Metallicities of KIC stars without planets Virtual Observatory Resource

Authors
  1. Buchhave L.A.
  2. Latham D.W.
  3. Published by
    CDS
Abstract

Host star metallicities have been used to infer observational constraints on planet formation throughout the history of the exoplanet field. The giant planet metallicity correlation has now been widely accepted, but questions remain as to whether the metallicity correlation extends to the small terrestrial-sized planets. Here, we report metallicities for a sample of 518 stars in the Kepler field that have no detected transiting planets and compare their metallicity distribution to a sample of stars that hosts small planets (Rp<1.7R_{Earth}_). Importantly, both samples have been analyzed in a homogeneous manner using the same set of tools (Stellar Parameters Classification tool). We find the average metallicity of the sample of stars without detected transiting planets to be [m/H]_SNTP,dwarf_=-0.02+/-0.02dex and the sample of stars hosting small planets to be [m/H]_STP_=-0.02+/-0.02dex. The average metallicities of the two samples are indistinguishable within the uncertainties, and the two-sample Kolmogorov-Smirnov test yields a p-value of 0.68 (0.41{sigma}), indicating a failure to reject the null hypothesis that the two samples are drawn from the same parent population. We conclude that the homogeneous analysis of the data presented here supports the hypothesis that stars hosting small planets have a metallicity similar to stars with no known transiting planets in the same area of the sky.

Keywords
  1. chemical-abundances
  2. dwarf-stars
Bibliographic source Bibcode
2015ApJ...808..187B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/808/187
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/808/187
Document Object Identifer DOI
doi:10.26093/cds/vizier.18080187

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/808/187
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/808/187
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/808/187
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/808/187/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/808/187/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/808/187/table1?

History

2015-12-24T14:14:23Z
Resource record created
2015-12-24T14:14:23Z
Created
2017-12-07T07:27:46Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr