Absolute Properties of the Oscillating Eclipsing Algol X Trianguli
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10475210" target="_blank" >RIV/00216208:11320/23:10475210 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=EMoFLRI4d2" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=EMoFLRI4d2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-3881/acbe9d" target="_blank" >10.3847/1538-3881/acbe9d</a>
Alternative languages
Result language
angličtina
Original language name
Absolute Properties of the Oscillating Eclipsing Algol X Trianguli
Original language description
We report results from the TESS photometric data and new high-resolution spectra of the Algol system X Tri showing short-period pulsations. From the echelle spectra, the radial velocities of the eclipsing pair were measured, and the rotational rate and effective temperature of the primary star were obtained to be v (1)sini = 84 +/- 6 km s(-1) and T (eff,1) = 7900 +/- 110 K, respectively. The synthetic modeling of these observations implies that X Tri is in synchronous rotation and is physically linked to a visual companion TIC 28391715 at a separation of about 6.'' 5. The absolute parameters of our target star were accurately and directly determined to be M (1) = 2.137 +/- 0.018 M (circle dot), M (2) = 1.101 +/- 0.010 M (circle dot), R (1) = 1.664 +/- 0.010 R (circle dot), R (2) = 1.972 +/- 0.010 R (circle dot), L (1) = 9.67 +/- 0.55 L (circle dot), and L (2) = 2.16 +/- 0.09 L (circle dot). The phase-binned mean light curve was used to remove the binary effect from the observed TESS data. Multifrequency analysis of the residuals revealed 16 significant frequencies, of which the high-frequency signals between 37 day(-1) and 48 day(-1) can be considered probable pulsation modes. Their oscillation periods of 0.021-0.027 days and pulsation constants of 0.014-0.018 days are typical values of delta Sct variables. The overall results demonstrate that X Tri is an oEA star system consisting of a delta Sct primary and its lobe-filling companion in the semidetached configuration.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
The Astronomical Journal
ISSN
0004-6256
e-ISSN
1538-3881
Volume of the periodical
165
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
159
UT code for WoS article
000949717900001
EID of the result in the Scopus database
2-s2.0-85150494503