Mass-metallicity relation for local star-forming galaxies

	Mass-metallicity relation for local star-forming galaxies
	Wu, Yu-Zhong1,2 ; Zhang, Shuang-Nan 1,3; Zhao, Yong-Heng1,2 ; Zhang, Wei1,2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-04-11
卷号	457 期号:3 页码:2929-2935
关键词	galaxies: abundances galaxies: evolution galaxies: statistics
英文摘要	We investigate the evolution of the mass-metallicity (M-Z) relation with a large sample of 53 444 star-forming galaxies (SFGs) at 0.04 < z < 0.12, selected from the catalogue of Max-Planck-Institute for Astrophysics-John Hopkins University (MPA-JHU) emission-line measurements for the Sloan Digital Sky Survey Data Release 7. Regarding the sample of SFGs, we correct the observational bias and raise the aperture covering fractions to check the reliability of the metallicity evolution. (i) We show that the redshift evolution of the log (Ha) and log(([O III])) luminosities is displayed in our sample. (ii) We find the metallicity evolution of similar to 0.15 dex at log(M/M-circle dot) similar to 9.3 in SFGs at 0.04 < z < 0.12. (iii) After applying the luminosity thresholds of log (L-H alpha) > 41.0 and log(L-[OIII]) > 39.7, we find that the metallicity evolution is shown well, and that the evolution of the star formation rate (SFR) is still shown well under the latter luminosity threshold, but the evolution is not observed under the former. (iv) The evolution of the M-Z relation seems to disappear at about log(M/M-circle dot) > 10.0 after applying the luminosity threshold of log (LHa) > 41.0 or log(L-[O III]) > 39.7. (v) We find alpha = 0.09 and alpha = 0.07 in the equation, mu = logM* - alpha log(SFR), for log (L-H alpha) > 41.0 and log(L-[O III]) > 39.7 samples, respectively, and these imply that the evolution of theM-Z relation might have a weaker dependence on the SFR in our sample.
收录类别	SCI
语种	英语
WOS记录号	WOS:000373583900048
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5359]
专题	国家天文台_空间科学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yu-Zhong,Zhang, Shuang-Nan,Zhao, Yong-Heng,et al. Mass-metallicity relation for local star-forming galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,457(3):2929-2935.
APA	Wu, Yu-Zhong,Zhang, Shuang-Nan,Zhao, Yong-Heng,&Zhang, Wei.(2016).Mass-metallicity relation for local star-forming galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,457(3),2929-2935.
MLA	Wu, Yu-Zhong,et al."Mass-metallicity relation for local star-forming galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 457.3(2016):2929-2935.