RED NUGGETS AT HIGH REDSHIFT: STRUCTURAL EVOLUTION OF QUIESCENT GALAXIES OVER 10 Gyr OF COSMIC HISTORY
RED NUGGETS AT HIGH REDSHIFT: STRUCTURAL EVOLUTION OF QUIESCENT GALAXIES OVER 10 Gyr OF COSMIC HISTORY
复制标题
DOI：
10.1088/2041-8205/739/2/l44
复制
发表时间：
2011-08
期刊：
影响因子：
--
通讯作者：
I. Damjanov;R. Abraham;K. Glazebrook;P. McCarthy;Evelyn Caris;R. Carlberg;Hsiao-Wen Chen;D. Crampton-D.
中科院分区：
文献类型：
--
作者：
I. Damjanov;R. Abraham;K. Glazebrook;P. McCarthy;Evelyn Caris;R. Carlberg;Hsiao-Wen Chen;D. Crampton-D.
我们提出了一个分析的早期类型的星系超过10 Gyr的宇宙时间的大小增长。我们的分析是基于一个均匀的合成发表的数据，从16个光谱调查观察到类似的空间分辨率，增强了新的测量星系在双子座深调查。总的来说，我们的样本包含了465个星系（主要是早型星系）在红移范围0.2 < z < 2.7的结构数据。在这个红移范围内，被动演化的星系的大小演化是渐进和连续的，没有证据表明z = 1附近的过程会结束或改变，这是一些孤立分析数据子集的调查所暗示的。大小的增长似乎与恒星质量无关，质量归一化的半光半径与红移的比例为Re（1 + z）−1.62 ± 0.34。令人惊讶的是，这个幂律似乎与最近报道的红移范围z = 0.5-3.5的紫外亮星系的连续尺寸演化非常一致。这也符合最近的理论模型的预测。
We present an analysis of the size growth seen in early-type galaxies over 10 Gyr of cosmic time. Our analysis is based on a homogeneous synthesis of published data from 16 spectroscopic surveys observed at similar spatial resolution, augmented by new measurements for galaxies in the Gemini Deep Deep Survey. In total, our sample contains structural data for 465 galaxies (mainly early-type) in the redshift range 0.2 < z < 2.7. The size evolution of passively evolving galaxies over this redshift range is gradual and continuous, with no evidence for an end or change to the process around z ∼ 1, as has been hinted at by some surveys which analyze subsets of the data in isolation. The size growth appears to be independent of stellar mass, with the mass-normalized half-light radius scaling with redshift as Re∝(1 + z)−1.62 ± 0.34. Surprisingly, this power law seems to be in good agreement with the recently reported continuous size evolution of UV-bright galaxies in the redshift range z ∼ 0.5–3.5. It is also in accordance with the predictions from recent theoretical models.