A Catalog of 406 AGNs in MaNGA: A Connection between Radio-mode AGNs and Star Formation Quenching
A Catalog of 406 AGNs in MaNGA: A Connection between Radio-mode AGNs and Star Formation Quenching
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DOI：
10.3847/1538-4357/abb2ae
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
J. Comerford;J. Negus;F. Müller-Sánchez;M. Eracleous;D. Wylezalek;T. Storchi-Bergmann;J. Greene
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文献类型：
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作者：
J. Comerford;J. Negus;F. Müller-Sánchez;M. Eracleous;D. Wylezalek;T. Storchi-Bergmann;J. Greene
精确的活动星系核（AGN）的识别和空间分辨的宿主星系的属性是一个强大的组合的作用的研究活动星系核和活动星系核反馈的星系及其中央超大质量黑洞的共同演化。在这里，我们提出了强大的识别406 AGN在第一个6261星系观测到的积分场光谱调查映射附近的Galerkin在阿帕奇点天文台。而不是使用光学线通量比，这可能是很难解释的冲击和金属丰度的影响，我们通过中红外宽场红外巡天探测器的颜色，雨燕/BAT超硬X射线探测，NVSS和第一无线电观测，SDSS光谱和广泛的发射线识别活动星系核。我们将活动星系核细分为射电宁静活动星系核和射电模式活动星系核，并研究了活动星系核类别与宿主星系星星形成速率和恒星种群的相关性。当与射电宁静活动星系核的宿主星系相比，我们发现，射电模式活动星系核的宿主星系优先椭圆形，进一步低于恒星形成的主要序列（与较低的星星形成率在固定的星系质量），有老年人的恒星种群，并有更多的负恒星年龄梯度与银河系的距离（表明由内而外淬火的星星形成）。这些结果建立了射电型活动星系核与抑制星星形成之间的联系。
Accurate active galactic nucleus (AGN) identifications and spatially resolved host galaxy properties are a powerful combination for studies of the role of AGNs and AGN feedback in the coevolution of galaxies and their central supermassive black holes. Here, we present robust identifications of 406 AGNs in the first 6261 galaxies observed by the integral field spectroscopy survey Mapping Nearby Galaxies at Apache Point Observatory. Instead of using optical line flux ratios, which can be difficult to interpret in light of the effects of shocks and metallicity, we identify the AGNs via mid-infrared Wide-field Infrared Survey Explorer colors, Swift/BAT ultrahard X-ray detections, NVSS and FIRST radio observations, and broad emission lines in SDSS spectra. We subdivide the AGNs into radio-quiet and radio-mode AGNs, and examine the correlations of the AGN classes with host galaxy star formation rates and stellar populations. When compared to the radio-quiet AGN host galaxies, we find that the radio-mode AGN host galaxies are preferentially elliptical, lie further beneath the star-forming main sequence (with lower star formation rates at fixed galaxy mass), have older stellar populations, and have more negative stellar age gradients with galactocentric distance (indicating inside-out quenching of star formation). These results establish a connection between radio-mode AGNs and the suppression of star formation.