%0 Generic %1 bouwens2015luminous %A Bouwens, R. J. %A Oesch, P. A. %A Labbe, I. %A Illingworth, G. D. %A Fazio, G. %A Coe, D. %A Holwerda, B. %A Smit, R. %A Stefanon, M. %A van Dokkum, P. G. %A Trenti, M. %A Ashby, M. %A Huang, J. %A Spitler, L. %A Straatman, C. %A Bradley, L. %A Magee, D. %D 2015 %K function galaxy high-z luminousity %T Most Luminous z=9-10 Galaxies: A First Determination of the Bright End of the z~9 and z~10 UV Luminosity Functions using all five CANDELS Fields %U http://arxiv.org/abs/1506.01035 %X The deep, wide-area (900 arcmin**2) near-IR/WFC3/IR + Spitzer/IRAC observations over the CANDELS program represents a significant resource for constraining the bright end of the z~9 and z~10 luminosity functions (LFs) in the UV. We recently reported the discovery of 6 luminous z~9-10 candidates over the GOODS-North+South fields, but extending this search to the full CANDELS program was limited due to the lack of HST-depth 1.05-micron observations in the other 3 CANDELS fields. Here we attempt to significantly realize the potential of CANDELS for z=9-10 science by combining a search over all 5 fields with results from a new HST program (B9-CANDELS) designed to follow up the highest-probability z~9-10 galaxy candidates with observations at 1.05 microns. The targeted z~9-10 candidates are preselected by taking advantage of the full HST, Spitzer/IRAC S-CANDELS observations, and the deepest-available ground-based optical+near-IR observations. With our follow-up program now 91% complete, we identify 4 new high-probability z~9-10 galaxies. This brings our total sample of bright z~9-10 galaxies to 14, including several other new sources from the CANDELS GOODS + ERS fields.Through extensive simulations, we replicate the selection process for our sample (both the preselection and follow-up) and obtain an accurate estimate of the volume density of bright galaxies (M_UV,AB<-20) at both z~9 and z~10. The volume density of bright z~9 and z~10 galaxies that we find is 4.5(-1.3)(+2.5)x and 8(-3)(+7)x lower than found at z~8. When compared with the best-fit evolution in the UV luminosities densities from z~8 to z~4 (>0.4L*), the luminosity densities we find at z~9 and z~10 are ~2x lower than the extrapolated trends. We would expect significant additional gains in these results from the on-going 500-orbit BoRGz910 program and by obtaining additional follow-up observations over the CANDELS-WIDE fields.

@misc{bouwens2015luminous, abstract = {The deep, wide-area (900 arcmin**2) near-IR/WFC3/IR + Spitzer/IRAC observations over the CANDELS program represents a significant resource for constraining the bright end of the z~9 and z~10 luminosity functions (LFs) in the UV. We recently reported the discovery of 6 luminous z~9-10 candidates over the GOODS-North+South fields, but extending this search to the full CANDELS program was limited due to the lack of HST-depth 1.05-micron observations in the other 3 CANDELS fields. Here we attempt to significantly realize the potential of CANDELS for z=9-10 science by combining a search over all 5 fields with results from a new HST program (B9-CANDELS) designed to follow up the highest-probability z~9-10 galaxy candidates with observations at 1.05 microns. The targeted z~9-10 candidates are preselected by taking advantage of the full HST, Spitzer/IRAC S-CANDELS observations, and the deepest-available ground-based optical+near-IR observations. With our follow-up program now 91% complete, we identify 4 new high-probability z~9-10 galaxies. This brings our total sample of bright z~9-10 galaxies to 14, including several other new sources from the CANDELS GOODS + ERS fields.Through extensive simulations, we replicate the selection process for our sample (both the preselection and follow-up) and obtain an accurate estimate of the volume density of bright galaxies (M_{UV,AB}<-20) at both z~9 and z~10. The volume density of bright z~9 and z~10 galaxies that we find is 4.5(-1.3)(+2.5)x and 8(-3)(+7)x lower than found at z~8. When compared with the best-fit evolution in the UV luminosities densities from z~8 to z~4 (>0.4L*), the luminosity densities we find at z~9 and z~10 are ~2x lower than the extrapolated trends. We would expect significant additional gains in these results from the on-going 500-orbit BoRG[z910] program and by obtaining additional follow-up observations over the CANDELS-WIDE fields.}, added-at = {2015-06-04T10:22:36.000+0200}, author = {Bouwens, R. J. and Oesch, P. A. and Labbe, I. and Illingworth, G. D. and Fazio, G. and Coe, D. and Holwerda, B. and Smit, R. and Stefanon, M. and van Dokkum, P. G. and Trenti, M. and Ashby, M. and Huang, J. and Spitler, L. and Straatman, C. and Bradley, L. and Magee, D.}, biburl = {https://www.bibsonomy.org/bibtex/29c37eed3503c03c093710c8e366cd814/miki}, description = {[1506.01035] Most Luminous z=9-10 Galaxies: A First Determination of the Bright End of the z~9 and z~10 UV Luminosity Functions using all five CANDELS Fields}, interhash = {55b97085c16c229cc01724923c8af97e}, intrahash = {9c37eed3503c03c093710c8e366cd814}, keywords = {function galaxy high-z luminousity}, note = {cite arxiv:1506.01035Comment: 22 pages, 14 figures, 6 tables, submitted to the Astrophysical Journal}, timestamp = {2015-06-04T10:22:36.000+0200}, title = {Most Luminous z=9-10 Galaxies: A First Determination of the Bright End of the z~9 and z~10 UV Luminosity Functions using all five CANDELS Fields}, url = {http://arxiv.org/abs/1506.01035}, year = 2015 }