Limb-darkening coefficients for red giants Virtual Observatory Resource

Authors
  1. Neilson H.R.
  2. Lester J.B.
  3. Published by
    CDS
Abstract

Model stellar atmospheres are fundamental tools for understanding stellar observations from interferometry, microlensing, eclipsing binaries and planetary transits. However, the calculations also include assumptions, such as the geometry of the model. We use intensity profiles computed for both plane-parallel and spherically symmetric model atmospheres to determine fitting coefficients in the BVRIHK, CoRoT and Kepler wavebands for limb darkening using several different fitting laws, for gravity-darkening and for interferometric angular diameter corrections. Comparing predicted variables for each geometry, we find that the spherically symmetric model geometry leads to different predictions for surface gravities logg<3. In particular, the most commonly used limb-darkening laws produce poor fits to the intensity profiles of spherically symmetric model atmospheres, which indicates the need for more sophisticated laws. Angular diameter corrections for spherically symmetric models range from 0.67 to 1, compared to the much smaller range from 0.95 to 1 for plane-parallel models.

Keywords
  1. astronomical-models
  2. stellar-atmospheres
  3. late-type-stars
  4. giant-stars
  5. infrared-photometry
  6. visible-astronomy
  7. Wide-band photometry
Bibliographic source Bibcode
2013A&A...554A..98N
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/554/A98
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/554/A98
Document Object Identifer DOI
doi:10.26093/cds/vizier.35540098

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/554/A98
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/554/A98
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/554/A98
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2013-06-24T08:26:07Z
Resource record created
2013-06-24T08:26:07Z
Created
2013-12-29T22:33:40Z
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