4562755
doi
10.5281/zenodo.4562755
oai:zenodo.org:4562755
user-coolstars20half
Wolk, Scott
Harvard-Smithsonian Center for Astrophysics
Wilson, Robert
University of Virginia
Martinez, Cintia
Observatório Nacional
Cunha, Katia
Observatório Nacional/Steward Observatory/University of Arizona
Smith, Verne
National Optical Astronomy Observatory
Majewski, Steven
University of Virginia
New insights on the relation between stellar metallicity and the architectures of planetary systems
Ghezzi, Luan
Observatório do Valongo/UFRJ
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Stellar systems, clusters, and associations
Fundamental parameters of stars
Chemical abundances
Planetary system formation
<p><strong>Correlations between stellar and planetary properties provide important information about the processes of planet formation and evolution and the resulting architectures of planetary systems. Recent studies have provided evidence that higher stellar metallicities are connected to the presence of planets of certain sizes and orbital periods. In this work, we explored these relations further by focusing on planetary systems instead of individual planets. We derived independent and homogeneous iron abundances for a sample of 1005 planet hosting stars from the California-Kepler Survey (CKS) using a classical LTE spectroscopic analysis. Although we confirmed the well-known result that the metallicities of stars hosting large planets are significantly skewed to higher metallicities relative to systems with only small planets, we also found that the boundary between the large- and small-planet regimes occurs at Rp = 4.4 R_Earth. We observed that the previously reported differences between the host-star metallicity distributions for hot and warm planets also hold for planetary systems, with the former being more metal-rich. However, we show that planet multiplicity also plays an important role and these differences seem to be larger for multiple relative to single planet systems. The most significant difference is seen for systems hosting only Super-Earths and a similar result is not found for systems hosting only Sub-Neptunes, revealing an important distinction within the regime of small planets.</strong></p>
Zenodo
2021-02-25
info:eu-repo/semantics/other
4562754
user-coolstars20half
1614290180.556022
1983309
md5:53c4e813d19d8a80b79411c111a09772
https://zenodo.org/records/4562755/files/Ghezzi_L.mp4
1077214
md5:6f349461e5c2fd130305499395e836c4
https://zenodo.org/records/4562755/files/PosterLuanGhezzi.pdf
155762
md5:c4e5baff250a1a8b21c722383bf072d1
https://zenodo.org/records/4562755/files/PosterThumbnailLuanGhezzi.png
public
10.5281/zenodo.4562754
isVersionOf
doi