Ding, Weiyu and Zou, Hu and Kong, Xu and Gao, Yulong and Li, Fujia and Zhang, Hongxin and Wang, Jiali and Song, Jie and Sui, Jipeng and Nie, Jundan and Xue, Suijian and Guo, Weijian and Yao, Yao and Zhou, Zhimin (2023) Strong [O iii] λ5007 Compact Galaxies Identified from SDSS DR16 and Their Scaling Relations. The Astronomical Journal, 166 (3). p. 133. ISSN 0004-6256
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Abstract
Green-pea galaxies are a special class of star-forming compact galaxies with strong [O iii]λ5007 and considered as analogs of high-redshift Lyα-emitting galaxies and potential sources for cosmic reionization. In this paper, we identify 76 strong [O iii]λ5007 compact galaxies at z < 0.35 from DR16 of the Sloan Digital Sky Survey. These galaxies present relatively low stellar mass, high star-formation rate, and low metallicity. Both the star-forming main-sequence (SFMS) relation and mass–metallicity relation (MZR) are investigated and compared with green-pea and blueberry galaxies collected from literature. It is found that our strong [O iii] λ5007 compact galaxies share common properties with those compact galaxies with extreme star formation and show distinct scaling relations in respect to those of normal star-forming galaxies at the same redshift. The slope of SFMS is higher, indicates that strong [O iii]λ5007 compact galaxies might grow faster in stellar mass. The lower MZR implies that they may be less chemically evolved and hence on the early stage of star formation. A further environmental investigation confirms that they inhabit relatively low-density regions. Future large-scale spectroscopic surveys will provide more details on their physical origin and evolution.
Item Type: | Article |
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Subjects: | Eprint Open STM Press > Physics and Astronomy |
Depositing User: | Unnamed user with email admin@eprint.openstmpress.com |
Date Deposited: | 17 Nov 2023 04:22 |
Last Modified: | 17 Nov 2023 04:22 |
URI: | http://library.go4manusub.com/id/eprint/1653 |