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  The mass–metallicity relation at z ~ 0.8: Redshift evolution and parameter dependency

Huang, C., Zou, H., Kong, X., Comparat, J., Lin, Z., Gao, Y., et al. (2019). The mass–metallicity relation at z ~ 0.8: Redshift evolution and parameter dependency. The Astrophysical Journal, 886(1): 31. doi:10.3847/1538-4357/ab4902.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-79D7-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-79D8-0
Genre: Journal Article

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 Creators:
Huang, Chi, Author
Zou, Hu, Author
Kong, Xu, Author
Comparat, Johan1, Author              
Lin, Zesen, Author
Gao, Yulong, Author
Liang, Zhixiong, Author
Delubac, Timothee, Author
Raichoor, Anand, Author
Kneib, Jean-Paul, Author
Schneider, Donald P., Author
Zhou, Xu, Author
Yuan, Qirong, Author
Bershady, Matthew A., Author
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: The spectra of emission-line galaxies from the extended Baryon Oscillation Spectroscopic Survey of the Sloan Digit Sky Survey (SDSS) are used to study the mass–metallicity relation (MZR) at z ~ 0.8. The selected sample contains about 180,000 massive star-forming galaxies with 0.6 < z < 1.05 and 9<log(M<sub>⋆</sub>/M<sub>⊙</sub>)<12. The spectra are stacked in bins of different parameters including redshift, stellar mass, star formation rate (SFR), specific star formation rate (sSFR), half-light radius, mass density, and optical color. The average MZR at z ~ 0.83 has a downward evolution in the MZR from the local to high-redshift universe, which is consistent with previous works. At a specified stellar mass, galaxies with higher SFR/sSFR and larger half-light radius have systematically lower metallicity. This behavior is reversed for galaxies with larger mass density and optical color. Among the above physical parameters, the MZR has the most significant dependency on SFR. Our galaxy sample at 0.6 < z < 1.05 approximately follows the fundamental metallicity relation (FMR) in the local universe, although the sample inhomogeneity and incompleteness might have an effect on our MZR and FMR.

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 Dates: 2019-11-15
 Publication Status: Published online
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 Identifiers: DOI: 10.3847/1538-4357/ab4902
Other: LOCALID: 3186717
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Title: The Astrophysical Journal
Source Genre: Journal
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Publ. Info: Bristol; Vienna : IOP Publishing; IAEA
Pages: - Volume / Issue: 886 (1) Sequence Number: 31 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3