期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 756, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/756/2/L31
关键词
galaxies: abundances; galaxies: fundamental parameters; galaxies: ISM; galaxies: stellar content; techniques: imaging spectroscopy
资金
- Mexican National Council for Science and Technology (CONACYT) under the program Estancias Postdoctorales y Sabaticas al Extranjero para la Consolidacion de Grupos de Investigacion
- Spanish Plan Nacional de Astronomia program [AYA2010-21887 C04-03]
We demonstrate the existence of a local mass, metallicity, star formation relation using spatially resolved optical spectroscopy of H II regions in the local universe. One of the projections of this distribution-the local mass-metallicity relation-extends over a wide range in this parameter space: three orders of magnitude in mass and a factor of eight in metallicity. We explain the new relation as the combined effect of the differential distributions of mass and metallicity in the disks of galaxies, and a selective star formation efficiency. We use this local relation to reproduce-with a noticeable agreement-the mass-metallicity relation seen in galaxies, and conclude that the latter is a scale-up integrated effect of a local relation, supporting the inside-out growth and downsizing scenarios of galaxy evolution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据