Absolute properties of the oscillating eclipsing Algol XZ Ursae Majoris
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10491336" target="_blank" >RIV/00216208:11320/24:10491336 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lDC_.RZRG8" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lDC_.RZRG8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/pasj/psad085" target="_blank" >10.1093/pasj/psad085</a>
Alternative languages
Result language
angličtina
Original language name
Absolute properties of the oscillating eclipsing Algol XZ Ursae Majoris
Original language description
It is known from archival TESS data that the semi-detached Algol system XZ Ursae Majoris (UMa) is one of the candidate binary stars exhibiting short-period oscillations. We secured new high-resolution spectroscopic observations for the program target to better understand its binary and pulsation properties. From the echelle spectra, the radial velocities (RVs) of the eclipsing pair were derived, and the atmosphere parameters of the primary component were measured to be v(A)sin i = 80 +/- 7 km s(-1), T-eff,T- A = 7940 +/- 120 K, and [M/H] = -0.15 +/- 0.20. The combined solution of our double-lined RVs and the TESS data provides robust physical parameters for XZ UMa with mass and radius measurement precision of better than 2%. The outside-eclipse residuals from a mean light curve in the 0.002 phase bin were used for multifrequency analyses, and we extracted 32 significant frequencies (22 in <5.0 d(-1) and 10 in 39-52 d(-1)). The low frequencies may be mostly aliasing sidelobes, while six of the high frequencies may be pulsation signals arising from the detached primary located inside the delta Sct domain. Their periods, pulsation constants, and pulsational-orbital-period ratios indicate that the mass-accreting primary star is a delta Sct pulsator and, hence, XZ UMa is an oscillating eclipsing Algol.
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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Publication of the Astronomical Society of Japan
ISSN
0004-6264
e-ISSN
2053-051X
Volume of the periodical
76
Issue of the periodical within the volume
1
Country of publishing house
JP - JAPAN
Number of pages
12
Pages from-to
118-129
UT code for WoS article
001150803100001
EID of the result in the Scopus database
2-s2.0-85185157465