KPNO spectroscopy of G & K dwarfs HIP stars Virtual Observatory Resource

Authors
  1. Kim B.
  2. An D.
  3. Stauffer J.R.
  4. Lee Y.S.
  5. Terndrup D.M.
  6. Johnson J.A.
  7. Published by
    CDS
Abstract

The tension between the Hipparcos parallax of the Pleiades and other independent distance estimates continues even after the new reduction of the Hipparcos astrometric data and the development of a new geometric distance measurement for the cluster. A short Pleiades distance from the Hipparcos parallax predicts a number of stars in the solar neighborhood that are sub-luminous at a given photospheric abundance. We test this hypothesis using the spectroscopic abundances for a subset of stars in the Hipparcos catalog, which occupy the same region as the Pleiades in the color-magnitude diagram. We derive stellar parameters for 170 nearby G- and K-type field dwarfs in the Hipparcos catalog based on high-resolution spectra obtained using KPNO 4m echelle spectrograph. Our analysis shows that, when the Hipparcos parallaxes are adopted, most of our sample stars follow empirical color-magnitude relations. A small fraction of stars are too faint compared to main-sequence fitting relations by {Delta}M_V_>~0.3mag, but the differences are marginal at a 2{sigma} level, partly due to relatively large parallax errors. On the other hand, we find that the photometric distances of stars showing signatures of youth as determined from lithium absorption line strengths and R'_HK_ chromospheric activity indices are consistent with the Hipparcos parallaxes. Our result is contradictory to a suggestion that the Pleiades distance from main-sequence fitting is significantly altered by stellar activity and/or the young age of its stars, and provides an additional supporting evidence for the long-distance scale of the Pleiades.

Keywords
  1. metallicity
  2. line-intensities
  3. spectroscopy
  4. visible-astronomy
  5. Wide-band photometry
Bibliographic source Bibcode
2016ApJS..222...19K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/222/19
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/222/19
Document Object Identifer DOI
doi:10.26093/cds/vizier.22220019

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/222/19
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/222/19
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/222/19
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/ApJS/222/19/kpno?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/222/19/kpno?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/222/19/kpno?

History

2016-11-14T15:01:09Z
Resource record created
2016-11-14T15:01:09Z
Created
2019-05-08T15:06:08Z
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