Quasar candidate selection and redshift estimation using J-PLUS DR3 data Article Swipe
Xing-Yu Yang
,
Changhua Li
,
Yanxia Zhang
,
Chenzhou Cui
,
Ji Li
,
Jingyi Zhang
,
S. L. Wei
,
Chao Tang
,
Xue-Bing Wu
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1093/mnras/staf1427
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1093/mnras/staf1427
A comprehensive and high-purity quasar candidate catalogue with precise redshift measurements is crucial for advancing quasar research and cosmology. In the era of extensive sky surveys, the efficient identification of quasars from large-scale data sets has become a significant challenge in modern astronomy. By cross-matching the J-PLUS DR3 data set with unWISE and numerous spectroscopic data sets with accurate classifications, we compiled a known sample of 740 562 sources, including 338 456 stars, 320 606 galaxies, and 81 500 quasars. Subsequently, we developed several classification models employing XGBoost, CatBoost, and deep learning techniques. Through optimization of feature selection and hyperparameter tuning for each model, we derived an optimal classification model. This model achieved an accuracy of 99 per cent, with the Precision and Recall for quasar detection reaching 98.20 per cent and 99.39 per cent, respectively. In parallel, we utilized the known quasar sample to train an optimal model for redshift estimation, achieving a mean squared error of 0.139. Finally, combining the optimal classification and regression models, we designed an efficient workflow for quasar candidate selection and redshift estimation. This process resulted in the identification of over 3 million quasar candidates with photometric redshifts from the J-PLUS DR3 data set. These candidates provide an invaluable input catalogue for subsequent observations by large-scale spectroscopic surveys, such as LAMOST, SDSS, DESI, or other ongoing efforts in this field.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1093/mnras/staf1427
- https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/staf1427/64149405/staf1427.pdf
- OA Status
- gold
- References
- 82
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4413779815
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4413779815Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1093/mnras/staf1427Digital Object Identifier
- Title
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Quasar candidate selection and redshift estimation using J-PLUS DR3 dataWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-08-28Full publication date if available
- Authors
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Xing-Yu Yang, Changhua Li, Yanxia Zhang, Chenzhou Cui, Ji Li, Jingyi Zhang, S. L. Wei, Chao Tang, Xue-Bing WuList of authors in order
- Landing page
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https://doi.org/10.1093/mnras/staf1427Publisher landing page
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https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/staf1427/64149405/staf1427.pdfDirect link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/staf1427/64149405/staf1427.pdfDirect OA link when available
- Concepts
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Physics, Quasar, Redshift, Astrophysics, Selection (genetic algorithm), Astronomy, Red shift, Galaxy, Artificial intelligence, Computer scienceTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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| cited_by_percentile_year | |
| countries_distinct_count | 2 |
| institutions_distinct_count | 9 |
| citation_normalized_percentile.value | 0.2676044 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |