التفاصيل البيبلوغرافية
| العنوان: |
The ZTF Source Classification Project. III. A Catalog of Variable Sources |
| المؤلفون: |
Healy, Brian F., Coughlin, Michael W., Mahabal, Ashish A., Jegou du Laz, Theophile, Drake, Andrew, Graham, Matthew J., Hillenbrand, Lynne A., van Roestel, Jan, Szkody, Paula, Zielske, LeighAnna, Guiga, Mohammed, Hassan, Muhammad Yusuf, Hughes, Jill L., Nir, Guy, Parikh, Saagar, Park, Sungmin, Purohit, Palak, Rebbapragada, Umaa, Reed, Draco, Warshofsky, Daniel, Wold, Avery, Bloom, Joshua S., Masci, Frank J., Riddle, Reed, Smith, Roger |
| المصدر: |
Astrophysical Journal Supplement Series, 272(1), 14, (2024-05) |
| بيانات النشر: |
American Astronomical Society |
| سنة النشر: |
2024 |
| المجموعة: |
Caltech Authors (California Institute of Technology) |
| الوصف: |
The classification of variable objects provides insight into a wide variety of astrophysics ranging from stellar interiors to galactic nuclei. The Zwicky Transient Facility (ZTF) provides time-series observations that record the variability of more than a billion sources. The scale of these data necessitates automated approaches to make a thorough analysis. Building on previous work, this paper reports the results of the ZTF Source Classification Project (SCoPe), which trains neural network and XGBoost (XGB) machine-learning (ML) algorithms to perform dichotomous classification of variable ZTF sources using a manually constructed training set containing 170,632 light curves. We find that several classifiers achieve high precision and recall scores, suggesting the reliability of their predictions for 209,991,147 light curves across 77 ZTF fields. We also identify the most important features for XGB classification and compare the performance of the two ML algorithms, finding a pattern of higher precision among XGB classifiers. The resulting classification catalog is available to the public, and the software developed for SCoPe is open source and adaptable to future time-domain surveys. ; © 2024. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of theCreative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. ; We are grateful to the referee for providing helpful comments that strengthened the paper. B.F.H. and M.W.C. acknowledge support from the National Science Foundation with grant Nos. PHY-2308862 and PHY-2117997. This work used Expanse at the San Diego Supercomputer Cluster through allocation AST200029, "Towards a complete catalog of variable sources to support efficient searches for compact binary mergers and their products," from the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS) ... |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| تدمد: |
1538-4365 |
| العلاقة: |
https://doi.org/10.3847/1538-4365/ad33c6Test; oai:authors.library.caltech.edu:pxafe-wq291 |
| DOI: |
10.3847/1538-4365/ad33c6 |
| الإتاحة: |
https://doi.org/10.3847/1538-4365/ad33c6Test |
| حقوق: |
info:eu-repo/semantics/openAccess ; Creative Commons Attribution 4.0 International ; https://creativecommons.org/licenses/by/4.0/legalcodeTest |
| رقم الانضمام: |
edsbas.D65CF28 |
| قاعدة البيانات: |
BASE |
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