Photometric Study of the Short-Period Eclipsing Binary V441 Lac

Daimei Wang; Liyun Zhang; Xianming Han; Franz Agerer; Qingfeng Pi; Shuai Wang

doi:10.1016/j.newast.2014.09.013

Photometric Study of the Short-Period Eclipsing Binary V441 Lac

Daimei Wang, Liyun Zhang, Xianming Han, Franz Agerer, Qingfeng Pi, Shuai Wang

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

Abstract

<p> <p title="View the MathML source"> We present the first multi-color VRI CCD light curves of a short-period eclipsing binary star v441 Lac in this paper. We obtained our light curves on Oct. 4 and 8, 2013 at Xinglong station of National Astronomical Observatories, China. We updated the ephemeris of V441 Lac based on three new minima derived by our new observational data together with previously available light curve minima. By fitting the O−C (observed minus calculated) values of the minima, we found that the orbital period of V441 Lac exhibits an increasing trend of Ṗ=5.67(0.35)×10^-7 days/year, which might be explained by mass transfer from the secondary component to the primary one, or angular momentum exchange by magnetic activities. We also obtained the photometric orbital parameters with the Wilson & Devinney program. Our final result shows that the V441 Lac system is a semi-detached binary with the secondary component filling roche lobe. </p></p>

Original language	American English
Journal	Scholarship and Professional Work - LAS
Volume	36
DOIs	https://doi.org/10.1016/j.newast.2014.09.013
State	Published - Jan 1 2015

Keywords

binaries
eclipsing
individual V441 Lac
period evaluation
stars

Disciplines

Astrophysics and Astronomy
Stars, Interstellar Medium and the Galaxy

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http://dx.doi.org/10.1016/j.newast.2014.09.013

Cite this

@article{0fd01a2bb4f9425cb1f5ab0f7c85a3f5,

title = "Photometric Study of the Short-Period Eclipsing Binary V441 Lac",

abstract = " We present the first multi-color VRI CCD light curves of a short-period eclipsing binary star v441 Lac in this paper. We obtained our light curves on Oct. 4 and 8, 2013 at Xinglong station of National Astronomical Observatories, China. We updated the ephemeris of V441 Lac based on three new minima derived by our new observational data together with previously available light curve minima. By fitting the O\−C (observed minus calculated) values of the minima, we found that the orbital period of V441 Lac exhibits an increasing trend of {\.P}=5.67(0.35)\×10\textasciicircum{}-7 days/year, which might be explained by mass transfer from the secondary component to the primary one, or angular momentum exchange by magnetic activities. We also obtained the photometric orbital parameters with the Wilson \& Devinney program. Our final result shows that the V441 Lac system is a semi-detached binary with the secondary component filling roche lobe. ",

keywords = "binaries, eclipsing, individual V441 Lac, period evaluation, stars",

author = "Daimei Wang and Liyun Zhang and Xianming Han and Franz Agerer and Qingfeng Pi and Shuai Wang",

year = "2015",

month = jan,

day = "1",

doi = "10.1016/j.newast.2014.09.013",

language = "American English",

volume = "36",

journal = "Scholarship and Professional Work - LAS",

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TY - JOUR

T1 - Photometric Study of the Short-Period Eclipsing Binary V441 Lac

AU - Wang, Daimei

AU - Zhang, Liyun

AU - Han, Xianming

AU - Agerer, Franz

AU - Pi, Qingfeng

AU - Wang, Shuai

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We present the first multi-color VRI CCD light curves of a short-period eclipsing binary star v441 Lac in this paper. We obtained our light curves on Oct. 4 and 8, 2013 at Xinglong station of National Astronomical Observatories, China. We updated the ephemeris of V441 Lac based on three new minima derived by our new observational data together with previously available light curve minima. By fitting the O−C (observed minus calculated) values of the minima, we found that the orbital period of V441 Lac exhibits an increasing trend of Ṗ=5.67(0.35)×10^-7 days/year, which might be explained by mass transfer from the secondary component to the primary one, or angular momentum exchange by magnetic activities. We also obtained the photometric orbital parameters with the Wilson & Devinney program. Our final result shows that the V441 Lac system is a semi-detached binary with the secondary component filling roche lobe.

AB - We present the first multi-color VRI CCD light curves of a short-period eclipsing binary star v441 Lac in this paper. We obtained our light curves on Oct. 4 and 8, 2013 at Xinglong station of National Astronomical Observatories, China. We updated the ephemeris of V441 Lac based on three new minima derived by our new observational data together with previously available light curve minima. By fitting the O−C (observed minus calculated) values of the minima, we found that the orbital period of V441 Lac exhibits an increasing trend of Ṗ=5.67(0.35)×10^-7 days/year, which might be explained by mass transfer from the secondary component to the primary one, or angular momentum exchange by magnetic activities. We also obtained the photometric orbital parameters with the Wilson & Devinney program. Our final result shows that the V441 Lac system is a semi-detached binary with the secondary component filling roche lobe.

KW - binaries

KW - eclipsing

KW - individual V441 Lac

KW - period evaluation

KW - stars

UR - https://digitalcommons.butler.edu/facsch_papers/748

UR - http://dx.doi.org/10.1016/j.newast.2014.09.013

U2 - 10.1016/j.newast.2014.09.013

DO - 10.1016/j.newast.2014.09.013

M3 - Article

VL - 36

JO - Scholarship and Professional Work - LAS

JF - Scholarship and Professional Work - LAS

ER -

Photometric Study of the Short-Period Eclipsing Binary V441 Lac

Abstract

Keywords

Disciplines

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