NGC 2683中杆的运动学和光度学证据
Kinematic and Photometric Evidence for a Bar in NGC 2683
摘要：
我们提出了光学长缝和SparsePak积分场单位发射线光谱，以及光学宽带和近红外图像的边缘上的螺旋星系NGC 2683。我们发现一个多值的，数字的8速度结构的内部45弧秒的长缝频谱和扭曲的等速线的速度场。我们还发现，无论波长，星系的等照度线是四方形的。我们认为，综合考虑，这些运动学和光度特征是在NGC 2683酒吧的存在的证据。我们使用我们的数据来约束杆的方向和强度。
英文摘要：
We present optical long-slit and SparsePak Integral Field Unit emission line spectroscopy along with optical broadband and near IR images of the edge-on spiral galaxy NGC 2683. We find a multi-valued, figure-of-eight velocity structure in the inner 45 arcsec of the long-slit spectrum and twisted isovelocity contours in the velocity field. We also find, regardless of wavelength, that the galaxy isophotes are boxy. We argue that taken together, these kinematic and photometric features are evidence for the presence of a bar in NGC 2683. We use our data to constrain the orientation and strength of the bar.
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