Abundances of 6 stars in Praesepe cluster Virtual Observatory Resource

Authors
  1. Vejar G.
  2. Schuler S.C.
  3. Stassun K.G.
  4. Published by
    CDS
Abstract

It is not yet fully understood how planet formation affects the properties of host stars, in or out of a cluster; however, abundance trends can help us understand this process. We present a detailed chemical abundance analysis of six stars in Praesepe, a planet-hosting open cluster. Pr0201 is known to host a close-in (period of 4.4days) giant planet (mass of 0.54M_J_), while the other five cluster members in our sample (Pr0133, Pr0081, Pr0208, Pr0051, and Pr0076) have no detected planets according to measurements of radial velocity. Using high-resolution echelle spectra with high signal-to-noise ratio obtained with Keck/HIRES and a novel approach to measurements of equivalent width (XSpect-EW), we derived abundances of up to 20 elements spanning a range of condensation temperatures (TC). We find a mean cluster metallicity of [Fe/H]=+0.21+/-0.02dex, in agreement with most previous determinations. We find most of our elements show an [X/Fe] scatter of ~0.02-0.03dex and conclude that our stellar sample is chemically homogeneous. The TC slope for the cluster mean abundances is consistent with zero and none of the stars in our sample exhibit individually a statistically significant TC slope. Using a planet engulfment model, we find that the planet host, Pr0201, shows no evidence of significant enrichment in its refractory elements when compared to the cluster mean that would be consistent with a planetary accretion scenario.

Keywords
  1. chemical-abundances
  2. g-stars
  3. exoplanets
  4. visible-astronomy
  5. spectroscopy
  6. line-intensities
  7. open-star-clusters
Bibliographic source Bibcode
2021ApJ...919..100V
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/919/100
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/919/100
Document Object Identifer DOI
doi:10.26093/cds/vizier.19190100

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/919/100
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/919/100
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/919/100
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/919/100/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/919/100/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/919/100/table1?

History

2023-03-03T09:48:38Z
Resource record created
2023-03-03T09:48:38Z
Created
2023-05-15T08:49:22Z
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