Poster Open Access

How the stellar flicker noise affects the characterization of planetary transits ?

Sulis Sophia


JSON Export

{
  "files": [
    {
      "links": {
        "self": "https://zenodo.org/api/files/69bb1e2c-2ed5-4010-b431-a6157613ff96/poster_flicker_noise_sulis_et_al.pdf"
      }, 
      "checksum": "md5:d578e901269ce3eb2366fd16240dfd32", 
      "bucket": "69bb1e2c-2ed5-4010-b431-a6157613ff96", 
      "key": "poster_flicker_noise_sulis_et_al.pdf", 
      "type": "pdf", 
      "size": 141201
    }
  ], 
  "owners": [
    257834
  ], 
  "doi": "10.5281/zenodo.5552619", 
  "stats": {
    "version_unique_downloads": 39.0, 
    "unique_views": 77.0, 
    "views": 81.0, 
    "version_views": 81.0, 
    "unique_downloads": 39.0, 
    "version_unique_views": 77.0, 
    "volume": 6495246.0, 
    "version_downloads": 46.0, 
    "downloads": 46.0, 
    "version_volume": 6495246.0
  }, 
  "links": {
    "doi": "https://doi.org/10.5281/zenodo.5552619", 
    "conceptdoi": "https://doi.org/10.5281/zenodo.5552618", 
    "bucket": "https://zenodo.org/api/files/69bb1e2c-2ed5-4010-b431-a6157613ff96", 
    "conceptbadge": "https://zenodo.org/badge/doi/10.5281/zenodo.5552618.svg", 
    "html": "https://zenodo.org/record/5552619", 
    "latest_html": "https://zenodo.org/record/5552619", 
    "badge": "https://zenodo.org/badge/doi/10.5281/zenodo.5552619.svg", 
    "latest": "https://zenodo.org/api/records/5552619"
  }, 
  "conceptdoi": "10.5281/zenodo.5552618", 
  "created": "2021-10-06T12:48:01.815217+00:00", 
  "updated": "2021-10-06T16:03:33.626492+00:00", 
  "conceptrecid": "5552618", 
  "revision": 5, 
  "id": 5552619, 
  "metadata": {
    "access_right_category": "success", 
    "doi": "10.5281/zenodo.5552619", 
    "description": "<p>Stellar activity is known to limit exoplanet detection and characterization. Among this activity, stellar convection (``flicker&#39;&#39;) evolves during the typical transit timescales (~ hours) and affects the inferred transit parameters.<br>\nWe generated realistic simulations of transiting exoplanets based on solar HMI data. These simulations include planets from 1 to 10 Earth radii with different transit geometries. These simulations comprising hundreds of light curves are available to the community : https://doi.org/10.5281/zenodo.3686871<br>\nWe analyzed the data using standard MCMC methods assuming the noise is white and Gaussian (WGN), or a Gaussian Process (GP). We show that, in both cases, the resulting planet parameters can be affected by biases,<br>\nwhich leads to biased planetary radius measurements. This demonstrates the need to develop robust stellar noise modeling to achieve PLATO&#39;s goal of characterizing exoplanets transiting solar-like stars.<br>\nNext steps of this study will be to investigate<br>\ni) how other noise sources (e.g., flares, spots and faculae) affect the inferred exoplanet parameters,<br>\nii) which noise modeling allows to derive the most accurate transit parameters.</p>", 
    "language": "eng", 
    "title": "How the stellar flicker noise affects the characterization of planetary transits ?", 
    "license": {
      "id": "CC-BY-4.0"
    }, 
    "relations": {
      "version": [
        {
          "count": 1, 
          "index": 0, 
          "parent": {
            "pid_type": "recid", 
            "pid_value": "5552618"
          }, 
          "is_last": true, 
          "last_child": {
            "pid_type": "recid", 
            "pid_value": "5552619"
          }
        }
      ]
    }, 
    "communities": [
      {
        "id": "plato2021"
      }
    ], 
    "keywords": [
      "exoplanet, stellar activity, characterization"
    ], 
    "publication_date": "2021-10-06", 
    "creators": [
      {
        "orcid": "0000-0001-8783-526X", 
        "affiliation": "Laboratoire d'astrophysique de Marseille", 
        "name": "Sulis Sophia"
      }
    ], 
    "access_right": "open", 
    "resource_type": {
      "type": "poster", 
      "title": "Poster"
    }, 
    "related_identifiers": [
      {
        "scheme": "doi", 
        "identifier": "10.5281/zenodo.5552618", 
        "relation": "isVersionOf"
      }
    ]
  }
}
81
46
views
downloads
All versions This version
Views 8181
Downloads 4646
Data volume 6.5 MB6.5 MB
Unique views 7777
Unique downloads 3939

Share

Cite as