论文标题
在超级表板调查中，低表面亮度星系的性质
The Nature of Low Surface Brightness Galaxies in the Hyper Suprime-Cam Survey
论文作者
论文摘要
我们介绍了在Hyper Soprime-Cam战略调查计划的前200次$^2 $中确定的大型低表面亮度（LSB）星系的大量样本的统计红移分布。通过与NASA-SDSS地图集的互相关，我们发现大多数对象位于z <0.15或〜500 mpc之内，产生的质量范围为$ m _*$〜$〜$ 10^7-10^9 $ m_sun，大小范围和$ r _ {\ rm _ {\ rm {fef，g}} $ 〜1-8 kpc。我们发现距离分布在100 MPC之内的峰值，大部分属于已知质量大小关系的〜$ 10^7 $ M_SUN星系。红移分布中也有一个尾巴，即Z〜0.15，其中包括更大的尺寸范围内的较大端（$ m _*= 10^8-10^9 $ m_sun）星系。我们看到暂定的证据表明，在高质量端（$ m_*> 10^8 $ m_sun），LSB星系不会形成高表面亮度星系的质量大小关系的平滑扩展，也许表明LSB星系在其形成路径上是不同的。
We present the statistical redshift distribution of a large sample of low surface brightness (LSB) galaxies identified in the first 200 deg$^2$ of the Hyper Suprime-Cam Strategic Survey Program. Through cross-correlation with the NASA-SDSS Atlas, we find that the majority of objects lie within z<0.15 or ~ 500 Mpc, yielding a mass range of $M_*$ ~ $10^7-10^9$ M_sun and size range of $r_{\rm{eff,g}}$ ~ 1-8 kpc. We find a peak in the distance distribution within 100 Mpc, corresponding mostly to ~ $10^7$ M_sun galaxies that fall on the known mass-size relation. There is also a tail in the redshift distribution out to z~0.15, comprising more massive ($M_*=10^8-10^9$ M_sun) galaxies at the larger end of our size range. We see tentative evidence that at the higher-mass end ($M_* > 10^8$ M_sun) the LSB galaxies do not form a smooth extension of the mass-size relation of higher surface brightness galaxies, perhaps suggesting that the LSB galaxy population is distinct in its formation path.
