@article{stefanon_hst_2017,
	title = {{HST} imaging of the brightest z{\textasciitilde}8-9 galaxies from {UltraVISTA}: the extreme bright end of the {UV} luminosity function},
	volume = {1706},
	shorttitle = {{HST} imaging of the brightest z{\textasciitilde}8-9 galaxies from {UltraVISTA}},
	url = {http://adsabs.harvard.edu/abs/2017arXiv170604613S},
	abstract = {We report on the discovery of three especially bright candidate 
\$z\_\{phot\} {\textbackslash}gtrsim 8\$ galaxies. Five sources were targeted for follow-up
with HST/WFC3, selected from a larger sample of 16 bright (\$24.8
{\textbackslash}lesssim H{\textbackslash}lesssim25.5\${\textasciitilde}mag) candidate \$z{\textbackslash}gtrsim 8\$ LBGs identified over
the 1.6 degrees\${\textasciicircum}2\$ of the COSMOS/UltraVISTA field. These were
identified as \$Y\$ and \$J\$ dropouts by leveraging the deep
(\$Y\$-to-\$K\_{\textbackslash}mathrm\{S\} {\textbackslash}sim 25.6-25.2\${\textasciitilde}mag, \$5{\textbackslash}sigma\$) NIR data from the
UltraVISTA DR3 release, deep ground based optical imaging from the
CFHTLS and Subaru Suprime Cam programs and Spitzer/IRAC mosaics
combining observations from the SMUVS and SPLASH programs. Through the
refined spectral energy distributions, which now also include new
HyperSuprime Cam \$g, r, i, z,\$ and \$Y\$ band data, we confirm that 3/5
galaxies have robust \$z\_\{phot\}{\textbackslash}sim8.0-8.7\$, consistent with the initial
selection. The remaining 2/5 galaxies have a nominal \$z\_\{phot\}{\textbackslash}sim2\$.
However, if we use the HST data alone, these objects have increased
probability of being at \$z{\textbackslash}sim9\$. Furthermore, we measure mean UV
continuum slopes \${\textbackslash}beta=-1.97{\textbackslash}pm0.23\$ for the three \$z{\textbackslash}sim8-9\$ galaxies,
marginally bluer than similarly luminous \$z{\textbackslash}sim4-6\$ in CANDELS but
consistent with previous measurements of similarly luminous galaxies at
\$z {\textbackslash}sim 7\$. The circularized effective radius for our brightest source
is \$0.9{\textbackslash}pm0.2\$ kpc, consistent with previous measurements for a bright
\$z{\textbackslash}sim11\$ galaxy and bright \$z{\textbackslash}sim7\$ galaxies. Finally, using the
\$1/V\_{\textbackslash}mathrm\{max\}\$ formalism, we estimate for the first time the volume
density of the extreme bright (\$M\_{\textbackslash}mathrm\{UV\}{\textbackslash}lesssim -22\${\textasciitilde}mag) end of
the \$z{\textbackslash}sim8\$ UV LF from actual detection of sources, as opposed to
current upper limits from non-detections. Despite this exceptional
result, the still large statistical uncertainties do not allow us to
discriminate between a Schechter and a double power-law form.},
	journal = {ArXiv e-prints},
	author = {Stefanon, Mauro and Labbé, Ivo and Bouwens, Rychard J. and Brammer, Gabriel B. and Oesch, Pascal and Franx, Marijn and Fynbo, Johan P. U. and Milvang-Jensen, Bo and Muzzin, Adam and Illingworth, Garth D. and Le Fèvre, Olivier and Caputi, Karina I. and Holwerda, Benne W. and McCracken, Henry J. and Smit, Renske and Magee, Dan},
	month = jun,
	year = {2017},
