Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii

We present the analysis results of an eclipsing cataclysmic variable (CV) V729 Sgr, based on our observations and American Association of Variable Star Observers data. Some outburst parameters are determined, such as outburst amplitude (A n) and recurrence time (T n), and then the relationship betwe...

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Detalles Bibliográficos
Autores principales: Han Zhongtao, Qian Shengbang, Fernández Lajús, Eduardo Eusebio, Voloshina Irina, Zhu Liying
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Astronómicas
binaries: eclipsing
novae, cataclysmic variables
stars: individual (V729 Sagittarii)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87574
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87574
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
binaries: eclipsing
novae, cataclysmic variables
stars: individual (V729 Sagittarii)
spellingShingle Ciencias Astronómicas
binaries: eclipsing
novae, cataclysmic variables
stars: individual (V729 Sagittarii)
Han Zhongtao
Qian Shengbang
Fernández Lajús, Eduardo Eusebio
Voloshina Irina
Zhu Liying
Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
topic_facet Ciencias Astronómicas
binaries: eclipsing
novae, cataclysmic variables
stars: individual (V729 Sagittarii)
description We present the analysis results of an eclipsing cataclysmic variable (CV) V729 Sgr, based on our observations and American Association of Variable Star Observers data. Some outburst parameters are determined, such as outburst amplitude (A n) and recurrence time (T n), and then the relationship between A n and T n is discussed. A cursory examination of the long-term light curves reveals that there are small-amplitude outbursts and dips present, which is similar to the behavior seen in some novalike CVs (NLs). More detailed inspection suggests that the outbursts in V729 Sgr may be Type A (outside-in) with a rise time ∼1.76 d. Further analysis also shows that V729 Sgr is an intermediate between dwarf nova and NLs, and we constrain its mass transfer rate to 1.59 × 10-9 <5.M2 < 5.8 × 10-9 M⊙yr-1 by combining the theory for Z Cam type stars with observations. Moreover, the rapid oscillations in V729 Sgr were detected and analyzed for the first time. Our results indicate that the oscillation at ∼25.5 s is a true dwarf nova oscillation (DNO), being associated with the accretion events. The classification of the oscillations at ∼136 and 154 s as longer-period DNOs (lpDNOs) is based on the relation between P lpDNOs and P DNOs. Meanwhile, quasi-periodic oscillations with periods of hundreds of seconds are also detected.
format Articulo
Preprint
author Han Zhongtao
Qian Shengbang
Fernández Lajús, Eduardo Eusebio
Voloshina Irina
Zhu Liying
author_facet Han Zhongtao
Qian Shengbang
Fernández Lajús, Eduardo Eusebio
Voloshina Irina
Zhu Liying
author_sort Han Zhongtao
title Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
title_short Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
title_full Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
title_fullStr Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
title_full_unstemmed Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
title_sort long-term photometric behavior of the eclipsing cataclysmic variable v729 sagittarii
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87574
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AT voloshinairina longtermphotometricbehavioroftheeclipsingcataclysmicvariablev729sagittarii
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bdutipo_str Repositorios
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