Matches in SemOpenAlex for { <https://semopenalex.org/work/W2945288923> ?p ?o ?g. }
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- W2945288923 abstract "We constrain the distribution of spatially offset Lyman-alpha emission (Ly$alpha$) relative to rest-frame ultraviolet emission in $sim300$ high redshift ($3<z<5.5$) Lyman-break galaxies (LBGs) exhibiting Ly$alpha$ emission from VANDELS, a VLT/VIMOS slit-spectroscopic survey of the CANDELS Ultra Deep Survey and Chandra Deep Field South fields (${simeq0.2}~mathrm{deg}^2$ total). Because slit spectroscopy compresses two-dimensional spatial information into one spatial dimension, we use Bayesian inference to recover the underlying Ly$alpha$ spatial offset distribution. We model the distribution using a 2D circular Gaussian, defined by a single parameter $sigma_{r,mathrm{Ly}alpha}$, the standard deviation expressed in polar coordinates. Over the entire redshift range of our sample ($3<z<5.5$), we find $sigma_{r,mathrm{Ly}alpha}=1.70^{+0.09}_{-0.08}$ kpc ($68%$ conf.), corresponding to $sim0.25$ arcsec at $langle zrangle=4.5$. We also find that $sigma_{r,mathrm{Ly}alpha}$ decreases significantly with redshift. Because Ly$alpha$ spatial offsets can cause slit-losses, the decrease in $sigma_{r,mathrm{Ly}alpha}$ with redshift can partially explain the increase in the fraction of Ly$alpha$ emitters observed in the literature over this same interval, although uncertainties are still too large to reach a strong conclusion. If $sigma_{r,mathrm{Ly}alpha}$ continues to decrease into the reionization epoch, then the decrease in Ly$alpha$ transmission from galaxies observed during this epoch might require an even higher neutral hydrogen fraction than what is currently inferred. Conversely, if spatial offsets increase with the increasing opacity of the IGM, slit losses may explain some of the drop in Ly$alpha$ transmission observed at $z>6$. Spatially resolved observations of Ly$alpha$ and UV continuum at $6<z<8$ are needed to settle the issue." @default.
- W2945288923 created "2019-05-29" @default.
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- W2945288923 date "2019-07-01" @default.
- W2945288923 modified "2023-10-13" @default.
- W2945288923 title "Constraining Lyman-alpha spatial offsets at 3 < z < 5.5 from VANDELS slit spectroscopy" @default.
- W2945288923 cites W1525855014 @default.
- W2945288923 cites W1554821233 @default.
- W2945288923 cites W1611044294 @default.
- W2945288923 cites W1622230873 @default.
- W2945288923 cites W1761778139 @default.
- W2945288923 cites W1896145611 @default.
- W2945288923 cites W1932159333 @default.
- W2945288923 cites W1984973575 @default.
- W2945288923 cites W1986058774 @default.
- W2945288923 cites W1987593564 @default.
- W2945288923 cites W1994671833 @default.
- W2945288923 cites W2001084967 @default.
- W2945288923 cites W2005411300 @default.
- W2945288923 cites W2024175772 @default.
- W2945288923 cites W2035877537 @default.
- W2945288923 cites W2036036577 @default.
- W2945288923 cites W2043235658 @default.
- W2945288923 cites W2053342159 @default.
- W2945288923 cites W2072053764 @default.
- W2945288923 cites W2073357077 @default.
- W2945288923 cites W2074497567 @default.
- W2945288923 cites W2077504681 @default.
- W2945288923 cites W2084780057 @default.
- W2945288923 cites W2086315088 @default.
- W2945288923 cites W2094871238 @default.
- W2945288923 cites W2097319101 @default.
- W2945288923 cites W2099390755 @default.
- W2945288923 cites W2101831052 @default.
- W2945288923 cites W2107139935 @default.
- W2945288923 cites W2109062722 @default.
- W2945288923 cites W2132500362 @default.
- W2945288923 cites W2137867455 @default.
- W2945288923 cites W2151062050 @default.
- W2945288923 cites W2151570583 @default.
- W2945288923 cites W2153555715 @default.
- W2945288923 cites W2153610806 @default.
- W2945288923 cites W2168893352 @default.
- W2945288923 cites W2170168222 @default.
- W2945288923 cites W2301777650 @default.
- W2945288923 cites W2325296095 @default.
- W2945288923 cites W2332378549 @default.
- W2945288923 cites W2413278594 @default.
- W2945288923 cites W2537447338 @default.
- W2945288923 cites W2751490122 @default.
- W2945288923 cites W2756436221 @default.
- W2945288923 cites W2794016571 @default.
- W2945288923 cites W2795488789 @default.
- W2945288923 cites W2886155453 @default.
- W2945288923 cites W2894083637 @default.
- W2945288923 cites W2914868010 @default.
- W2945288923 cites W2949979621 @default.
- W2945288923 cites W2951385617 @default.
- W2945288923 cites W2962908118 @default.
- W2945288923 cites W2964323761 @default.
- W2945288923 cites W2998991332 @default.
- W2945288923 cites W3098419823 @default.
- W2945288923 cites W3099950482 @default.
- W2945288923 cites W3100735853 @default.
- W2945288923 cites W3101362155 @default.
- W2945288923 cites W3101455189 @default.
- W2945288923 cites W3102014803 @default.
- W2945288923 cites W3102047411 @default.
- W2945288923 cites W3102689846 @default.
- W2945288923 cites W3103400488 @default.
- W2945288923 cites W3103789480 @default.
- W2945288923 cites W3103799879 @default.
- W2945288923 cites W3104697976 @default.
- W2945288923 cites W3104887482 @default.
- W2945288923 cites W3104906118 @default.
- W2945288923 cites W3104952754 @default.