Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F16%3A00093971" target="_blank" >RIV/00216224:14310/16:00093971 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1674-4527/16/6/094" target="_blank" >http://dx.doi.org/10.1088/1674-4527/16/6/094</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1674-4527/16/6/094" target="_blank" >10.1088/1674-4527/16/6/094</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra

Popis výsledku v původním jazyce

By using the Lunar-based Ultraviolet Telescope (LUT) from 2014 December 2 to December 4, the first near-UV light curve of the well-known Algol-type binary TW Dra is reported, which is analyzed with the 2013 version of the W-D code. Our solutions confirmed that TW Dra is a semi-detached binary system where the secondary component fills its Roche lobe. The mass ratio and a high inclination are obtained (q = 0.47, i = 86.68 degrees). Based on 589 available data spanning more than one century, the complex period changes are studied. Secular increase and three cyclical changes are found in the corresponding orbital period analysis. The secular increase changes reveal mass transfer from the secondary component to the primary one at a rate of 6.8 x 10(-7) M(circle dot)yr(-1). One large cyclical change of 116.04 yr may be caused by disturbance of visual component ADS 9706B orbiting TW Dra (ADS 9706A), while the other two cyclical changes with shorter periods of 22.47 and 37.

Název v anglickém jazyce

Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra

Popis výsledku anglicky

By using the Lunar-based Ultraviolet Telescope (LUT) from 2014 December 2 to December 4, the first near-UV light curve of the well-known Algol-type binary TW Dra is reported, which is analyzed with the 2013 version of the W-D code. Our solutions confirmed that TW Dra is a semi-detached binary system where the secondary component fills its Roche lobe. The mass ratio and a high inclination are obtained (q = 0.47, i = 86.68 degrees). Based on 589 available data spanning more than one century, the complex period changes are studied. Secular increase and three cyclical changes are found in the corresponding orbital period analysis. The secular increase changes reveal mass transfer from the secondary component to the primary one at a rate of 6.8 x 10(-7) M(circle dot)yr(-1). One large cyclical change of 116.04 yr may be caused by disturbance of visual component ADS 9706B orbiting TW Dra (ADS 9706A), while the other two cyclical changes with shorter periods of 22.47 and 37.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/LH14300" target="_blank" >LH14300: Výzkum zvláštních proměnných hvězd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Research in Astronomy and Astrophysics

ISSN

1674-4527

e-ISSN

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Svazek periodika

16

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

6

Strana od-do

"nestrankovano"

Kód UT WoS článku

000377524600009

EID výsledku v databázi Scopus

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