@article{rennehan_rapid_2019,
	title = {Rapid early coeval star formation and assembly of the most massive galaxies in the universe},
	volume = {1907},
	url = {http://adsabs.harvard.edu/abs/2019arXiv190700977R},
	abstract = {The current consensus on the formation and evolution of the brightest 
cluster galaxies is that their stellar mass forms early (\$z {\textbackslash}gtrsim 4\$)
in separate galaxies that then eventually assemble the main structure at
late times (\$z {\textbackslash}lesssim 1\$). However, advances in observational
techniques have led to the discovery of protoclusters out to \$z {\textbackslash}sim 7\$,
suggesting that the late-assembly picture may not be fully complete.
Using a combination of observationally constrained hydrodynamical and
dark-matter-only simulations, we show that the stellar assembly time of
a sub-set of brightest cluster galaxies occurs at high redshifts (\$z
{\textgreater} 3\$) rather than at low redshifts (\$z {\textless} 1\$), as is commonly
though. We find that highly overdense protoclusters assemble their
stellar mass into brightest cluster galaxies within \${\textbackslash}sim 1\$
\${\textbackslash}mathrm\{Gyr\}\$ of evolution -- producing massive blue elliptical
galaxies at high redshifts (\$z {\textbackslash}gtrsim 3\$). We argue that there is a
downsizing effect on the cluster scale wherein the brightest cluster
galaxies in the cores of the most-massive clusters assemble earlier than
those in lower-mass clusters. The James Webb Space Telescope will be
able to detect and confirm our prediction in the near future, and we
discuss the implications to constraining the value of
\${\textbackslash}sigma\_{\textbackslash}mathrm\{8\}\$.},
	urldate = {2019-07-05},
	journal = {arXiv e-prints},
	author = {Rennehan, Douglas and Babul, Arif and Hayward, Christopher C. and Bottrell, Connor and Hani, Maan H. and Chapman, Scott C.},
	month = jul,
	year = {2019},
	keywords = {Astrophysics - Astrophysics of Galaxies},
	pages = {arXiv:1907.00977},
}

{"_id":"4bJZmdFYzDTweHJbZ","bibbaseid":"rennehan-babul-hayward-bottrell-hani-chapman-rapidearlycoevalstarformationandassemblyofthemostmassivegalaxiesintheuniverse-2019","author_short":["Rennehan, D.","Babul, A.","Hayward, C. C.","Bottrell, C.","Hani, M. H.","Chapman, S. C."],"bibdata":{"bibtype":"article","type":"article","title":"Rapid early coeval star formation and assembly of the most massive galaxies in the universe","volume":"1907","url":"http://adsabs.harvard.edu/abs/2019arXiv190700977R","abstract":"The current consensus on the formation and evolution of the brightest cluster galaxies is that their stellar mass forms early (\\$z {\\textbackslash}gtrsim 4\\$) in separate galaxies that then eventually assemble the main structure at late times (\\$z {\\textbackslash}lesssim 1\\$). However, advances in observational techniques have led to the discovery of protoclusters out to \\$z {\\textbackslash}sim 7\\$, suggesting that the late-assembly picture may not be fully complete. Using a combination of observationally constrained hydrodynamical and dark-matter-only simulations, we show that the stellar assembly time of a sub-set of brightest cluster galaxies occurs at high redshifts (\\$z {\\textgreater} 3\\$) rather than at low redshifts (\\$z {\\textless} 1\\$), as is commonly though. We find that highly overdense protoclusters assemble their stellar mass into brightest cluster galaxies within \\${\\textbackslash}sim 1\\$ \\${\\textbackslash}mathrm\\{Gyr\\}\\$ of evolution – producing massive blue elliptical galaxies at high redshifts (\\$z {\\textbackslash}gtrsim 3\\$). We argue that there is a downsizing effect on the cluster scale wherein the brightest cluster galaxies in the cores of the most-massive clusters assemble earlier than those in lower-mass clusters. The James Webb Space Telescope