and&nbsp;examine&nbsp;its&nbsp;performance,&nbsp;we&nbsp;used&nbsp;new&nbsp;observational&nbsp;data&nbsp;obtained&nbsp;with&nbsp;the&nbsp;ESPRESSO&nbsp;instrument&nbsp;to&nbsp;retrieve&nbsp;the<br>\ntransmission&nbsp;spectra&nbsp;of&nbsp;the&nbsp;archetypal&nbsp;hot&nbsp;Jupiter&nbsp;HD209458b.&nbsp;Our&nbsp;findings&nbsp;indicate&nbsp;that&nbsp;the&nbsp;recovered&nbsp;transmission&nbsp;spectrum&nbsp;is&nbsp;in&nbsp;good&nbsp;agreement&nbsp;with&nbsp;the&nbsp;results&nbsp;presented&nbsp;in&nbsp;previous&nbsp;studies,&nbsp;which&nbsp;used&nbsp;different&nbsp;methodologies&nbsp;to&nbsp;extract&nbsp;the&nbsp;spectrum.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Instituto de Astrof\u00edsica de Canarias", 
      "@id": "https://orcid.org/0000-0002-2341-3233", 
      "@type": "Person", 
      "name": "Emma Esparza-Borges"
    }, 
    {
      "affiliation": "Instituto de Astrof\u00edsica de Canarias", 
      "@id": "https://orcid.org/0000-0002-0715-8789", 
      "@type": "Person", 
      "name": "Mahmoudreza Oshagh"
    }, 
    {
      "affiliation": "Leiden Observatory", 
      "@id": "https://orcid.org/0000-0002-2891-8222", 
      "@type": "Person", 
      "name": "N\u00faria Casasayas-Barris"
    }, 
    {
      "affiliation": "Instituto de Astrof\u00edsica de Canarias", 
      "@id": "https://orcid.org/0000-0003-0987-1593", 
      "@type": "Person", 
      "name": "Enric Pall\u00e9"
    }
  ], 
  "url": "https://zenodo.org/record/5553440", 
  "datePublished": "2021-10-06", 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.5553440", 
  "@id": "https://doi.org/10.5281/zenodo.5553440", 
  "@type": "CreativeWork", 
  "name": "CHOCOLATE: a new Chromatic Line-Profile Tomography Technique to retrieve Transmission Spectroscopy"
}
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