Illuminating gas inflows/outflows in the MUSE deepest fields: Lyα nebulae around forming galaxies at z ≃ 3.3
Illuminating gas inflows/outflows in the MUSE deepest fields: Lyα nebulae around forming galaxies at z ≃ 3.3
复制标题
照亮 MUSE 最深区域的气体流入/流出：在 z ≃ 3.3 处形成星系周围的 Lyα 星云
DOI：
10.1093/mnras/stw2442
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发表时间：
2016
影响因子：
4.8
通讯作者：
R. Gilli
中科院分区：
文献类型：
--
作者：
E. Vanzella;I. Balestra;M. Gronke;W. Karman;G. Caminha;M. Dijkstra;P. Rosati;S. D. Barros;S. D. Barros;K. Caputi;C. Grillo;C. Grillo;P. Tozzi;M. Meneghetti;A. Mercurio;R. Gilli
我们报告了在哈勃超深场（HUDF, ~ 40kpc X 80 kpc）和哈勃前沿场星系团MACSJ0416 （~ 40kpc）后面z~3.3的扩展Ly-alpha星云的发现，在空间上与恒星形成星系群有关。VLT/MUSE积分场光谱揭示了具有空间变化双峰Ly-alpha发射的复杂结构。总的来说，两个Ly-alpha星云的光谱轮廓非常相似，都显示出明显的蓝色发射，比红色峰值更强烈，更宽。从位于HUDF的第一个星云中，没有检测到x射线发射，这不利于agn的存在。在距星云2弧秒范围内的11个星系的光谱红移已经得到，红移范围为1.037
We report on the discovery of extended Ly-alpha nebulae at z~3.3 in the Hubble Ultra Deep Field (HUDF, ~ 40 kpc X 80 kpc) and behind the Hubble Frontier Fields galaxy cluster MACSJ0416 (~ 40kpc), spatially associated with groups of star-forming galaxies. VLT/MUSE integral field spectroscopy reveals a complex structure with a spatially-varying double peaked Ly-alpha emission. Overall, the spectral profiles of the two Ly-alpha nebulae are remarkably similar, both showing a prominent blue emission, more intense and slightly broader than the red peak. From the first nebula, located in the HUDF, no X-ray emission has been detected, disfavoring the possible presence of AGNs. Spectroscopic redshifts have been derived for 11 galaxies within two arcsec from the nebula and spanning the redshift range 1.037