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arXiv 2102.13121astro-ph.GA
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miniJPAS巡天:用J-PAS光度系统对星系群的识别和表征

The miniJPAS survey: Identification and characterization of galaxy populations with the J-PAS photometric system

R. M. González Delgado, L. A. Díaz-García, A. de Amorim, G. Bruzual, R. Cid Fernandes, E. Pérez, S. Bonoli, A. J. Cenarro, P. R. T. Coelho, A. Cortesi, R. Garcí… 展开作者

R. M. González Delgado, L. A. Díaz-García, A. de Amorim, G. Bruzual, R. Cid Fernandes, E. Pérez, S. Bonoli, A. J. Cenarro, P. R. T. Coelho, A. Cortesi, R. García-Benito, R. López Fernández, G. Martínez-Solaeche, J. E. Rodríguez-Martín, G. Magris, A. Mejía-Narvaez, D. Brito-Silva, L. R. Abramo, J. M. Diego, R. A. Dupke, A. Hernán-Caballero, C. Hernández-Monteagudo, C. López-Sanjuan, A. Marín-Franch, V. Marra, M. Moles, A. Montero-Dorta, C. Queiroz, L. Sodré, J. Varela, H. Vázquez Ramió, J. M. Vílchez, P. O. Baqui, N. Benítez, D. Cristóbal-Hornillos, A. Ederoclite, C. Mendes de Oliveira, T. Civera, D. Muniesa, K. Taylor, E. Tempel, the J-PAS collaboration

摘要:

J-PAS将很快开始使用其独特的56个滤镜(R $\sim$ 60)对北半球8000度2的天空进行成像。之前,我们用一台带有所有J-PAS滤光片的临时相机在AEGIS视场上观察到1 deg 2。有了这些数据(miniJPAS),我们的目标是证明J-PAS的科学潜力,以确定和表征星系群,目标是在宇宙时间内进行星系演化研究。几个SED拟合代码被用来约束一个完整的通量有限样本(rSDSS <= 22.5 AB)的miniJPAS星系,延伸到z = 1的恒星星族的属性。我们发现一致的结果来自不同的代码,独立的星系光谱类型或红移的星系属性。对于SNR>=10的星系,我们估计,J-PAS测光系统允许推导出恒星星族的性能与精度是相当的光谱调查类似的SNR。通过使用尘埃校正的(u-r)色质量图,一个强大的代理,以表征星系的人口,我们发现,红色和蓝色的星系的比例随宇宙时间的演变,与红色星系是$\sim$ 38%和$\sim$ 18%的总人口在z = 0.1和z = 0.5,分别。在所有的红移中,更大质量的星系属于红色序列,这些星系通常比蓝色星云中的星系更古老,更富含金属。我们的研究结果证实,与J-PAS数据,我们将能够分析大样本的星系z $\sim$ 1,与星系的恒星质量以上的log(M $_*$ /M $_{\odot}$)$\sim$ 8.9,9.5,和9.9在z = 0.3,0.5,和0.7,分别。在z $\sim$ = 0.1,log(M $_*$ /M $_{\odot}$)> 8.3的条件下,选取了一个完整的子样本星系,其SFH将恒星形成率密度的宇宙演化限制到z $\sim$ = 3,这与宇宙学巡天的结果非常一致。

英文摘要:

J-PAS will soon start imaging 8000 deg2 of the northern sky with its unique set of 56 filters (R $\sim$ 60). Before, we observed 1 deg2 on the AEGIS field with an interim camera with all the J-PAS filters. With this data (miniJPAS), we aim at proving the scientific potential of J-PAS to identify and characterize the galaxy populations with the goal of performing galaxy evolution studies across cosmic time. Several SED-fitting codes are used to constrain the stellar population properties of a complete flux-limited sample (rSDSS <= 22.5 AB) of miniJPAS galaxies that extends up to z = 1. We find consistent results on the galaxy properties derived from the different codes, independently of the galaxy spectral-type or redshift. For galaxies with SNR>=10, we estimate that the J-PAS photometric system allows to derive stellar population properties with a precision that is equivalent to that obtained with spectroscopic surveys of similar SNR. By using the dust-corrected (u-r) colour-mass diagram, a powerful proxy to characterize galaxy populations, we find that the fraction of red and blue galaxies evolves with cosmic time, with red galaxies being $\sim$ 38% and $\sim$ 18% of the whole population at z = 0.1 and z = 0.5, respectively. At all redshifts, the more massive galaxies belong to the red sequence and these galaxies are typically older and more metal rich than their counterparts in the blue cloud. Our results confirm that with J-PAS data we will be able to analyze large samples of galaxies up to z $\sim$ 1, with galaxy stellar masses above of log(M$_*$/M$_{\odot}$) $\sim$ 8.9, 9.5, and 9.9 at z = 0.3, 0.5, and 0.7, respectively. The SFH of a complete sub-sample of galaxies selected at z $\sim$ 0.1 with log(M$_*$/M$_{\odot}$) > 8.3 constrain the cosmic evolution of the star formation rate density up to z $\sim$ 3 in good agreement with results from cosmological surveys.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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