PROFIT：一种新的排放线轮廓拟合替代方案
PROFIT: a new alternative for emission-line PROfile FITting
摘要：
我简要地描述了一个简单的程序，发射线轮廓拟合高斯曲线或高斯厄米级数。PROFIT（line-PROfileFITting）程序代表了一种新的替代方法，用于拟合数据立方体，如积分场光谱学或法布里-珀罗干涉术中的数据立方体，并可能有助于更好地研究不同天体的发射线通量分布和气体运动学，如星系的中心区域和恒星形成区域。PROFIT例程是用IDL语言编写的，可在http://www.ufsm.br/rogemar/software.html上获得。用PROFIT程序拟合了由Gemini NIFS获得的Seyfert星系Mrk 1066内350 pc的约1800个光谱的[Fe II] 1.257 μ m发射线轮廓，结果表明，用Gauss-Hermite级数比用常用的高斯曲线能更好地再现谱线轮廓。二维h_3高斯-厄米特矩图显示在射电结构边缘附近的区域其绝对值最高。这些高值可能起源于一个双锥流出的气体与无线电喷流-以前观察到的光学[O III]发射。对这个运动学分量的分析表明，射电喷流离开星系中心，西北侧略微朝向我们，东南侧远离我们，部分被星系盘隐藏。
英文摘要：
I briefly describe a simple routine for emission-line profiles fitting by Gaussian curves or Gauss-Hermite series. The PROFIT (line-PROfile FITting) routine represent a new alternative for use in fits data cubes, as those from Integral Field Spectroscopy or Fabry-Perot Interferometry, and may be useful to better study the emission-line flux distributions and gas kinematics in distinct astrophysical objects, such as the central regions of galaxies and star forming regions. The PROFIT routine is written in IDL language and is available at http://www.ufsm.br/rogemar/software.html. The PROFIT routine was used to fit the [Fe II]1.257um emission-line profiles for about 1800 spectra of the inner 350 pc of the Seyfert galaxy Mrk1066 obtained with Gemini NIFS and shows that the line profiles are better reproduced by Gauss-Hermite series than by the commonly used Gaussian curves. The two-dimensional map of the h_3 Gauss-Hermite moment shows its highest absolute values in regions close to the edge of the radio structure. These high values may be originated in an biconical outflowing gas associated with the radio jet - previously observed in the optical [O III] emission. The analysis of this kinematic component indicates that the radio jet leaves the center of the galaxy with the north-west side slightly oriented towards us and the south-east side away from us, being partially hidden by the disc of the galaxy.
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