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arXiv 2008.11210astro-ph.GA
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MaNGA中406个活动星系核的星表:射电模AGN与恒星形成猝灭的联系

A Catalog of 406 AGNs in MaNGA: A Connection between Radio-mode AGN and Star Formation Quenching

Julia M. Comerford, James Negus, Francisco Müller-Sánchez, Michael Eracleous, Dominika Wylezalek, Thaisa Storchi-Bergmann, Jenny E. Greene, R. Scott Barrows, Re… 展开作者

Julia M. Comerford, James Negus, Francisco Müller-Sánchez, Michael Eracleous, Dominika Wylezalek, Thaisa Storchi-Bergmann, Jenny E. Greene, R. Scott Barrows, Rebecca Nevin, Namrata Roy, Aaron Stemo

摘要:

精确的活动星系核(AGN)识别和空间分辨的宿主星系特性是研究活动星系核和活动星系核反馈在星系及其中心超大质量黑洞共同进化中的作用的有力结合。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Galerkin在Apache点天文台(MANGA)。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WISE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。我们将活动星系核分为射电宁静型和射电模态型活动星系核,并研究了活动星系核的类别与宿主星系恒星形成率和恒星星族的相关性。当与射电宁静活动星系核宿主星系相比,我们发现,射电模式活动星系核宿主星系优先居住在椭圆星系,进一步低于恒星形成的主要序列(在固定的星系质量较低的恒星形成率),有较老的恒星星族,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恒星形成)。这些结果建立了无线电模式活动星系核和恒星形成的抑制之间的联系。

英文摘要:

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 (MaNGA). 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 WISE colors, Swift/BAT ultra hard 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 reside preferentially in elliptical galaxies, 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.

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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