首页> 外文期刊>The Astrophysical journal >BLACK HOLES OF ACTIVE AND QUIESCENT GALAXIES. I. THE BLACK HOLE-BULGE RELATION REVISITED
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BLACK HOLES OF ACTIVE AND QUIESCENT GALAXIES. I. THE BLACK HOLE-BULGE RELATION REVISITED

机译:活跃和活跃星系的黑洞。 I.修改了黑洞-凸起关系

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Massive black holes detected in the centers of many nearby galaxies show an approximately linear relation with the luminosity of the host bulge, implying that the black hole (BH) mass is 0.001-0.002 of the bulge. Previous work suggested that the black holes of active (Seyfert 1) galaxies have a similar relation, but apparently with a significantly lower value of M_(BH)/M_(bulge) (Wandel). New data show that this difference was mainly due to overestimated BH masses in quiescent galaxies and bulge magnitudes in Seyfert galaxies. Using new and updated data we show that active galactic nuclei (AGNs) have the same BH-bulge relation as ordinary (inactive) galaxies. We derive the BH-bulge relation for a sample of 55 AGNs (Seyfert 1 galaxies + quasars) and 35 quiescent galaxies, finding that broad-line AGNs have an average BH/bulge mass fraction of ~ 0.0015 with a strong correlation (M_(BH) ∝ L_(bulge)~(0.9+-0.16)). This BH-bulge relation is consistent with the BH-bulge relation of quiescent galaxies and much tighter than previous results. Narrow-line AGNs appear to have a lower ratio, M_(BH)/ M_(bulge) ~ 10~(-4) to 10~(-3). We examine various explanations for this lower ratio. We find that the BH/bulge ratio in AGNs is inversely correlated with the emission-line width, implying a strong linear relation between the size of the broad emission-line region and the host bulge luminosity. Finally, combining AGNs with observed and estimated stellar velocity dispersion, we find a significant correlation (M_(BH) ∝ σ(3.5-5)), consistent with that of quiescent galaxies.
机译:在许多附近星系中心检测到的大质量黑洞与宿主凸起的光度呈近似线性关系,这意味着黑洞(BH)的质量为凸起的0.001-0.002。先前的工作表明,活动星系(Seyfert 1)的黑洞具有相似的关系,但显然M_(BH)/ M_(bulge)(Wandel)的值明显较低。新数据表明,这种差异主要是由于静态星系中的BH质量被高估以及塞弗特星系中的凸起幅度所致。使用新的和更新的数据,我们证明了活动星系核(AGN)与普通(非活动)星系具有相同的BH凸起关系。我们推导了55个AGN(塞弗特1星系+类星体)和35个静止星系的样本的BH-凸起关系,发现宽线AGN的平均BH /凸起质量分数约为0.0015,并且具有很强的相关性(M_(BH )∝ L_(凸出)〜(0.9 + -0.16))。这种BH-凸出关系与静态星系的BH-凸出关系一致,并且比以前的结果更紧密。窄线AGN的比率似乎较低,M_(BH)/ M_(凸起)〜10〜(-4)至10〜(-3)。我们研究了有关此较低比率的各种解释。我们发现,AGNs中的BH /凸起比与发射线宽度成反比,这意味着宽发射线区域的尺寸与主体凸起发光度之间存在很强的线性关系。最后,将AGNs与观测和估计的恒星速度色散相结合,我们发现了一个显着的相关性(M_(BH)∝σ(3.5-5)),与静止星系的相符。

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