SpT & NIR color excess of Solar-type stars Virtual Observatory Resource

Authors
  1. Lewin C.D.
  2. Howell E.S.
  3. Vervack R.J.
  4. Fernandez Y.R.
  5. Magri C.,Marshall S.E.
  6. Crowell J.L.
  7. Hinkle M.L.
  8. Published by
    CDS
Abstract

Although solar-analog stars have been studied extensively over the past few decades, most of these studies have focused on visible wavelengths, especially those identifying solar-analog stars to be used as calibration tools for observations. As a result, there is a dearth of well-characterized solar analogs for observations in the near-infrared, a wavelength range important for studying solar system objects. We present 184 stars selected based on solar-like spectral type and V-J and V-K colors whose spectra we have observed in the 0.8-4.2{mu}m range for calibrating our asteroid observations. Each star has been classified into one of three ranks based on spectral resemblance to vetted solar analogs. Of our set of 184 stars, we report 145 as reliable solar-analog stars, 21 as solar analogs usable after spectral corrections with low-order polynomial fitting, and 18 as unsuitable for use as calibration standards owing to spectral shape, variability, or features at low to medium resolution. We conclude that all but five of our candidates are reliable solar analogs in the longer wavelength range from 2.5 to 4.2{mu}m. The average colors of the stars classified as reliable or usable solar analogs are V-J=1.148, V-H=1.418, and V-K= 1.491, with the entire set being distributed fairly uniformly in R.A. across the sky between -27{deg} and +67{deg} in decl.

Keywords
  1. g-stars
  2. infrared-astronomy
  3. spectroscopy
  4. two-color-diagrams
  5. infrared-photometry
  6. visible-astronomy
  7. photometry
  8. stellar-spectral-types
Bibliographic source Bibcode
2020AJ....160..130L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/130
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/160/130
Document Object Identifer DOI
doi:10.26093/cds/vizier.51600130

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/130
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/130
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/130
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IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/160/130/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/160/130/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/160/130/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/160/130/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/160/130/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/160/130/table1?

History

2020-11-20T08:12:05Z
Resource record created
2020-11-20T08:12:05Z
Created
2021-06-17T12:58:04Z
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