Author(s)

Yiding Zhang ¹

Affiliation(s)

¹ Nanjing Foreign Language School, Nanjing, Jiangsu, China

Corresponding Author

Yiding Zhang

ABSTRACT

This study presents photometric observations of the high-amplitude δ Scuti star V2455 Cyg, conducted using the 432mm Cassegrain telescope (f/6.8, 2939 mm focal length) at NanShan station of Astronomical Observatories in Ürümqi, China, equipped with the QHY4040Pro scientific CMOS camera. The observations were performed to characterize the star's pulsation properties. Data processing involved standard photometric reduction techniques operated on MaxIm DL 6, and further analysis is performed on Period04 to obtain smoothed light curves and phase diagrams. Our analysis identified the fundamental radial mode of V2455 Cyg with a period of approximately 0.087 days and a peak-to-peak amplitude of 0.304 mag in r-band, 0.443 in g-band, and 0.233 in i-band. The results are consistent with the star's classification as a high-amplitude δ Scuti star, suggesting a stable single-mode pulsation, supporting its classification as a Population I HADS, with potential implications for asteroseismology and variable star catalogs.

KEYWORDS

δ Scuti Star, V2455 Cyg, Multi-Band Photometry, Pulsation Period, Amplitude, Light Curve

CITE THIS PAPER

Yiding Zhang, Multi-Band Photometric Study of the δ Scuti Star V2455 Cyg. Modern Physical Chemistry Research (2025) Vol. 5: 78-85. DOI: http://dx.doi.org/10.23977/mpcr.2025.050110.

REFERENCES

[1] Yang, T.-Z., et al. (2018). Pulsations of the High-Amplitude δ Scuti star YZ Bootis. Research in Astronomy and Astrophysics, 18(5), 056. doi:10.1088/1674-4527/18/5/2
[2] Breger, M., & Pamyatnykh, A. A. (1998). Asteroseismology of the δ Scuti star YZ Boo. Astronomy & Astrophysics, 332, 958–966.
[3] McNamara, D. H. (2000). High-amplitude δ Scuti stars. In Delta Scuti and Related Stars, ASP Conference Series, 210, 373–380.
[4] SIMBAD Astronomical Database. (2023). V2455 Cyg. Retrieved from http://simbad.u-strasbg.fr/simbad/
[5] AAVSO Variable Star Database. (2023). V2455 Cyg. Retrieved from https://www.aavso.org/vsx/
[6] QHYCCD. (2021). QHY4040Pro Series. Retrieved from https://www.qhyccd.com
[7] Deep Space Products. (2023). QHY4040 Pro I BSI Scientific Cooled CMOS Camera. Retrieved from https://www. deepspaceproducts.com
[8] Percy, J. R. (2007). Understanding Variable Stars. Cambridge University Press.

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