Photometric and spectroscopic study of Algol EW Bootis Virtual Observatory Resource

Authors
  1. Kim H.-Y.
  2. Hong K.
  3. Kim C.-H.
  4. Lee J.W.
  5. Jeong M.-J.
  6. Park J.-H.
  7. Song M.-H.
  8. Published by
    CDS
Abstract

In this paper, we present Transiting Exoplanet Survey Satellite (TESS) photometry and high-resolution spectra of the short-period Algol-EW-Boo. We obtained double-lined radial velocities (RVs) from the time-series spectra and measured the effective temperature of the primary star as Teff,1=8560{+/-}118K. For the orbital period study, we collected all times of minima available for over the last 30yr. It was found that the eclipse timing variation of the system could be represented by a periodic oscillation of 17.6{+/-}0.3yr with a semiamplitude of 0.0041{+/-}0.0001day. The orbital and physical parameters were derived by simultaneously analyzing the TESS light and RV curves using the Wilson-Devinney (WD) binary star modeling code. The component masses and radii were showed over 3% precision: M1=2.67{+/-}0.08M{sun}, M2=0.43{+/-}0.01M{sun}, R1=2.01{+/-}0.02R{sun}, and R2=1.35{+/-}0.01R{sun}. Furthermore, multiple frequency analyses were performed for the light-curve residuals from the WD model. As a result, we detected 17 pressure-mode pulsations in the region of 40.15-52.37/day. The absolute dimensions and pulsation characteristics showed that the {delta}Sct pulsator was the more massive and hotter primary star of the EW Boo.

Keywords
  1. eclipsing-binary-stars
  2. variable-stars
  3. photometry
  4. visible-astronomy
  5. spectroscopy
  6. infrared-astronomy
  7. radial-velocity
Bibliographic source Bibcode
2022AJ....164..216K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/216
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/164/216
Document Object Identifer DOI
doi:10.26093/cds/vizier.51640216

Access

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https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/216
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/216
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/216
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History

2023-02-08T12:04:32Z
Resource record created
2023-02-08T12:04:32Z
Created
2023-03-29T13:15:25Z
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