MASSIVE STAR-FORMING HOST GALAXIES OF QUASARS ON SLOAN DIGITAL SKY SURVEY STRIPE 82
MASSIVE STAR-FORMING HOST GALAXIES OF QUASARS ON SLOAN DIGITAL SKY SURVEY STRIPE 82
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DOI：
10.1088/0004-637x/780/2/162
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发表时间：
2013-12
期刊：
影响因子：
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通讯作者：
Y. Matsuoka;M. Strauss;Ted N. Price;Matthew S. DiDonato
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文献类型：
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作者：
Y. Matsuoka;M. Strauss;Ted N. Price;Matthew S. DiDonato
大约800个星系的恒星性质，在z 1010 M的类星体，这是与以前的结果不太明亮的窄线（模糊）活动星系核（AGN）一致。类星体宿主非常蓝，在红色序列中几乎不存在，与正常星系的颜色-星等分布形成鲜明对比。更强大的活动星系核存在于恒星形成效率更高的星系中，这一事实可能表明，活动星系核的负反馈（如果存在的话）并不与活动星系核的最亮相同时发生。我们还发现超大质量黑洞（SMBH; MBH）的质量与宿主恒星质量之间存在正相关关系，但MBH-M星关系相对于局域关系向大MBH或小M星方向偏移。虽然这可能表明SMBH比它们的宿主星系更早生长，但这种说法并不是决定性的，因为这种效应可能受到观测偏差的影响。
The stellar properties of about 800 galaxies hosting optically luminous, unobscured quasars at z 1010 M☉), which is consistent with previous results for less luminous narrow-line (obscured) active galactic nuclei (AGNs). The quasar hosts are very blue and almost absent on the red sequence, showing stark contrast to the color–magnitude distribution of normal galaxies. The fact that more powerful AGNs reside in galaxies with higher star-formation efficiency may indicate that negative AGN feedback, if it exists, is not concurrent with the most luminous phase of AGNs. We also find positive correlation between the mass of supermassive black holes (SMBHs; MBH) and host stellar mass, but the MBH–Mstar relation is offset toward large MBH or small Mstar compared to the local relation. While this could indicate that SMBHs grow earlier than do their host galaxies, such an argument is not conclusive, as the effect may be dominated by observational biases.