论文标题

Z〜0.25-1.5星系在各种环境中的缩放关系从魔术样品的形态分析中

Scaling relations of z~0.25-1.5 galaxies in various environments from the morpho-kinematic analysis of the MAGIC sample

论文作者

Mercier, W., Epinat, B., Contini, T., Abril-Melgarejo, V., Boogaard, L., Brinchmann, J., Finley, H., Krajnović, D., Michel-Dansac, L., Ventou, E., Bouché, N., Dumoulin, J., Pineda, Juan C. B.

论文摘要

星系的演变受许多物理过程的影响,这些过程可能会根据其环境而变化。我们将Hubble空间望远镜(HST)和多单位光谱探索器(MUSE)数据组合为0.25 <Z <1.5,以探测环境对尺寸质量关系,主序列(MS)和Tully-Fisher关系的影响。 我们在宇宙(Magic)调查中的Muse-Galaxy群体的各种环境中,在宇宙地区的各种环境中进行了593 [OII]发射器的形态模型。 HST F814W图像以凸起盘分解为建模,以估计其凸起盘比,有效半径和磁盘倾斜度。我们使用[OII] λλ3727,3729 Doublet从缪斯立方体提取电离气体运动图,并为它们建模为146 [OII]发射器的样本,其凸出和磁盘成分构成了从形态学和暗物质卤素限制的构成。 我们在尺寸质量关系上发现了0.03 dex的偏移,在田地和大结构子样本之间零点,n = 10的丰富度阈值在小结构和大型结构之间分开,而n = 20的0.06 dex。同样,我们在n = 10和0.15 dex的MS上发现0.1 DEX差异,n = 20。这些结果表明,相对于z = 0.7的场星系,大型结构中的星系较小14%,恒星形成率降低了1.3-1.5。最后,我们没有发现环境对TFR的任何影响,除非使用n = 20且偏移为0.04 dex。我们丢弃了最大结构的淬火效果,这将导致相反方向的偏移。我们发现,在Z = 0.7时,如果淬火影响结构中星系的质量预算,这些星系将对大约0.7-1.5 GYR产生影响。包括气体质量时,该结果成立,但是一旦我们包括了不对称的漂移校正,就会消失。

The evolution of galaxies is influenced by many physical processes which may vary depending on their environment. We combine Hubble Space Telescope (HST) and Multi-Unit Spectroscopic Explorer (MUSE) data of galaxies at 0.25<z<1.5 to probe the impact of environment on the size-mass relation, the Main Sequence (MS) and the Tully-Fisher relation (TFR). We perform a morpho-kinematic modelling of 593 [Oii] emitters in various environments in the COSMOS area from the MUSE-gAlaxy Groups In Cosmos (MAGIC) survey. The HST F814W images are modelled with a bulge-disk decomposition to estimate their bulge-disk ratio, effective radius and disk inclination. We use the [Oii]λλ3727, 3729 doublet to extract the ionised gas kinematic maps from the MUSE cubes, and we model them for a sample of 146 [Oii] emitters, with bulge and disk components constrained from morphology and a dark matter halo. We find an offset of 0.03 dex on the size-mass relation zero point between the field and the large structure subsamples, with a richness threshold of N=10 to separate between small and large structures, and of 0.06 dex with N=20. Similarly, we find a 0.1 dex difference on the MS with N=10 and 0.15 dex with N=20. These results suggest that galaxies in massive structures are smaller by 14% and have star formation rates reduced by a factor of 1.3-1.5 with respect to field galaxies at z=0.7. Finally, we do not find any impact of the environment on the TFR, except when using N=20 with an offset of 0.04 dex. We discard the effect of quenching for the largest structures that would lead to an offset in the opposite direction. We find that, at z=0.7, if quenching impacts the mass budget of galaxies in structures, these galaxies would have been affected quite recently, for roughly 0.7-1.5 Gyr. This result holds when including the gas mass, but vanishes once we include the asymmetric drift correction.

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