A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00548962" target="_blank" >RIV/67985815:_____/21:00548962 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/21:00121712

Výsledek na webu

<a href="https://doi.org/10.1093/mnras/stab336" target="_blank" >https://doi.org/10.1093/mnras/stab336</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stab336" target="_blank" >10.1093/mnras/stab336</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020

Popis výsledku v původním jazyce

We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and delta Scuti-type pulsations with a mode frequency of 21.09533 d(-1). This pulsation exhibits a septuplet of orbital sidelobes as well as a harmonic quintuplet. Using the oblique pulsatormodel, the primary oscillation is identified as a sectoral dipole mode with l = 1, vertical bar m vertical bar = 1. We find the pulsating star to have M-1 similar or equal to 2.5M(circle dot), R-1 similar or equal to 3R(circle dot), and T-eff, 1 similar or equal to 8000 K, while the secondary has M-2 similar or equal to 1.1M(circle dot), R-2 similar or equal to 2R(circle dot), and T-eff, 2 similar or equal to 5600 K. Both stars appear to be close to filling their respective Roche lobes. The properties of this binary as well as the tidally tilted pulsations differ from the previous two tidally tilted pulsators, HD74423 and CO Cam, in important ways. We also study the prior history of this system with binary evolution models and conclude that extensive mass transfer has occurred from the current secondary to the primary.

Název v anglickém jazyce

A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020

Popis výsledku anglicky

We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and delta Scuti-type pulsations with a mode frequency of 21.09533 d(-1). This pulsation exhibits a septuplet of orbital sidelobes as well as a harmonic quintuplet. Using the oblique pulsatormodel, the primary oscillation is identified as a sectoral dipole mode with l = 1, vertical bar m vertical bar = 1. We find the pulsating star to have M-1 similar or equal to 2.5M(circle dot), R-1 similar or equal to 3R(circle dot), and T-eff, 1 similar or equal to 8000 K, while the secondary has M-2 similar or equal to 1.1M(circle dot), R-2 similar or equal to 2R(circle dot), and T-eff, 2 similar or equal to 5600 K. Both stars appear to be close to filling their respective Roche lobes. The properties of this binary as well as the tidally tilted pulsations differ from the previous two tidally tilted pulsators, HD74423 and CO Cam, in important ways. We also study the prior history of this system with binary evolution models and conclude that extensive mass transfer has occurred from the current secondary to the primary.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/EF16_027%2F0008360" target="_blank" >EF16_027/0008360: Postdoc@MUNI</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Svazek periodika

503

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

254-69

Kód UT WoS článku

000641987400016

EID výsledku v databázi Scopus

2-s2.0-85105214384