论文标题

处女座星系星系(Shivir)的光谱和H波段成像调查:数据目录和运动型曲线

The Spectroscopy and H-band Imaging of Virgo cluster galaxies (SHIVir) Survey: Data Catalogue and Kinematic Profiles

论文作者

Ouellette, Nathalie N. -Q., Courteau, Stéphane, Holtzman, Jon A., McDonald, Michael, Cappellari, Michele, Roediger, Joel C., Côté, Patrick, Dalcanton, Julianne J., Bontà, Elena Dalla, Ferrarese, Laura, Tully, R. Brent, Stone, Connor, Peng, Eric W.

论文摘要

处女座聚类星系的光谱和H波段成像'(Shivir)调查是一项光学和近红外调查,结合了SDSS光度法,深H波段光度法和190个处女群星系(VCG)的长时间光谱光谱=覆盖所有道德类型的长时间光谱= MORPHS群体(MORPHES)**** 7.8-11.5 $。我们介绍了Shivir样品的光谱样品选择,数据还原和分析。我们已经使用并优化了\ texttt {ppxf}例程从我们的数据中提取出色的运动学。最终,可用于133个Shivir星系的分辨运动轮廓(旋转曲线和速度分散曲线)。 Shivir样品的光度法和运动学参数的全面数据库具有:GRIZH幅度,有效的表面亮度,有效和同在半径,旋转速度,速度分散体以及恒星和动态质量。参数分布突出显示了一些双峰分布和可能的样品偏差。对解决的扩展速度分散曲线的定性研究表明,所谓的``sigma-drop''运动图与透镜S0星系中的环之间存在联系。上升的分散曲线与早期型螺旋形或矮椭圆形有关,旋转成分很重要,而峰值曲线与无特征的巨型椭圆形相关。

The ``Spectroscopy and H-band Imaging of Virgo cluster galaxies'' (SHIVir) survey is an optical and near-infrared survey which combines SDSS photometry, deep H-band photometry, and long-slit optical spectroscopy for 190 Virgo cluster galaxies (VCGs) covering all morphological types over the stellar mass range log (M_*/M_Sun) = 7.8-11.5$. We present the spectroscopic sample selection, data reduction, and analysis for this SHIVir sample. We have used and optimised the \texttt{pPXF} routine to extract stellar kinematics from our data. Ultimately, resolved kinematic profiles (rotation curves and velocity dispersion profiles) are available for 133 SHIVir galaxies. A comprehensive database of photometric and kinematic parameters for the SHIVir sample is presented with: grizH magnitudes, effective surface brightnesses, effective and isophotal radii, rotational velocities, velocity dispersions, and stellar and dynamical masses. Parameter distributions highlight some bimodal distributions and possible sample biases. A qualitative study of resolved extended velocity dispersion profiles suggests a link between the so-called ``sigma-drop'' kinematic profile and the presence of rings in lenticular S0 galaxies. Rising dispersion profiles are linked to early-type spirals or dwarf ellipticals for which a rotational component is significant, whereas peaked profiles are tied to featureless giant ellipticals.

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