论文标题
所有红移均与H = 1个随机星形成历史一致
UV Slopes At All Redshifts Are Consistent with H=1 Stochastic Star Formation Histories
论文作者
论文摘要
多次调查支持将星系增长描述为一个随机过程，其相关性在一系列由参数，$ h $，经验和理论上限制为几乎统一的时间尺度上。在这里，我们表明，紫外线的分布（$β$）来自理论$ h = 1 $ star构造历史记录（SFHS）的合奏，这与所有Redshifts $ z \ le 16 $都一致。在$ z = 0 $时，中值$ \langleβ_{h = 1} \ rangle = -2.27 $与本地starbursts \ citep {meurer1999}的规范$β_0= -2.23 $非常吻合。 JWST数据以$ 4 \ lyssim z \ Lessim16 $ 16 $，跨越模型分布的第二个百分位数。 $ -2.8 \leβ\ le -2.5 $的值在早期星系中应该是常见的，而无需参考异国情调的恒星种群 - 仅由$ h = 1 $的零假设引起。未来的数据应考虑到这一事实。
Multiple investigations support describing galaxy growth as a stochastic process with correlations over a range of timescales governed by a parameter, $H$, empirically and theoretically constrained to be near unity. Here, we show that the distribution of UV-slopes, $β$, derived from an ensemble of theoretical $H=1$ star formation histories (SFHs) is consistent with data at all redshifts $z\le 16$. At $z=0$, the median value $\langleβ_{H=1}\rangle=-2.27$ agrees well with the canonical $β_0=-2.23$ for local starbursts \citep{meurer1999}. At $4\lesssim z\lesssim16$, JWST data span the model distribution's 2nd to 98th percentiles. Values of $-2.8\le β\le -2.5$ should be common in early galaxies without reference to exotic stellar populations -- arising solely from a null hypothesis of $H=1$ for the underlying diversity of galaxy growth histories. Future data should be interpreted with this fact in mind.
