4.7 Article

What Determines the Local Metallicity of Galaxies: Global Stellar Mass, Local Stellar Mass Surface Density, or Star Formation Rate?

期刊

ASTROPHYSICAL JOURNAL
卷 868, 期 2, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aae9f1

关键词

galaxies: abundances; galaxies: evolution; galaxies: starburst; galaxies: star formation

资金

  1. National Key RAMP
  2. D Program of China [2015CB857004, 2016YFA0400702, 2017YFA0402600]
  3. National Natural Science Foundation of China (NSFC) [11320101002, 11421303, 11433005]
  4. Youth Innovation Fund by the University of Science and Technology of China [WK2030220019]
  5. China Postdoctoral Science Foundation [BH2030000040]
  6. National Thousand Young Talents Program of China
  7. Alfred P. Sloan Foundation
  8. U.S. Department of Energy Office of Science
  9. Center for High-Performance Computing at the University of Utah
  10. Brazilian Participation Group
  11. Carnegie Institution for Science
  12. Chilean Participation Group
  13. French Participation Group
  14. Harvard-Smithsonian Center for Astrophysics
  15. Instituto de Astrofisica de Canarias
  16. Johns Hopkins University
  17. Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo
  18. Lawrence Berkeley National Laboratory
  19. Leibniz Institut fur Astrophysik Potsdam (AIP)
  20. Max-Planck-Institut fur Astronomie (MPIA Heidelberg)
  21. Max-Planck-Institut fur Astrophysik (MPA Garching)
  22. Max-Planck-Institut fur Extraterrestrische Physik (MPE)
  23. National Astronomical Observatories of China
  24. New Mexico State University
  25. New York University
  26. University of Notre Dame
  27. Observatrio Nacional/MCTI
  28. Pennsylvania State University
  29. Shanghai Astronomical Observatory
  30. United Kingdom Participation Group
  31. Universidad Nacional Autonoma de Mexico
  32. University of Arizona
  33. University of Colorado Boulder
  34. University of Oxford
  35. University of Portsmouth
  36. University of Utah
  37. University of Virginia
  38. University of Washington
  39. University of Wisconsin
  40. Vanderbilt University
  41. Yale University
  42. Ohio State University

向作者/读者索取更多资源

Metallicity and its relationship with other galactic properties is a fundamental probe of the evolution of galaxies. In this work, we select about 750,000 star-forming spatial pixels from 1122 blue galaxies in the Mapping Nearby Galaxies at Apache Point Observatory survey to investigate the global stellar mass-local stellar mass surface density-gas-phase metallicity (M-*-Sigma(*)-Z) relation. At a fixed M*, the metallicity increases steeply with increasing Sigma(*). Similarly, at a fixed Sigma(*), the metallicity increases strongly with increasing M-* at the low-mass end, while this trend becomes less obvious at the high-mass end. We find the metallicity to be more strongly correlated to Sigma(*) than to M-*. Furthermore, we construct a tight (0.07 dex scatter) M-*-Sigma(*)-Z relation, which reduces the scatter in the Sigma(*)-Z relation by about 30% for galaxies with 7.8.

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