	keywords = {Astrophysics - Astrophysics of Galaxies},
	pages = {arXiv:1706.04613},
}

{"_id":"sEEoehFjMFQRrwM9E","bibbaseid":"stefanon-labb-bouwens-brammer-oesch-franx-fynbo-milvangjensen-etal-hstimagingofthebrightestztextasciitilde89galaxiesfromultravistatheextremebrightendoftheuvluminosityfunction-2017","author_short":["Stefanon, M.","Labbé, I.","Bouwens, R. J.","Brammer, G. B.","Oesch, P.","Franx, M.","Fynbo, J. P. U.","Milvang-Jensen, B.","Muzzin, A.","Illingworth, G. D.","Le Fèvre, O.","Caputi, K. I.","Holwerda, B. W.","McCracken, H. J.","Smit, R.","Magee, D."],"bibdata":{"bibtype":"article","type":"article","title":"HST imaging of the brightest z\\textasciitilde8-9 galaxies from UltraVISTA: the extreme bright end of the UV luminosity function","volume":"1706","shorttitle":"HST imaging of the brightest z\\textasciitilde8-9 galaxies from UltraVISTA","url":"http://adsabs.harvard.edu/abs/2017arXiv170604613S","abstract":"We report on the discovery of three especially bright candidate \\$z_\\{phot\\} {\\textbackslash}gtrsim 8\\$ galaxies. Five sources were targeted for follow-up with HST/WFC3, selected from a larger sample of 16 bright (\\$24.8 {\\textbackslash}lesssim H{\\textbackslash}lesssim25.5\\$\\textasciitildemag) candidate \\$z{\\textbackslash}gtrsim 8\\$ LBGs identified over the 1.6 degrees\\${\\textasciicircum}2\\$ of the COSMOS/UltraVISTA field. These were identified as \\$Y\\$ and \\$J\\$ dropouts by leveraging the deep (\\$Y\\$-to-\\$K_{\\textbackslash}mathrm\\{S\\} {\\textbackslash}sim 25.6-25.2\\$\\textasciitildemag, \\$5{\\textbackslash}sigma\\$) NIR data from the UltraVISTA DR3 release, deep ground based optical imaging from the CFHTLS and Subaru Suprime Cam programs and Spitzer/IRAC mosaics combining observations from the SMUVS and SPLASH programs. Through the refined spectral energy distributions, which now also include new HyperSuprime Cam \\$g, r, i, z,\\$ and \\$Y\\$ band data, we confirm that 3/5 galaxies have robust \\$z_\\{phot\\}{\\textbackslash}sim8.0-8.7\\$, consistent with the initial selection. The remaining 2/5 galaxies have a nominal \\$z_\\{phot\\}{\\textbackslash}sim2\\$. However, if we use the HST data alone, these objects have increased probability of being at \\$z{\\textbackslash}sim9\\$. Furthermore, we measure mean UV continuum slopes \\${\\textbackslash}beta=-1.97{\\textbackslash}pm0.23\\$ for the three \\$z{\\textbackslash}sim8-9\\$ galaxies, marginally bluer than similarly luminous \\$z{\\textbackslash}sim4-6\\$ in CANDELS but consistent with previous measurements of similarly luminous galaxies at \\$z {\\textbackslash}sim 7\\$. The circularized effective radius for our brightest source is \\$0.9{\\textbackslash}pm0.2\\$ kpc, consistent with previous measurements for a bright \\$z{\\textbackslash}sim11\\$ galaxy and bright \\$z{\\textbackslash}sim7\\$ galaxies. Finally, using the \\$1/V_{\\textbackslash}mathrm\\{max\\}\\$ formalism, we estimate for the first time the volume density of the extreme bright (\\$M_{\\textbackslash}mathrm\\{UV\\}{\\textbackslash}lesssim -22\\$\\textasciitildemag) end of the \\$z{\\textbackslash}sim8\\$ UV LF from actual detection of sources, as opposed to