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arXiv 1708.02683astro-ph.GAastro-ph.HE
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探测活动星系IV中窄线区域的物理:赛丁泉南塞弗特光谱快照巡天(S7)的全部数据发布

Probing the Physics of Narrow Line Regions in Active Galaxies IV: Full data release of The Siding Spring Southern Seyfert Spectroscopic Snapshot Survey (S7)

Adam D. Thomas, Michael A. Dopita, Prajval Shastri, Rebecca Davies, Elise Hampton, Lisa Kewley, Julie Banfield, Brent Groves, Bethan L. James, Chichuan Jin, Sté… 展开作者

Adam D. Thomas, Michael A. Dopita, Prajval Shastri, Rebecca Davies, Elise Hampton, Lisa Kewley, Julie Banfield, Brent Groves, Bethan L. James, Chichuan Jin, Stéphanie Juneau, Preeti Kharb, Lalitha Sairam, Julia Scharwächter, P. Shalima, M. N. Sundar, Ralph Sutherland, Ingyin Zaw

摘要:

我们提出了第二次也是最后一次数据发布的赛丁泉南部塞弗特光谱快照调查(S7)。数据为63个新的星系不包括在第一次数据发布,我们提供了完整的S7样本的131个星系的二维发射线拟合产品。S7使用澳大利亚国立大学2.3米望远镜上的WiFeS仪器,在25 × 38 arcsec ^2的积分视场内,以1 × 1 arcsec ^2的空间像素获得光谱,红色(540 - 700 nm)的光谱分辨率为R = 7000,蓝色(350 - 570 nm)的光谱分辨率为R = 3000。S7包含了迄今为止最大的活动星系样本和最高的光谱分辨率。发射线拟合产品包括线通量,速度和速度分散在整个WiFeS视野,和人工神经网络已被用来确定最佳数量的高斯运动分量的发射线在每个spectrometer。在拟合窄谱线之前,从Seyfert 1星系核空间像素的光谱中减去宽巴耳末谱线。我们仓核光谱和测量红化校正的核通量强窄线为每个星系。核光谱的光学诊断图上进行了分类,其中日冕线[FeVII]6087的强度与[OIII]/H β相关。地图揭示气体激发和运动学包括整个样本,我们提供了新观察到的对象的说明。

英文摘要:

We present the second and final data release of the Siding Spring Southern Seyfert Spectroscopic Snapshot Survey (S7). Data are presented for 63 new galaxies not included in the first data release, and we provide 2D emission-line fitting products for the full S7 sample of 131 galaxies. The S7 uses the WiFeS instrument on the ANU 2.3m telescope to obtain spectra with a spectral resolution of R = 7000 in the red (540 - 700 nm) and R = 3000 in the blue (350 - 570 nm), over an integral field of 25x38 arcsec^2 with 1x1 arcsec^2 spatial pixels. The S7 contains both the largest sample of active galaxies and the highest spectral resolution of any comparable integral field survey to date. The emission-line fitting products include line fluxes, velocities and velocity dispersions across the WiFeS field of view, and an artificial neural network has been used to determine the optimal number of Gaussian kinematic components for emission-lines in each spaxel. Broad Balmer lines are subtracted from the spectra of nuclear spatial pixels in Seyfert 1 galaxies before fitting the narrow lines. We bin nuclear spectra and measure reddening-corrected nuclear fluxes of strong narrow lines for each galaxy. The nuclear spectra are classified on optical diagnostic diagrams, where the strength of the coronal line [FeVII]6087 is shown to be correlated with [OIII]/Hbeta. Maps revealing gas excitation and kinematics are included for the entire sample, and we provide notes on the newly observed objects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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