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arXiv 2008.04976astro-ph.GA
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低红移下Seyfert 1星系中普遍存在的AGN风

The ubiquity of AGN winds in Seyfert 1 galaxies at low redshift

Juan Pablo Torres-Papaqui, Roger Coziol, Fernando J. Romero-Cruz, Aitor C. Robleto-Orús, Gabriela Escobar-Vásquez, Abdías Morales-Vargas, J. J. Trejo-Alonso, Ma… 展开作者

Juan Pablo Torres-Papaqui, Roger Coziol, Fernando J. Romero-Cruz, Aitor C. Robleto-Orús, Gabriela Escobar-Vásquez, Abdías Morales-Vargas, J. J. Trejo-Alonso, Marcel Chow-Martínez, Karla A. Cutiva-Alvarez

摘要:

本文分析了3,896个Seyfert~1(Sy 1)星系在z < 0.4时的光谱,以寻找外流的证据。在37%的Sy 1 s中,流出流表现为[OIII]5007的宽的蓝移,平均最大速度V_max ~1014 km/s$,与活动星系核风一致。对于每个Sy 1,我们推导出黑洞(BH)的质量,热光度,爱丁顿比和连续统的幂律指数,并与恒星形成率(SFR)和宿主形态进行了比较。将我们的样品分成两个光谱亚组,仅具有宽巴耳末线的Sy 1(Sy 1B)和具有窄线和宽线的Sy 1(Sy 1 N),并区分那些显示为流出的Sy 1(Sy 1Bw和Sy 1 Nw),我们报告以下差异:(1)Sy 1B-Sy 1Bw中BH质量比Sy 1 N-Sy 1 Nw系统性地高,幂律比Sy 1 N-Sy 1 Nw更陡;(2)Sy 1Bw中V_max比Sy 1 Nw中高,两个星系群中的恒星形成率与BH质量和辐射热光度相关; 3)在有外流的Sy 1中,爱丁顿比和SFR较高; 4)Sy 1的比恒星形成率(sSFR)在形态和质量上是正常的;典型的绿谷早期型旋涡星系,远离淬灭区。从这些结果中,我们得出结论,在Sy 1 s活动星系核风是由较高的吸积率,可能是辐射发射,并没有明确的证据表明,对恒星形成的影响。

英文摘要:

The optical spectra of 3,896 Seyfert~1 (Sy1) galaxies detected with WISE at z < 0.4 were analyzed for evidence of outflows. In 37% of the Sy1s the outflows appear as broad, blue-shifted, of the [OIII]5007, with a mean maximum velocity V_max ~1014 km/s$, consistent with AGN winds. For each Sy1 we deduced that black hole (BH) mass, bolometric luminosity, Eddington ratio and power-law index of the continuum, which we compared with the star formation rate (SFR) and host morphology. Having separated our sample in two spectroscopic subgroups, Sy1s with only broad Balmer lines (Sy1B) and with both narrow and broad (Sy1N) lines and distinguishing those that show as outflow (Sy1Bw and Sy1Nw), we report the following differences: 1) the BH mass is systematically higher and the power-law steeper in the Sy1B-Sy1Bw than in the Sy1N-Sy1Nw, 2) V_max is higher in the Sy1Bw than in the Sy1Nw, correlated in both groups with the BH mass and bolometric luminosity, 3) the Eddington ratio and SFR are higher in the Sy1 with outflows, and 4) the specific star formation rates (sSFRs) of the Sy1s are normal for their morphology and mass; typical of early-type spiral galaxies in the green valley, far from the quenched regime. From these results we conclude that in Sy1s AGN winds are triggered by higher accretion rates and probably radiatively launched, and there is no clear evidence of an effect on the 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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