current upper limits from non-detections. Despite this exceptional result, the still large statistical uncertainties do not allow us to discriminate between a Schechter and a double power-law form.","journal":"ArXiv e-prints","author":[{"propositions":[],"lastnames":["Stefanon"],"firstnames":["Mauro"],"suffixes":[]},{"propositions":[],"lastnames":["Labbé"],"firstnames":["Ivo"],"suffixes":[]},{"propositions":[],"lastnames":["Bouwens"],"firstnames":["Rychard","J."],"suffixes":[]},{"propositions":[],"lastnames":["Brammer"],"firstnames":["Gabriel","B."],"suffixes":[]},{"propositions":[],"lastnames":["Oesch"],"firstnames":["Pascal"],"suffixes":[]},{"propositions":[],"lastnames":["Franx"],"firstnames":["Marijn"],"suffixes":[]},{"propositions":[],"lastnames":["Fynbo"],"firstnames":["Johan","P.","U."],"suffixes":[]},{"propositions":[],"lastnames":["Milvang-Jensen"],"firstnames":["Bo"],"suffixes":[]},{"propositions":[],"lastnames":["Muzzin"],"firstnames":["Adam"],"suffixes":[]},{"propositions":[],"lastnames":["Illingworth"],"firstnames":["Garth","D."],"suffixes":[]},{"propositions":[],"lastnames":["Le","Fèvre"],"firstnames":["Olivier"],"suffixes":[]},{"propositions":[],"lastnames":["Caputi"],"firstnames":["Karina","I."],"suffixes":[]},{"propositions":[],"lastnames":["Holwerda"],"firstnames":["Benne","W."],"suffixes":[]},{"propositions":[],"lastnames":["McCracken"],"firstnames":["Henry","J."],"suffixes":[]},{"propositions":[],"lastnames":["Smit"],"firstnames":["Renske"],"suffixes":[]},{"propositions":[],"lastnames":["Magee"],"firstnames":["Dan"],"suffixes":[]}],"month":"June","year":"2017","keywords":"Astrophysics - Astrophysics of Galaxies","pages":"arXiv:1706.04613","bibtex":"@article{stefanon_hst_2017,\n\ttitle = {{HST} imaging of the brightest z{\\textasciitilde}8-9 galaxies from {UltraVISTA}: the extreme bright end of the {UV} luminosity function},\n\tvolume = {1706},\n\tshorttitle = {{HST} imaging of the brightest z{\\textasciitilde}8-9 galaxies from {UltraVISTA}},\n\turl = {http://adsabs.harvard.edu/abs/2017arXiv170604613S},\n\tabstract = {We report on the discovery of three especially bright candidate \n\\$z\\_\\{phot\\} {\\textbackslash}gtrsim 8\\$ galaxies. Five sources were targeted for follow-up\nwith HST/WFC3, selected from a larger sample of 16 bright (\\$24.8\n{\\textbackslash}lesssim H{\\textbackslash}lesssim25.5\\${\\textasciitilde}mag) candidate \\$z{\\textbackslash}gtrsim 8\\$ LBGs identified over\nthe 1.6 degrees\\${\\textasciicircum}2\\$ of the COSMOS/UltraVISTA field. These were\nidentified as \\$Y\\$ and \\$J\\$ dropouts by leveraging the deep\n(\\$Y\\$-to-\\$K\\_{\\textbackslash}mathrm\\{S\\} {\\textbackslash}sim 25.6-25.2\\${\\textasciitilde}mag, \\$5{\\textbackslash}sigma\\$) NIR data from the\nUltraVISTA DR3 release, deep ground based optical imaging from the\nCFHTLS and Subaru Suprime Cam programs and Spitzer/IRAC mosaics\ncombining observations from the SMUVS and SPLASH programs. Through the\nrefined spectral energy distributions, which now also include new\nHyperSuprime Cam \\$g, r, i, z,\\$ and \\$Y\\$ band data, we confirm that 3/5\ngalaxies have robust \\$z\\_\\{phot\\}{\\textbackslash}sim8.0-8.7\\$, consistent with the initial\nselection. The remaining 2/5 galaxies have a nominal \\$z\\_\\{phot\\}{\\textbackslash}sim2\\$.