z=3.8射电星系4C41.17和TN J2007-1316的超新星遗迹质量沿恒星形成历史的累积
Supernova remnant mass cumulated along the star formation history of the z=3.8 radiogalaxies 4C41.17 and TN J2007-1316
摘要：
在这篇论文中，我们证明了在两个z=3.8的射电星系4C41.17和TN J2007-1316的恒星形成历史中，由核心坍缩超新星累积的超新星遗迹（SNR）质量达到了> 10^9 Msun，与在类似红移下从SDSS样本中测量的超大质量黑洞（SMBH）质量相当。SNR质量是从已经爆炸的超新星质量中减去星系年龄时的喷出物后测量的，其中仍然发光的恒星的质量最适合观测到的光谱能量分布（SED），在星系演化模型Pégasse的帮助下，不断扩展到光学斯皮策-赫歇尔-亚毫米域。对于最近和较老的恒星星族，信噪比质量在10^（9 ~ 10）M太阳上变化，信噪比与恒星质量比在1%~ 0.1%之间，与观测到的低z SMBH与恒星质量比相当。对于模板射电星系4C41.17，由大孔径（>4arcsec= 30 kpc）观测估算的信噪比和恒星星族质量与多个光学HST（~ 700 pc）结构的总质量在一个质量量级内是相容的，与VLA射电辐射有关，两者都在0.1arcsec。探测中央黑洞的SNR吸积是SMBH增长的一个简单解释，需要恒星形成，恒星和星系动力学的物理学与各种过程（淬火，合并，负反馈）的后果和膨胀SMBH关系的关键。
英文摘要：
In this paper, we show that the supernova remnant (SNR) masses cumulated from core-collapse supernovae along the star formation history of two powerful z=3.8 radio galaxies 4C41.17 and TN J2007-1316 reach up to > 10^9 Msun, comparable with supermassive black hole (SMBH) masses measured from the SDSS sample at similar redshifts. The SNR mass is measured from the already exploded supernova mass after subtraction of ejecta at the galaxy age where the mass of still luminous stars fits at best the observed spectral energy distribution (SED), continuously extended to the optical-Spitzer-Herschel-submm domains, with the help of the galaxy evolution model Pégase.3. For the recent and old stellar populations, SNR masses vary on 10^(9 to 10) Msun and the SNR-to-star mass ratio between 1 and 0.1 percent is comparable to the observed low-z SMBH-to-star mass ratio. For the template radio galaxy 4C41.17, SNR and stellar population masses estimated from large aperture (>4arcsec=30kpc) observations are compatible, within one mass order, with the total mass of multiple optical HST (~700pc) structures, associated with VLA radio emissions, both at 0.1 arcsec. Probing the SNR accretion by central black holes is a simple explanation for SMBH growth, requiring physics on star formation, stellar and galaxy dynamics with consequences on various processes (quenching, mergers, negative feedback) and a key to the relation bulge-SMBH.
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