Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation models Article Swipe
Nitesh Kumar
,
Anupam Bhardwaj
,
Harinder P. Singh
,
Susmita Das
,
M. Marconi
,
Shashi M. Kanbur
,
P. Prugniel
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1093/mnras/stad937
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1093/mnras/stad937
We present a new technique to generate the light curves of RRab stars in different photometric bands (I and V bands) using artificial neural networks (ANN). A pre-computed grid of models was used to train the ANN, and the architecture was tuned using the I-band light curves. The best-performing network was adopted to make the final interpolators in the I and V bands. The trained interpolators were used to predict the light curve of RRab stars in the Magellanic Clouds, and the distances to the Large Magellanic Cloud and Small Magellanic Cloud were determined based on the reddening independent Wesenheit index. The estimated distances are in good agreement with the literature. The comparison of the predicted and observed amplitudes, and Fourier amplitude ratios showed good agreement, but the Fourier phase parameters displayed a few discrepancies. To showcase the utility of the interpolators, the light curve of the RRab star EZ Cnc was generated and compared with the observed light curve from the Kepler mission. The reported distance to EZ Cnc was found to be in excellent agreement with the updated parallax measurement from Gaia EDR3. Our ANN interpolator provides a fast and efficient technique to generate a smooth grid of model light curves for a wide range of physical parameters, which is computationally expensive and time-consuming using stellar pulsation codes.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1093/mnras/stad937
- OA Status
- green
- Cited By
- 4
- References
- 117
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4362515188
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4362515188Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1093/mnras/stad937Digital Object Identifier
- Title
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Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation modelsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-03-29Full publication date if available
- Authors
-
Nitesh Kumar, Anupam Bhardwaj, Harinder P. Singh, Susmita Das, M. Marconi, Shashi M. Kanbur, P. PrugnielList of authors in order
- Landing page
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https://doi.org/10.1093/mnras/stad937Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://hal.science/hal-05018818Direct OA link when available
- Concepts
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Light curve, Physics, Stars, RR Lyrae variable, Artificial neural network, Amplitude, Interpolation (computer graphics), Fourier transform, Astrophysics, Optics, Artificial intelligence, Computer science, Classical mechanics, Quantum mechanics, Globular cluster, Motion (physics)Top concepts (fields/topics) attached by OpenAlex
- Cited by
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4Total citation count in OpenAlex
- Citations by year (recent)
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2025: 2, 2024: 1, 2023: 1Per-year citation counts (last 5 years)
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117Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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