一个在z=0.43处形成的尘埃盘：第一个在大合并后重建的晚型盘的例子？
A forming, dust enshrouded disk at z=0.43: the first example of a late type disk rebuilt after a major merger?
摘要：
Abreg：通过将HST/UDF图像与VLT/GIRAFFE的运动学相结合，我们以类似于在附近宇宙中所做的方式导出了遥远星系J033245.11-274724.0的物理模型。在这里，我们研究一个遥远的紧凑LIRGs星系的属性。鉴于光度和分光光度的准确性，我们可以将星系分解为子组件，并纠正它们的红化。该星系主要由UDF图像显示的尘埃笼罩的磁盘。盘半径是银河系的一半，SFR= 20 Mo/yr。形态学和运动学表明，气体和恒星一起迅速向内螺旋，以供给圆盘和中心区域。一个棒和两个非旋转的螺旋臂的组合系统调节物质吸积，诱导大的西格玛，西格玛大于100公里/秒，并重新分配角动量（AM）。详细的物理性质类似于从建模合并的两个相等的质量，气体丰富的星系，合并后0.5 Gyr的期望。在其后期演化中，该星系可能成为一个晚型星系，其演化符合T-F关系，AM主要由合并的轨道AM引起。
英文摘要：
Abreg: By combining HST/UDF imagery with kinematics from VLT/GIRAFFE we derive a physical model of distant galaxy J033245.11-274724.0 in a way similar to what can be done in the nearby Universe. Here we study the properties of a distant compact LIRGs galaxy. Given the photometric and spectro photometric accuracies, we can decompose the galaxy in sub components and correct them for reddening. The galaxy is dominated by a dust enshrouded disk revealed by UDF imagery. The disk radius is half that of the Milky Way and the galaxy have a SFR=20Mo/yr. Morphology and kinematics show that gas and stars together spiral inwards rapidly to feed the disk and the central regions. A combined system of a bar and two non rotating spiral arms regulates the material accretion, induces large sigma, with sigma larger than 100 km/s and redistributes the angular momentum (AM). The detailed physical properties resemble to the expectations from modeling a merger of two equal mass, gaseous rich galaxies, 0.5 Gyr after the merger. In its later evolution, this galaxy could become a late type galaxy which falls on the T-F relation, with an AM mostly induced by the orbital AM of the merger.
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