Academic Journal
An extended catalogue of galaxy morphology using deep learning in southern photometric local universe survey data release 3
| العنوان: | An extended catalogue of galaxy morphology using deep learning in southern photometric local universe survey data release 3 |
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| المؤلفون: | Bom, C R, Cortesi, A, Ribeiro, U, Dias, L O, Kelkar, K, Smith Castelli, A V, Santana-Silva, L, Lopes-Silva, V, Gonçalves, T S, Abramo, L R, Lima, E V R, Almeida-Fernandes, F, Espinosa, L, Li, L, Buzzo, M L, Mendes de Oliveira, C, Sodré, L, Ferrari, F, Alvarez-Candal, A, Grossi, M, Telles, E, Torres-Flores, S, Werner, S V, Kanaan, A, Ribeiro, T, Schoenell, W |
| المساهمون: | Fundação de Amparo à Pesquisa do Estado de São Paulo, São Paulo Research Foundation, CNPq, CAPES, FAPERJ, FINEP, FAPESP, University of São Paulo |
| المصدر: | Monthly Notices of the Royal Astronomical Society ; volume 528, issue 3, page 4188-4208 ; ISSN 0035-8711 1365-2966 |
| بيانات النشر: | Oxford University Press (OUP) |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Space and Planetary Science, Astronomy and Astrophysics |
| الوصف: | The morphological diversity of galaxies is a relevant probe of galaxy evolution and cosmological structure formation. However, in large sky surveys, even the morphological classification of galaxies into two classes, like late-type (LT) and early-type (ET), still represents a significant challenge. In this work, we present a Deep Learning (DL) based morphological catalogue built from images obtained by the Southern Photometric Local Universe Survey (S-PLUS) Data Release 3 (DR3). Our DL method achieves a purity rate of 98.5 per cent in accurately distinguishing between spiral, as part of the larger category of LT galaxies, and elliptical, belonging to ET galaxies. Additionally, we have implemented a secondary classifier that evaluates the quality of each galaxy stamp, which allows to select only high-quality images when studying properties of galaxies on the basis of their DL morphology. From our LT/ET catalogue of galaxies, we recover the expected colour–magnitude diagram in which LT galaxies display bluer colours than ET ones. Furthermore, we also investigate the clustering of galaxies based on their morphology, along with their relationship to the surrounding environment. As a result, we deliver a full morphological catalogue with 164 314 objects complete up to rpetro < 18, covering ∼1800 deg2, from which ∼55 000 are classified as high reliability, including a significant area of the Southern hemisphere that was not covered by previous morphology catalogues. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1093/mnras/stad3956 |
| DOI: | 10.1093/mnras/stad3956/54770836/stad3956.pdf |
| الاتاحة: | http://dx.doi.org/10.1093/mnras/stad3956 https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stad3956/54770836/stad3956.pdf https://academic.oup.com/mnras/article-pdf/528/3/4188/56629312/stad3956.pdf |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.A363C390 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/mnras/stad3956 |
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