首页> 外文会议>Symposium of the International Astronomical Union >Gas accretion history of galaxies at z ~ 0 -- 2: Comparison of the observational data of molecular gas with the mass evolution model of galaxies
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Gas accretion history of galaxies at z ~ 0 -- 2: Comparison of the observational data of molecular gas with the mass evolution model of galaxies

机译:Z〜0 - 2的星系的气体吸收历史:分子气体的观察数据与星系的大规模进化模型的比较

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We found stellar mass-dependent evolution of galactic molecular gas fractions (f_(mol) = {formula}, M_(mol): molecular gas mass, M_★: stellar mass) where less massive galaxies have decreased f_(mol) from z = 1 whereas massive galaxies have already had low f_(mol) until z = 1. Comparison of the observed quantities (f_(mol), optical and near infra-red [NIR] colors, specific star formation rate [sSFR = SFR/M_★]) with mass evolution models suggests that less massive galaxies had high f_(mol) at z = 1 thanks to recent gas accretion.
机译:我们发现半乳液分子气体馏分的恒星依赖性演化(F_(mol)= {式},m_(mol):Molecular气体质量,M_★:恒星质量),其中较少的大规模星系从z =(mol)降低z = 1而大规模的星系已经具有低f_(mol)直至z = 1.观察量的比较(F_(mol),光学和近红外线[nir]颜色,特定的星形成速率[SSFR = SFR / M_★ ])由于近期气体吸收,群众进化模型表明,Z = 1的大规模星系较低的F_(mol)。

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