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Estimating the metallicity of star-forming early-type galaxies
Wu, Yu-Zhong; Zhang, Wei
2021-05-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume503Issue:2Pages:2340-2348
AbstractWe derive data for 4615 star-forming early-type galaxies (ETGs), which come from a cross-match of the Galaxy Zoo and the catalogue of the Max Planck Institute for Astrophysics-Johns Hopkins University (MPA-JHU) emission-line measurements for the Sloan Digital Sky Survey Data Release 7. Our sample is distributed mainly at -0.7 < log(SFR/(M-circle dot yr(-1))) < 1.2, and the median value of our star formation rates (SFRs) is slightly higher than that shown in Davis & Young. We show that there is a significant trend of lower/higher stellar mass ETGs having lower/higher SFRs, and we obtain our sample best fit of log(SFR/(M(circle dot)yr(-1))) = (0.74 +/- 0.01)log(M-*/M-circle dot) - (7.64 +/- 0.10). We find the same slope as found by Cano-Diaz et al. In our star-forming ETG sample, we demonstrate clearly the correlation of the stellar mass-metallicity (MZ) relation. We find that higher metallicity measurements may be introduced by the diffuse ionized gas, when the D16, Sanch18 and Sander18 indicators are used to calibrate the metallicity of ETGs. We show the relations between the SFR and 12+log(O/H) with different metallicity estimators, and we suggest that their correlations may be a consequence of the SFR-stellar mass and MZ relations in ETGs.
Keywordgalaxies: abundances galaxies: elliptical and lenticular cD galaxies: evolution
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1093/mnras/stab512
WOS KeywordLUMINOSITY FUNCTION ; RED SEQUENCE ; STELLAR ; I. ; CALIFA ; ABUNDANCES ; EVOLUTION ; COMBO-17 ; DISKS
Language英语
Funding ProjectNational Natural Science Foundation of China[12090041] ; National Natural Science Foundation of China[12090040]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000648999700053
PublisherOXFORD UNIV PRESS
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77861
Collection中国科学院国家天文台
Corresponding AuthorWu, Yu-Zhong
AffiliationNatl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yu-Zhong,Zhang, Wei. Estimating the metallicity of star-forming early-type galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,503(2):2340-2348.
APA Wu, Yu-Zhong,&Zhang, Wei.(2021).Estimating the metallicity of star-forming early-type galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,503(2),2340-2348.
MLA Wu, Yu-Zhong,et al."Estimating the metallicity of star-forming early-type galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 503.2(2021):2340-2348.
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