Long-term periodicities of cataclysmic variables with synoptic surveys

Michael Ting Chang Yang; Yi Chou; Chow Choong Ngeow; Chin Ping Hu; Yi Hao Su; Thomas A. Prince; Shrinivas R. Kulkarni; David Levitan; Russ Laher; Jason Surace; Andrew J. Drake; Stanislav G. Djorgovski; Ashish A. Mahabal; Matthew J. Graham; Ciro Donalek

doi:10.1088/1538-3873/aa7a99

Long-term periodicities of cataclysmic variables with synoptic surveys

Michael Ting Chang Yang, Yi Chou, Chow Choong Ngeow, Chin Ping Hu, Yi Hao Su, Thomas A. Prince, Shrinivas R. Kulkarni, David Levitan, Russ Laher, Jason Surace, Andrew J. Drake, Stanislav G. Djorgovski, Ashish A. Mahabal, Matthew J. Graham, Ciro Donalek

Graduate Institute of Astronomy

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository. The PTF light curves were combined with the Catalina Real-Time Transient Survey (CRTS) light curves and analyzed. Ten targets were found to exhibit long-term periodic variability, which is not frequently observed in the CV systems. These long-term variations are possibly caused by various mechanisms, such as the precession of the accretion disk, hierarchical triple star system, magnetic field change of the companion star, and other possible mechanisms. We discuss the possible mechanisms in this study. If the long-term period is less than several tens of days, the disk precession period scenario is favored. However, the hierarchical triple star system or the variations in magnetic field strengths are most likely the predominant mechanisms for longer periods.

Original language	English
Article number	094202
Journal	Publications of the Astronomical Society of the Pacific
Volume	129
Issue number	979
DOIs	https://doi.org/10.1088/1538-3873/aa7a99
State	Published - 1 Sep 2017

Keywords

(stars:) novae-cataclysmic variables
Close-surveys-catalogs-methods
Data analysis-methods
Observational
Stars: binaries (including multiple)

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10.1088/1538-3873/aa7a99

Using Variability to Probe the Properties of Binary Orbit, Accretion Disk and Compact Object of Accreting Binaries
Chou, Y. (PI)
1/08/16 → 31/07/17
Project: Research
探高計畫之再上層樓：從鹿林到ZTF(1/2)
Ip, W.-H. (PI)
1/08/15 → 31/10/16
Project: Research

Cite this

Yang, M. T. C., Chou, Y., Ngeow, C. C., Hu, C. P., Su, Y. H., Prince, T. A., Kulkarni, S. R., Levitan, D., Laher, R., Surace, J., Drake, A. J., Djorgovski, S. G., Mahabal, A. A., Graham, M. J., & Donalek, C. (2017). Long-term periodicities of cataclysmic variables with synoptic surveys. Publications of the Astronomical Society of the Pacific, 129(979), Article 094202. https://doi.org/10.1088/1538-3873/aa7a99

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title = "Long-term periodicities of cataclysmic variables with synoptic surveys",

abstract = "A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository. The PTF light curves were combined with the Catalina Real-Time Transient Survey (CRTS) light curves and analyzed. Ten targets were found to exhibit long-term periodic variability, which is not frequently observed in the CV systems. These long-term variations are possibly caused by various mechanisms, such as the precession of the accretion disk, hierarchical triple star system, magnetic field change of the companion star, and other possible mechanisms. We discuss the possible mechanisms in this study. If the long-term period is less than several tens of days, the disk precession period scenario is favored. However, the hierarchical triple star system or the variations in magnetic field strengths are most likely the predominant mechanisms for longer periods.",

keywords = "(stars:) novae-cataclysmic variables, Close-surveys-catalogs-methods, Data analysis-methods, Observational, Stars: binaries (including multiple)",

author = "Yang, {Michael Ting Chang} and Yi Chou and Ngeow, {Chow Choong} and Hu, {Chin Ping} and Su, {Yi Hao} and Prince, {Thomas A.} and Kulkarni, {Shrinivas R.} and David Levitan and Russ Laher and Jason Surace and Drake, {Andrew J.} and Djorgovski, {Stanislav G.} and Mahabal, {Ashish A.} and Graham, {Matthew J.} and Ciro Donalek",

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Yang, MTC, Chou, Y , Ngeow, CC, Hu, CP, Su, YH, Prince, TA, Kulkarni, SR, Levitan, D, Laher, R, Surace, J, Drake, AJ, Djorgovski, SG, Mahabal, AA, Graham, MJ & Donalek, C 2017, 'Long-term periodicities of cataclysmic variables with synoptic surveys', Publications of the Astronomical Society of the Pacific, vol. 129, no. 979, 094202. https://doi.org/10.1088/1538-3873/aa7a99

TY - JOUR

T1 - Long-term periodicities of cataclysmic variables with synoptic surveys

AU - Yang, Michael Ting Chang

AU - Chou, Yi

AU - Ngeow, Chow Choong

AU - Hu, Chin Ping

AU - Su, Yi Hao

AU - Prince, Thomas A.

AU - Kulkarni, Shrinivas R.

AU - Levitan, David

AU - Laher, Russ

AU - Surace, Jason

AU - Drake, Andrew J.

AU - Djorgovski, Stanislav G.

AU - Mahabal, Ashish A.

AU - Graham, Matthew J.

AU - Donalek, Ciro

PY - 2017/9/1

Y1 - 2017/9/1

N2 - A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository. The PTF light curves were combined with the Catalina Real-Time Transient Survey (CRTS) light curves and analyzed. Ten targets were found to exhibit long-term periodic variability, which is not frequently observed in the CV systems. These long-term variations are possibly caused by various mechanisms, such as the precession of the accretion disk, hierarchical triple star system, magnetic field change of the companion star, and other possible mechanisms. We discuss the possible mechanisms in this study. If the long-term period is less than several tens of days, the disk precession period scenario is favored. However, the hierarchical triple star system or the variations in magnetic field strengths are most likely the predominant mechanisms for longer periods.

AB - A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository. The PTF light curves were combined with the Catalina Real-Time Transient Survey (CRTS) light curves and analyzed. Ten targets were found to exhibit long-term periodic variability, which is not frequently observed in the CV systems. These long-term variations are possibly caused by various mechanisms, such as the precession of the accretion disk, hierarchical triple star system, magnetic field change of the companion star, and other possible mechanisms. We discuss the possible mechanisms in this study. If the long-term period is less than several tens of days, the disk precession period scenario is favored. However, the hierarchical triple star system or the variations in magnetic field strengths are most likely the predominant mechanisms for longer periods.

KW - (stars:) novae-cataclysmic variables

KW - Close-surveys-catalogs-methods

KW - Data analysis-methods

KW - Observational

KW - Stars: binaries (including multiple)

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U2 - 10.1088/1538-3873/aa7a99

DO - 10.1088/1538-3873/aa7a99

M3 - 期刊論文

AN - SCOPUS:85028336176

SN - 0004-6280

VL - 129

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

IS - 979

M1 - 094202

ER -

Long-term periodicities of cataclysmic variables with synoptic surveys

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Keywords

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Projects

Using Variability to Probe the Properties of Binary Orbit, Accretion Disk and Compact Object of Accreting Binaries

探高計畫之再上層樓：從鹿林到ZTF(1/2)

Cite this