论文标题
相互作用的矮星系IC 3167中的缓慢偏斜杆
A slow lopsided bar in the interacting dwarf galaxy IC 3167
论文作者
论文摘要
我们介绍了IC 3167的表面光度法和恒星运动学，这是一个矮人的矮小的星系，载有一个偏斜的弱棒，并进入处女座簇中。我们通过将tremaine-weinberg方法应用于恒星吸收积分磁场光谱法，测量了宽带成像和条形图速度的条形半径和强度。我们从恒星运动学和条形图速度得出了旋转半径与条形半径的比率（r = 1.7 + 0.5-0.3）。条形旋转缓慢的可能性是杆快速的两倍以上。这使我们可以推断出该条的形成是由正在进行的互动而不是内部过程触发的。
We present surface photometry and stellar kinematics of IC 3167, a dwarf galaxy hosting a lopsided weak bar and infalling into the Virgo cluster. We measured the bar radius and strength from broad-band imaging and bar pattern speed by applying the Tremaine-Weinberg method to stellar-absorption integral-field spectroscopy. We derived the ratio of the corotation radius to bar radius (R = 1.7 + 0.5 - 0.3) from stellar kinematics and bar pattern speed. The probability that the bar is rotating slowly is more than twice as likely as that the bar is fast. This allows us to infer that the formation of this bar was triggered by the ongoing interaction rather than to internal processes.
