%0 Generic %1 cornachione2017emissionline %A Cornachione, Matthew %A Bolton, Adam %A Shu, Yiping %A Zheng, Zheng %A Montero-Dorta, Antonio D. %A Brownstein, Joel R. %A Oguri, Masamune %A Kochanek, Christopher S. %A Mao, Shude %A Perez-Fournon, Ismael %A Marques-Chaves, Rui %A Menard, Brice %D 2017 %K LAE clumps emission line %T The BOSS Emission-Line Lens Survey V. Morphology and Substructure of Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY %U http://arxiv.org/abs/1708.08854 %X We present a morphological study of the 17 lensed Lyman-$\alpha$ emitter (LAE) galaxies of the Baryon Oscillation Spectroscopic Survey Emission-Line Lens Survey (BELLS) for the GALaxy-Ly$\alpha$ EmitteR sYstems (BELLS GALLERY) sample. This analysis combines the magnification effect of strong galaxy-galaxy lensing with the high resolution of the Hubble Space Telescope ($HST$) to achieve a physical resolution of $\sim$80 pc for this $2<z<3$ LAE sample, allowing a detailed characterization of the LAE rest-frame ultraviolet continuum surface brightness profiles and substructure. We use lens-model reconstructions of the LAEs to identify and model individual clumps, which we subsequently use to constrain the parameters of a generative statistical model of the LAE population. Since the BELLS GALLERY sample is selected primarily on the basis of Lyman-$\alpha$ emission, the LAEs that we study here are likely to be directly comparable to those selected in wide-field narrow-band LAE surveys, in contrast with the lensed LAEs identified in cluster lensing fields. We find an LAE clumpiness fraction of approximately 88%, significantly higher than found in previous (non-lensing) studies. We find a well-resolved characteristic clump half-light radii of $\sim$350 pc, a scale comparable to the largest H II regions seen in the local universe. This statistical characterization of LAE surface-brightness profiles will be incorporated into future lensing analyses using the BELLS GALLERY sample to constrain the incidence of dark-matter substructure in the foreground lensing galaxies.

@misc{cornachione2017emissionline, abstract = {We present a morphological study of the 17 lensed Lyman-$\alpha$ emitter (LAE) galaxies of the Baryon Oscillation Spectroscopic Survey Emission-Line Lens Survey (BELLS) for the GALaxy-Ly$\alpha$ EmitteR sYstems (BELLS GALLERY) sample. This analysis combines the magnification effect of strong galaxy-galaxy lensing with the high resolution of the Hubble Space Telescope ($HST$) to achieve a physical resolution of $\sim$80 pc for this $2<z<3$ LAE sample, allowing a detailed characterization of the LAE rest-frame ultraviolet continuum surface brightness profiles and substructure. We use lens-model reconstructions of the LAEs to identify and model individual clumps, which we subsequently use to constrain the parameters of a generative statistical model of the LAE population. Since the BELLS GALLERY sample is selected primarily on the basis of Lyman-$\alpha$ emission, the LAEs that we study here are likely to be directly comparable to those selected in wide-field narrow-band LAE surveys, in contrast with the lensed LAEs identified in cluster lensing fields. We find an LAE clumpiness fraction of approximately 88%, significantly higher than found in previous (non-lensing) studies. We find a well-resolved characteristic clump half-light radii of $\sim$350 pc, a scale comparable to the largest H II regions seen in the local universe. This statistical characterization of LAE surface-brightness profiles will be incorporated into future lensing analyses using the BELLS GALLERY sample to constrain the incidence of dark-matter substructure in the foreground lensing galaxies.}, added-at = {2017-08-30T10:02:18.000+0200}, author = {Cornachione, Matthew and Bolton, Adam and Shu, Yiping and Zheng, Zheng and Montero-Dorta, Antonio D. and Brownstein, Joel R. and Oguri, Masamune and Kochanek, Christopher S. and Mao, Shude and Perez-Fournon, Ismael and Marques-Chaves, Rui and Menard, Brice}, biburl = {https://www.bibsonomy.org/bibtex/2912f52eb1b44bb09927bace55d9dc4de/miki}, description = {[1708.08854] The BOSS Emission-Line Lens Survey V. Morphology and Substructure of Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY}, interhash = {e711744a00ff18dae5fe9d792d7abcd8}, intrahash = {912f52eb1b44bb09927bace55d9dc4de}, keywords = {LAE clumps emission line}, note = {cite arxiv:1708.08854Comment: 12 pages, 5 figures}, timestamp = {2017-08-30T10:02:18.000+0200}, title = {The BOSS Emission-Line Lens Survey V. Morphology and Substructure of Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY}, url = {http://arxiv.org/abs/1708.08854}, year = 2017 }