An over-massive black hole in a typical star-forming galaxy, 2 billion years after the Big Bang

Benny Trakhtenbrot; C. Megan Urry; Francesca Civano; David J. Rosario; Martin Elvis; Kevin Schawinski; Hyewon Suh; Angela Bongiorno; Brooke D. Simmons

doi:10.1126/science.aaa4506

An over-massive black hole in a typical star-forming galaxy, 2 billion years after the Big Bang

Benny Trakhtenbrot, C. Megan Urry, Francesca Civano, David J. Rosario, Martin Elvis, Kevin Schawinski, Hyewon Suh, Angela Bongiorno, Brooke D. Simmons

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	168-171
Number of pages	4
Journal	Science
Volume	349
Issue number	6244
DOIs	https://doi.org/10.1126/science.aaa4506
State	Published - 10 Jul 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

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10.1126/science.aaa4506

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title = "An over-massive black hole in a typical star-forming galaxy, 2 billion years after the Big Bang",

abstract = "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.",

author = "Benny Trakhtenbrot and Urry, {C. Megan} and Francesca Civano and Rosario, {David J.} and Martin Elvis and Kevin Schawinski and Hyewon Suh and Angela Bongiorno and Simmons, {Brooke D.}",

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doi = "10.1126/science.aaa4506",

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AU - Trakhtenbrot, Benny

AU - Urry, C. Megan

AU - Civano, Francesca

AU - Rosario, David J.

AU - Elvis, Martin

AU - Schawinski, Kevin

AU - Suh, Hyewon

AU - Bongiorno, Angela

AU - Simmons, Brooke D.

PY - 2015/7/10

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AB - 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.

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M3 - مقالة

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An over-massive black hole in a typical star-forming galaxy, 2 billion years after the Big Bang

Abstract

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