will be able to detect and confirm our prediction in the near future, and we discuss the implications to constraining the value of \\${\\textbackslash}sigma_{\\textbackslash}mathrm\\{8\\}\\$.","urldate":"2019-07-05","journal":"arXiv e-prints","author":[{"propositions":[],"lastnames":["Rennehan"],"firstnames":["Douglas"],"suffixes":[]},{"propositions":[],"lastnames":["Babul"],"firstnames":["Arif"],"suffixes":[]},{"propositions":[],"lastnames":["Hayward"],"firstnames":["Christopher","C."],"suffixes":[]},{"propositions":[],"lastnames":["Bottrell"],"firstnames":["Connor"],"suffixes":[]},{"propositions":[],"lastnames":["Hani"],"firstnames":["Maan","H."],"suffixes":[]},{"propositions":[],"lastnames":["Chapman"],"firstnames":["Scott","C."],"suffixes":[]}],"month":"July","year":"2019","keywords":"Astrophysics - Astrophysics of Galaxies","pages":"arXiv:1907.00977","bibtex":"@article{rennehan_rapid_2019,\n\ttitle = {Rapid early coeval star formation and assembly of the most massive galaxies in the universe},\n\tvolume = {1907},\n\turl = {http://adsabs.harvard.edu/abs/2019arXiv190700977R},\n\tabstract = {The current consensus on the formation and evolution of the brightest \ncluster galaxies is that their stellar mass forms early (\\$z {\\textbackslash}gtrsim 4\\$)\nin separate galaxies that then eventually assemble the main structure at\nlate times (\\$z {\\textbackslash}lesssim 1\\$). However, advances in observational\ntechniques have led to the discovery of protoclusters out to \\$z {\\textbackslash}sim 7\\$,\nsuggesting that the late-assembly picture may not be fully complete.\nUsing a combination of observationally constrained hydrodynamical and\ndark-matter-only simulations, we show that the stellar assembly time of\na sub-set of brightest cluster galaxies occurs at high redshifts (\\$z\n{\\textgreater} 3\\$) rather than at low redshifts (\\$z {\\textless} 1\\$), as is commonly\nthough. We find that highly overdense protoclusters assemble their\nstellar mass into brightest cluster galaxies within \\${\\textbackslash}sim 1\\$\n\\${\\textbackslash}mathrm\\{Gyr\\}\\$ of evolution -- producing massive blue elliptical\ngalaxies at high redshifts (\\$z {\\textbackslash}gtrsim 3\\$). We argue that there is a\ndownsizing effect on the cluster scale wherein the brightest cluster\ngalaxies in the cores of the most-massive clusters assemble earlier than\nthose in lower-mass clusters. The James Webb Space Telescope will be\nable to detect and confirm our prediction in the near future, and we\ndiscuss the implications to constraining the value of\n\\${\\textbackslash}sigma\\_{\\textbackslash}mathrm\\{8\\}\\$.},\n\turldate = {2019-07-05},\n\tjournal = {arXiv e-prints},\n\tauthor = {Rennehan, Douglas and Babul, Arif and Hayward, Christopher C. and Bottrell, Connor and Hani, Maan H. and Chapman, Scott C.},\n\tmonth = jul,\n\tyear = {2019},\n\tkeywords = {Astrophysics - Astrophysics of Galaxies},\n\tpages = {arXiv:1907.00977},\n}\n\n","author_short":["Rennehan, D.","Babul, A.","Hayward, C. C.","Bottrell, C.","Hani, M. H.","Chapman, S. C."],"key":"rennehan_rapid_2019","id":"rennehan_rapid_2019","bibbaseid":"rennehan-babul-hayward-bottrell-hani-chapman-rapidearlycoevalstarformationandassemblyofthemostmassivegalaxiesintheuniverse-2019","role":"author","urls":{"Paper":"http://adsabs.harvard.edu/abs/2019arXiv190700977R"},"keyword":["Astrophysics - Astrophysics of Galaxies"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/polyphant","dataSources":["7gvjSdWrEu7z5vjjj"],"keywords":["astrophysics - astrophysics of galaxies"],"search_terms":["rapid","early","coeval","star","formation","assembly","massive","galaxies","universe","rennehan","babul","hayward","bottrell","hani","chapman"],"title":"Rapid early coeval star formation and assembly of the most massive galaxies in the universe","year":2019}