An over-massive black hole in a typical star-forming galaxy, 2 billion years after the Big Bang
Supermassive black holes (SMBHs) and their host galaxies are generally thought to coevolve, so that the SMBH achieves up to about 0.2 to 0.5% of the host galaxy mass in the present day. The radiation emitted from the growing SMBH is expected to affect star formation throughout the host galaxy. The r...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2015-07, Vol.349 (6244), p.168-171 |
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| container_title | Science (American Association for the Advancement of Science) |
| container_volume | 349 |
| creator | Trakhtenbrot, Benny Urry, C. Megan Civano, Francesca Rosario, David J. Elvis, Martin Schawinski, Kevin Suh, Hyewon Bongiorno, Angela Simmons, Brooke D. |
| description | Supermassive black holes (SMBHs) and their host galaxies are generally thought to coevolve, so that the SMBH achieves up to about 0.2 to 0.5% of the host galaxy mass in the present day. The radiation emitted from the growing SMBH is expected to affect star formation throughout the host galaxy. The relevance of this scenario at early cosmic epochs is not yet established. We present spectroscopic observations of a galaxy at redshift z = 3.328, which hosts an actively accreting, extremely massive BH, in its final stages of growth. The SMBH mass is roughly one-tenth the mass of the entire host galaxy, suggesting that it has grown much more efficiently than the host, contrary to models of synchronized coevolution. The host galaxy is forming stars at an intense rate, despite the presence of a SMBH-driven gas outflow. |
| doi_str_mv | 10.1126/science.aaa4506 |
| format | Article |
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The SMBH mass is roughly one-tenth the mass of the entire host galaxy, suggesting that it has grown much more efficiently than the host, contrary to models of synchronized coevolution. 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| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 2015-07, Vol.349 (6244), p.168-171 |
| issn | 0036-8075 1095-9203 |
| language | eng |
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| source | JSTOR Archive Collection A-Z Listing; American Association for the Advancement of Science |
| subjects | Accretion Big Bang theory Black holes Black holes (astronomy) Galaxies Red shift Spectroscopy Star & galaxy formation Star formation Time measurements Universe |
| title | An over-massive black hole in a typical star-forming galaxy, 2 billion years after the Big Bang |
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