GHASP：对203个螺旋星系和不规则星系的Halpha运动学巡天- VII。对97个星系的Halalpha数据立方体的再分析
GHASP : An Halpha kinematic survey of 203 spiral and irregular galaxies - VII. Revisiting the analysis of Halpha data cubes for 97 galaxies
摘要：
GHASP巡天（Gassendi HAlpha巡天）包括203个螺旋星系和不规则星系的三维Ha数据立方体，涵盖了大范围的形态类型和绝对星等，用于运动学分析。这是迄今为止公布的最大的法布里-珀罗数据样本。为了提供一个均匀的样本，减少和分析使用相同的程序，我们在本文中提出了新的减少和分析的一组97个星系已经发表在以前的论文，但现在使用新的数据减少程序通过整个样本。GHASP的调查，现在实现了整个样本减少使用自适应binning技术的基础上Voronoi镶嵌。我们推导出了Ha数据立方体，从中计算出几乎所有星系的Ha图、径向速度场以及剩余速度场、位置-速度图、旋转曲线和运动学参数。该方法基于剩余速度场的功率谱，均匀地计算了旋转曲线、运动学参数及其不确定性。给出了整个样机的运动学参数。第一次，已计算出的集成哈配置文件，并提出了整个样本。从这些配置文件推导出的总哈流量已被用来，以提供一个流量校准的203 GHASP星系。本文证实了已经得出的结论，从一半的样本有关（i）增加的精度使用运动学数据的位置角测量，（ii）的困难，特别是低倾角星系的形态和运动学倾角有强大的测定和（iii）之间的塔利-费舍尔关系从我们的数据和以前的测定非常好的协议。
英文摘要：
The GHASP survey (Gassendi HAlpha survey of SPirals) consists of 3D Ha data cubes for 203 spiral and irregular galaxies, covering a large range in morphological types and absolute magnitudes, for kinematics analysis. It is the largest sample of Fabry-Perot data published up to now. In order to provide an homogenous sample, reduced and analyzed using the same procedure, we present in this paper the new reduction and analysis for a set of 97 galaxies already published in previous papers but now using the new data reduction procedure adopted for the whole sample. The GHASP survey is now achieved and the whole sample is reduced using adaptive binning techniques based on Voronoi tessellations. We have derived Ha data cubes from which are computed Ha maps, radial velocity fields as well as residual velocity fields, position-velocity diagrams, rotation curves and kinematical parameters for almost all galaxies. The rotation curves, the kinematical parameters and their uncertainties are computed homogeneously using the new method based on the power spectrum of the residual velocity field. This paper provides the kinematical parameters for the whole sample. For the first time, the integrated Ha profiles have been computed and are presented for the whole sample. The total Ha fluxes deduced from these profiles have been used in order to provide a flux calibration for the 203 GHASP galaxies. This paper confirms the conclusions already drawn from half the sample concerning (i) the increased accuracy of position angles measurements using kinematical data, (ii) the difficulty to have robust determinations of both morphological and kinematical inclinations in particular for low inclination galaxies and (iii) the very good agreement between the Tully-Fisher relationship derived from our data and previous determinations.
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