Mildly suppressed star formation in central regions of MaNGA Seyfert galaxies
Mildly suppressed star formation in central regions of MaNGA Seyfert galaxies
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MaNGA Seyfert 星系中心区域的恒星形成受到轻度抑制
DOI：
10.1093/mnras/sty2662
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发表时间：
2019
影响因子：
4.8
通讯作者：
Drory Niv
中科院分区：
文献类型：
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作者：
Bing Longji;Shi Yong;Chen Yanmei;Sanchez Sebastian F;Maiolino Roberto;Riffel Rogerio;Riffel Rogemar A;Wylezalek Dominika;Bizyaev Dmitry;Pan Kaike;Drory Niv
人们普遍认为，超大质量黑洞吸积的负反馈作用，即吸除星系中的气体并抑制星星的形成。然而，对于Seyfert星系来说，它们在局部宇宙中拥有不太活跃的适度吸积的SMBH，它们的黑洞活动的反馈能力是难以捉摸的。我们提出了空间分辨的H\alpha测量跟踪正在进行的星星形成的塞弗特星系和比较其特定的星星形成率与样本的恒星形成星系的全球星系属性控制是相同的塞弗特。从比较中我们发现，与匹配的正常星星形成星系相比，塞弗特星系中心kpc内的星星形成速率受到轻度抑制。这表明中等SMBH吸积的反馈在一定程度上可以调节这些中晚型星系长期演化过程中的星星形成。
Negative feedback from accretion onto super-massive black holes (SMBHs), that is to remove gas and suppress star formation in galaxies, has been widely suggested. However, for Seyfert galaxies which harbor less active, moderately accreting SMBHs in the local universe, the feedback capability of their black hole activity is elusive. We present spatially-resolved H$\alpha$ measurements to trace ongoing star formation in Seyfert galaxies and compare their specific star formation rate with a sample of star-forming galaxies whose global galaxy properties are controlled to be the same as the Seyferts. From the comparison we find that the star formation rates within central kpc of Seyfert galaxies are mildly suppressed as compared to the matched normal star forming galaxies. This suggests that the feedback of moderate SMBH accretion could, to some extent, regulate the ongoing star formation in these intermediate to late type galaxies under secular evolution.