论文标题
形态与环境在恒星形成率上的作用 - 宇宙中恒星质量关系从0 <z <3.5
Morphology & Environment's Role on the Star Formation Rate -- Stellar Mass Relation in COSMOS from 0 < z < 3.5
论文作者
论文摘要
我们研究了从0 <z <3.5的宇宙场中的恒星形成星系样本（通常称为“恒星形成主序列”）中的环境，形态和恒星形成率 - 恒星质量关系（通常称为“恒星形成主序列”）。我们使用公共套餐Magphys和Sed3Fit构建并构建了111,537个星系的恒星质量选择样品的FUV-FIR-FIR SED。根据最佳拟合参数估计，我们构建了星形形成率 - 恒星质量关系是红移，局部环境，NUVRJ颜色诊断和形态的函数。我们发现，从我们的颜色色和SSFR选择的星形形成的星系群（包括高恒星质量的营业）中得出的主要序列的形状不会在0 <z <3.5的任何红移时表现出环境依赖性。我们研究了形态在SFM的高质量端中的作用，以确定凸起生长是否促进了高质量转移。我们发现，恒星形成的星系经历了这种营业额无关，而与凸起的比率无关，从而加强了由于磁盘成分的特定恒星形成速率随着恒星质量而不是凸起的增长而造成的。
We investigate the relationship between environment, morphology, and the star formation rate -- stellar mass relation derived from a sample of star-forming galaxies (commonly referred to as the `star formation main sequence') in the COSMOS field from 0 < z < 3.5. We constructed and fit the FUV--FIR SEDs of our stellar mass-selected sample of 111,537 galaxies with stellar and dust emission models using the public packages MAGPHYS and SED3FIT. From the best fit parameter estimates, we construct the star formation rate -- stellar mass relation as a function of redshift, local environment, NUVrJ color diagnostics, and morphology. We find that the shape of the main sequence derived from our color-color and sSFR-selected star forming galaxy population, including the turnover at high stellar mass, does not exhibit an environmental dependence at any redshift from 0 < z < 3.5. We investigate the role of morphology in the high mass end of the SFMS to determine whether bulge growth is driving the high mass turnover. We find that star-forming galaxies experience this turnover independent of bulge-to-total ratio, strengthening the case that the turnover is due to the disk component's specific star formation rate evolving with stellar mass rather than bulge growth.
