4 papers
Photometric metallicity of Galactic RR Lyrae stars in the Gaia DR3 era
Mahiguhappriya Prakash, Susmita Das, Harinder P. Singh +1
We present a new, calibrated -band relationship between pulsation period , Fourier parameter , and metallicity [Fe/H] for galactic RR Lyrae stars from the Gaia surve…
A Multiband Photometric Study of RR Lyrae Stars in M53 (NGC 5024)
Shantanu A. Gaur, Nitesh Kumar, Anupam Bhardwaj +1
We present a multiband (UBVRI) time-series photometric study of RR Lyrae (RRL) stars in the globular cluster Messier 53 (NGC 5024) to refine their pulsation properties and determin…
Extraction of Physical Parameters of RRab Variables using Neural Network based Interpolator
Nitesh Kumar, Harinder P. Singh, Oleg Malkov +4
Determining the physical parameters of pulsating variable stars such as RR Lyrae is essential for understanding their internal structure, pulsation mechanisms, and evolutionary sta…
Physical Parameters of Stars in NGC 6397 Using ANN-Based Interpolation and Full Spectrum Fitting
Nitesh Kumar, Philippe Prugniel, Harinder P. Singh
Stellar spectral interpolation is critical technique employed by fitting software to derive the physical parameters of stars. This approach is necessary because on-the-go generatio…