Education, Science, Technology, Innovation and Life
Open Access
Sign In
  1. Home
  2. Journals
  3. Advances in Computer, Signals and Systems
  4. Vol 7, Issue 5, 2023

New Complete BVR Lightcurves of a Poorly Investigated for NSVS12324385

Download as PDF

DOI: 10.23977/acss.2023.070506 | Downloads: 15 | Views: 343

Author(s)

Delin Tang 1, Dandan Feng 1, Xiaobo Wen 1

Affiliation(s)

1 Sichuan Minzu College, Kangding, 626001, China

Corresponding Author

Delin Tang

ABSTRACT

In this paper, new complete BVR light curves of a poorly investigated contact binary, NSVS12324385, at the short-period cutoff are presented. Eleven eclipse times are observed in the light curves. An orbital period of P = 0.2313926(5) days is obtained and ephemeris is given by O−C method base on the analysis of all available eclipse times. The variations in the orbital period are investigated to be dp/dt =−4.939971462 (3) × 10−9 days•yr−1. We analyse the light curves of the binary system by using the 2013 version of the Wilson Devinney(WD) code, and obtain the first photometric solution which indicates that NSVS12324385 is a W-type W UMa system with a mass ratio of q = M2/M1 = 2.947 ± 0.001 and a contact degree of f=5.9%. The system has a low inclination of i=66.04° and a temperature difference of 272K between two components. To explain the asymmetry of the light curves, we add a cool spot located near the neck region of the more massive component.

KEYWORDS

Binaries; eclipsing−stars; NSVS 12324385; late−type

CITE THIS PAPER

Delin Tang, Dandan Feng, Xiaobo Wen. New Complete BVR Lightcurves of a Poorly Investigated for NSVS12324385. Advances in Computer, Signals and Systems (2023) Vol. 7: 35-41. DOI: http://dx.doi.org/10.23977/acss.2023.070506.

REFERENCES

[1] Rucin´ski, S. M. (2007) The short-period end of the contact binary period distribution based on the All-Sky Automated Survey. MNRAS, 382, 393. 
[2] Rucin´ski, S. M. (1992) Can full convection explain the observed short-period limit of the W UMa-type binaries? AJ, 103, 960. 
[3] Stepien, K. (2006) The Low-Mass Limit for Total Mass of W UMa-type Binaries. A&A, 56, 347. 
[4] Stepien, K. (2011) Evolution of Cool Close Binaries - Approach to Contact. Acta Astronomica, 61, 139. 
[5] Jiang, D., Han, Z., Ge, H., Yang, L., & Li, L. (2012) The short-period limit of contact binaries. MNRAS, 421, 2769. 
[6] Pribulla, T., Rucin´ski, S. M., & Conidis, G. et al. (2007) Radial Velocity Studies of Close Binary Stars. XII. . AJ, 133, 1977. 
[7] Zola, S., Gazeas, K., & Kreiner, J. M. et al. (2010) Physical parameters of components in close binary systems – VII. MNRAS, 408, 464. 
[8] Kose, O., Kalomeni, B., Keskin, V., Ulas, B., & Yakut, K. (2011) The short-period low-mass binary system CC Com revisited. AN, 332, 626. 
[9] Rucin´ski, S. M., & Pribulla, T. (2008) The shortest period field contact binary*. MNRAS, 388, 1831. 
[10] Yang, Y. -G., Wei, J. -Y., & Li, H. -L. (2010) The absolute properties and evolutionary state for the shortest period field contact binary GSC 1387-0475. New Astronomy, 15, 155. 
[11] Pribulla, T., Van´ko, M., & Hamb´alek, L. (2009) ASAS J071829-0336. 7: Short-Period End for Contact Binaries Redefined. Information Bulletin on Variable Stars, 5886. 
[12] Zhang, X. B., Deng, L. C., Wang, K., et al. (2014) NSVS4484038, a Contact Binary System at the Short-period Cutoff. The Astronomical Journal, 148, 40. 
[13] Norton, A. J., Payne, S. G., Evans, T., et al. (2011) Short period eclipsing binary candidates identified using Super WASP. A&A, 528, 90. 
[14] Elkhateeb, M. M., Saad, S. M., Nouh, M. I., & Shokry, A. (2014) Photometric study of the newly discovered short period eclipsing binary 1SWASP J133105. 91 + 121538. 0. New Astronomy, 28, 85. 
[15] Jiang, L. -Q., Qian, S. -B., Zhang, J., & Zhou, X. (2015) 1SWASP J074658. 62+224448. 5: A Low Mass-ratio Contact Binary at the Period Cutoff. AJ, 149, 169. 
[16] Lohr, M. E., Norton, A. J., Kolb, U. C., et al. (2012) Period decrease in three SuperWASP eclipsing binary candidates near the short-period limit. A&A, 542, 124. 
[17] Hoffman, D. I., Harrison, T. E., & McNamara, B. J. (2009) Automated Variable Star Classification Using the Northern Sky Variability Survey. AJ, 138, 466. 
[18] Deb, S., & Singh, H. P. (2011) Physical parameters of 62 eclipsing binary stars using the All Sky Automated Survey-3 data – I. MNRAS, 412, 1787. 
[19] Stetson, P. B. (1987) DAOPHOT - A computer program for crowded-field stellar photometry. Publications of the Astronomical Society of the Pacific, 99, 191. 
[20] Zhang, X. -B., Deng, L. -C., Xin, Y., & Zhou, X. (2003) Searching for Variable Stars in the Field of NGC 7789. Chinese Journal of Astronomy and Astrophysics, 3, 151
[21] Kwee, K. K., & van Woerden, H. (1956) A method for computing accurately the epoch of minimum of an eclipsing variable. Bulletin of the Astronomical Institutes of the Netherlands, 12, 327. 
[22] Wang. K, X. B. Zhang, Deng, L. C., et al. (2015) Flip-flop Activity on the W UMa-type Binary System HH Uma. The Astrophysical Journal, 805, 22. 
[23] Wilson, R. E., & Devinney, E. J. (1971) Realization of Accurate Close-Binary Light Curves: Application to MR Cygni. The Astrophysical Journal, 166, 605. 
[24] Wilson, R. E. (1979) Eccentric orbit generalization and simultaneous solution of binary star light and velocity curves. The Astrophysical Journal, 234, 1054. 
[25] Wilson, R. E. (1990) Accuracy and efficiency in the binary star reflection effect. The Astrophysical Journal, 356, 613. 
[26] Kallrath, J., Milone, E. F., Terrell, D., & Young, A. T. (1998) Recent Improvements to a Version of the Wilson-Devinney Program. APJ, 508, 308. 
[27] van Hamme, W. (1993) New limb-darkening coefficients for modeling binary star light curves. The Astronomical Journal, 106, 2096. 
[28] Lucy, L. B. (1967) Gravity-Darkening for Stars with Convective Envelopes. ZA, 65, 89. 
[29] Rucin´ski, S. M. (1969) The Proximity Effects in Close Binary Systems. II. The Bolometric Reflection Effect for Stars with Deep Convective Envelopes.  Acta Astronomica, 19, 245. 
[30] Cutri, R. M., Skrutskie, M. F., van Dyk, S., et al. (2003) VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003. VizieR Online Data Catalog, 2246, 0. 

Subscription
E-Mail Alert
Most popular papers
Call for Special Issue
Publication Ethics & OA Statement
Plagiarism Policy
Contact Us
Downloads: 13763
Visits: 261444

Sponsors, Associates, and Links

All published work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright © 2016 - 2031 Clausius Scientific Press Inc. All Rights Reserved.