Spectrum of {epsilon} Eri Virtual Observatory Resource

Authors
  1. Sim S.A.
  2. Jordan C.
  3. Published by
    CDS
Abstract

Measurements of ultraviolet line fluxes from Space Telescope Imaging Spectrograph and Far-Ultraviolet Spectroscopic Explorer spectra of the K2-dwarf eps Eri are reported. These are used to develop new emission measure distributions and semi-empirical atmospheric models for the chromosphere and lower transition region of the star. These models are the most detailed constructed to date for a main-sequence star other than the Sun. New ionization balance calculations, which account for the effect of finite density on dielectronic recombination rates, are presented for carbon, nitrogen, oxygen and silicon. The results of these calculations are significantly different from the standard Arnaud & Rothenflug ion balance, particularly for alkali-like ions. The new atmospheric models are used to place constraints on possible first ionization potential (FIP)-related abundance variations in the lower atmosphere and to discuss limitations of single-component models for the interpretation of certain optically thick line fluxes.

Keywords
  1. late-type-stars
  2. spectroscopy
  3. ultraviolet-astronomy
  4. astronomical-models
  5. stellar-atmospheres
Bibliographic source Bibcode
2005MNRAS.361.1102S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/361/1102
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/361/1102
Document Object Identifer DOI
doi:10.26093/cds/vizier.73611102

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/361/1102
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/361/1102
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/361/1102
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2006-07-08T21:28:02Z
Resource record created
2006-07-08T21:28:02Z
Created
2024-07-01T20:15:02Z
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