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.

Basic information

Original name

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

Authors

LIAO, Wen-Ping (156 China), Shengbang QIAN (156 China), Miloslav ZEJDA (203 Czech Republic, guarantor, belonging to the institution), Liying ZHU (156 China) and Lin-Jia LI (156 China)

Edition

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

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

China

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.371

RIV identification code

RIV/00216224:14310/16:00093971

Organization unit

Faculty of Science

DOI

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

UT WoS

000377524600009

Keywords in English

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

Abstract

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.

Links

LH14300, research and development project

Name: Výzkum zvláštních proměnných hvězd

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

LIAO, Wen-Ping, Shengbang QIAN, Miloslav ZEJDA, Liying ZHU and 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, vol. 16, No 6, p. "nestrankovano", 6 pp. ISSN 1674-4527. Available from: 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 and 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, vol.~16, No~6, p.~''nestrankovano'', 6 pp. ISSN~1674-4527. Available from: https://dx.doi.org/10.1088/1674-4527/16/6/094.

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