论文标题
JWST揭示了令人惊叹的大量，巨大的星系
On the stunning abundance of super-early, massive galaxies revealed by JWST
论文作者
论文摘要
最早的JWST观察表明，在明亮端（$ M _ {\ m _ {\ rm uv} \ rm uv} \ odot $）的星系中，大量（$ z> 10 $），巨大（$ m _*\大约10^9 \，m_ \ odot $）星系（\ \ rm uv} \ the Ultoraviolet Luminsusity Funical（uv lf）。我们提出了一个最小的物理模型，该模型在$ z = 10-14 $的情况下解释了观察到的星系丰度。该模型主要结合了（a）光环质量函数，（b）（b）遮挡的星形形成部分处方与阿尔玛叛军尘土飞扬的星系调查的发现一致。它已经在著名的UV LFS上成功测试了$ z = 7 $。从$ z = 7 $到$ z \约14美元的LF明亮结束的弱进化源于减少灰尘衰减之间的阴谋，使星系更明亮，这几乎完全弥补了宿主光晕的短缺。该模型还预测，$ z> 11 $的星系应包含可忽略的灰尘。我们推测，在银河系堆积的第一阶段，灰尘本可以有效地弹出。
The earliest JWST observations have revealed an unexpected abundance of super-early ($z>10$), massive ($M_*\approx 10^9\, M_\odot$) galaxies at the bright-end ($M_{\rm UV}\approx -21$) of the ultraviolet luminosity function (UV LF). We present a minimal physical model that explains the observed galaxy abundance at $z=10-14$. The model primarily combines (a) the halo mass function, with (b) an obscured star formation fraction prescription that is consistent with findings of the ALMA REBELS dusty galaxy survey. It has been successfully tested on well-known UV LFs up to $z=7$. The weak evolution from $z=7$ to $z\approx 14$ of the LF bright-end arises from a conspiracy between a decreasing dust attenuation, making galaxies brighter, that almost exactly compensates for the increasing shortage of their host halos. The model also predicts that galaxies at $z > 11$ should contain negligible amounts of dust. We speculate that dust could have been efficiently ejected during the very first phases of galaxy build-up.