\nHowever, if we use the HST data alone, these objects have increased\nprobability of being at \\$z{\\textbackslash}sim9\\$. Furthermore, we measure mean UV\ncontinuum slopes \\${\\textbackslash}beta=-1.97{\\textbackslash}pm0.23\\$ for the three \\$z{\\textbackslash}sim8-9\\$ galaxies,\nmarginally bluer than similarly luminous \\$z{\\textbackslash}sim4-6\\$ in CANDELS but\nconsistent with previous measurements of similarly luminous galaxies at\n\\$z {\\textbackslash}sim 7\\$. The circularized effective radius for our brightest source\nis \\$0.9{\\textbackslash}pm0.2\\$ kpc, consistent with previous measurements for a bright\n\\$z{\\textbackslash}sim11\\$ galaxy and bright \\$z{\\textbackslash}sim7\\$ galaxies. Finally, using the\n\\$1/V\\_{\\textbackslash}mathrm\\{max\\}\\$ formalism, we estimate for the first time the volume\ndensity of the extreme bright (\\$M\\_{\\textbackslash}mathrm\\{UV\\}{\\textbackslash}lesssim -22\\${\\textasciitilde}mag) end of\nthe \\$z{\\textbackslash}sim8\\$ UV LF from actual detection of sources, as opposed to\ncurrent upper limits from non-detections. Despite this exceptional\nresult, the still large statistical uncertainties do not allow us to\ndiscriminate between a Schechter and a double power-law form.},\n\tjournal = {ArXiv e-prints},\n\tauthor = {Stefanon, Mauro and Labbé, Ivo and Bouwens, Rychard J. and Brammer, Gabriel B. and Oesch, Pascal and Franx, Marijn and Fynbo, Johan P. U. and Milvang-Jensen, Bo and Muzzin, Adam and Illingworth, Garth D. and Le Fèvre, Olivier and Caputi, Karina I. and Holwerda, Benne W. and McCracken, Henry J. and Smit, Renske and Magee, Dan},\n\tmonth = jun,\n\tyear = {2017},\n\tkeywords = {Astrophysics - Astrophysics of Galaxies},\n\tpages = {arXiv:1706.04613},\n}\n\n","author_short":["Stefanon, M.","Labbé, I.","Bouwens, R. J.","Brammer, G. B.","Oesch, P.","Franx, M.","Fynbo, J. P. U.","Milvang-Jensen, B.","Muzzin, A.","Illingworth, G. D.","Le Fèvre, O.","Caputi, K. I.","Holwerda, B. W.","McCracken, H. J.","Smit, R.","Magee, D."],"key":"stefanon_hst_2017","id":"stefanon_hst_2017","bibbaseid":"stefanon-labb-bouwens-brammer-oesch-franx-fynbo-milvangjensen-etal-hstimagingofthebrightestztextasciitilde89galaxiesfromultravistatheextremebrightendoftheuvluminosityfunction-2017","role":"author","urls":{"Paper":"http://adsabs.harvard.edu/abs/2017arXiv170604613S"},"keyword":["Astrophysics - Astrophysics of Galaxies"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/polyphant","dataSources":["7gvjSdWrEu7z5vjjj"],"keywords":["astrophysics - astrophysics of galaxies"],"search_terms":["hst","imaging","brightest","textasciitilde8","galaxies","ultravista","extreme","bright","end","luminosity","function","stefanon","labbé","bouwens","brammer","oesch","franx","fynbo","milvang-jensen","muzzin","illingworth","le fèvre","caputi","holwerda","mccracken","smit","magee"],"title":"HST imaging of the brightest z\\textasciitilde8-9 galaxies from UltraVISTA: the extreme bright end of the UV luminosity function","year":2017}