Journal article
THE GRISM LENS-AMPLIFIED SURVEY FROM SPACE (GLASS). III. A CENSUS OF Lyα EMISSION AT z ≳ 7 FROM HST SPECTROSCOPY
KB Schmidt, T Treu, M Bradač, B Vulcani, KH Huang, A Hoag, M Maseda, L Guaita, L Pentericci, GB Brammer, M Dijkstra, A Dressler, A Fontana, AL Henry, TA Jones, C Mason, M Trenti, X Wang
Astrophysical Journal | Published : 2016
Abstract
We present a census of Lyα emission at z ≳ 7, utilizing deep near-infrared Hubble Space Telescope grism spectroscopy from the first six completed clusters of the Grism Lens-Amplified Survey from Space (GLASS). In 24/159 photometrically selected galaxies we detect emission lines consistent with Lyα in the GLASS spectra. Based on the distribution of signal-to-noise ratios and on simulations, we expect the completeness and the purity of the sample to be 40%-100% and 60%-90%, respectively. For the objects without detected emission lines we show that the observed (not corrected for lensing magnification) 1σ flux limits reach 5 × 10-18 erg s-1 cm-2 per position angle over the full wavelength range..
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Awarded by Astrobiology Centre Project of National Institutes of Natural Sciences (NINS)
Funding Acknowledgements
We thank Kevin Walsh for providing us with SyMBA, including a Grand Tack model. We thank the anonymous referee for the careful reading and comments. S.M. thanks Prof. Bill McDonough, Prof. Qing-Zhu Yin, and Prof. Yuri Aikawa for useful discussions. S.M. is thankful for the support provided by the Kavli Institute for Theoretical Physics in the United States and the Earth-Life Science Institute in Japan, where some parts of this work were done, and a support from the Northern Research Partnership. R.B. is supported by the Astrobiology Centre Project of National Institutes of Natural Sciences (NINS) (Grant Number AB271017).