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

J 2016

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

LIAO, Wen-Ping, Shengbang QIAN, Miloslav ZEJDA, Liying ZHU, Lin-Jia LI et. al.

Základní údaje

Originální název

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

Autoři

LIAO, Wen-Ping (156 Čína), Shengbang QIAN (156 Čína), Miloslav ZEJDA (203 Česká republika, garant, domácí), Liying ZHU (156 Čína) a Lin-Jia LI (156 Čína)

Vydání

Research in Astronomy and Astrophysics, BEIJING, Science Press, 2016, 1674-4527

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Čína

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.371

Kód RIV

RIV/00216224:14310/16:00093971

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1088/1674-4527/16/6/094

UT WoS

000377524600009

Klíčová slova anglicky

stars: binaries: close; stars: binaries: eclipsing; stars: individual (TW Draco)

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 4. 2017 22:08, Ing. Andrea Mikešková

Anotace

V originále

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 37.27 yr can be explained as the result of two circumbinary companions that are orbiting around TW Dra, where the two companions are in simple 3 : 5 orbit-rotation resonances. TW Dra itself is a basic binary in a possible sextuple system with the configuration (1 + 1) + (1 + 1) + (1 + 1), which further suggests that multiplicity may be a fairly common phenomenon in close binary systems.

Návaznosti

LH14300, projekt VaV

Název: Výzkum zvláštních proměnných hvězd

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Výzkum zvláštních proměnných hvězd

Citovat

LIAO, Wen-Ping, Shengbang QIAN, Miloslav ZEJDA, Liying ZHU a Lin-Jia LI. Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra. Research in Astronomy and Astrophysics. BEIJING: Science Press, 2016, roč. 16, č. 6, s. "nestrankovano", 6 s. ISSN 1674-4527. Dostupné z: https://dx.doi.org/10.1088/1674-4527/16/6/094.

@article{1376294,
   author = {Liao, WenandPing and Qian, Shengbang and Zejda, Miloslav and Zhu, Liying and Li, LinandJia},
   article_location = {BEIJING},
   article_number = {6},
   doi = {http://dx.doi.org/10.1088/1674-4527/16/6/094},
   keywords = {stars: binaries: close; stars: binaries: eclipsing; stars: individual (TW Draco)},
   language = {eng},
   issn = {1674-4527},
   journal = {Research in Astronomy and Astrophysics},
   title = {Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra},
   volume = {16},
   year = {2016}
}

TY  - JOUR
ID  - 1376294
AU  - Liao, Wen-Ping - Qian, Shengbang - Zejda, Miloslav - Zhu, Liying - Li, Lin-Jia
PY  - 2016
TI  - Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra
JF  - Research in Astronomy and Astrophysics
VL  - 16
IS  - 6
SP  - "nestrankovano"
EP  - "nestrankovano"
PB  - Science Press
SN  - 16744527
KW  - stars: binaries: close
KW  - stars: binaries: eclipsing
KW  - stars: individual (TW Draco)
N2  - 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 37.27 yr can be explained as the result of two circumbinary companions that are orbiting around TW Dra, where the two companions are in simple 3 : 5 orbit-rotation resonances. TW Dra itself is a basic binary in a possible sextuple system with the configuration (1 + 1) + (1 + 1) + (1 + 1), which further suggests that multiplicity may be a fairly common phenomenon in close binary systems.
ER  -

LIAO, Wen-Ping, Shengbang QIAN, Miloslav ZEJDA, Liying ZHU a Lin-Jia LI. Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra. \textit{Research in Astronomy and Astrophysics}. BEIJING: Science Press, 2016, roč.~16, č.~6, s.~''nestrankovano'', 6 s. ISSN~1674-4527. Dostupné z: https://dx.doi.org/10.1088/1674-4527/16/6/094.

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