text: 206,137,1435891550303793152,494212643,Aayush Saxena,"After over a year of being in the works (counting the pandemic), I'm excited that our paper reporting the discovery of 11 new spectroscopically confirmed candidate Lyman continuum (LyC) leakers in the GOODS-S field is out now! <LINK> Short thread below (1/5) We use ground based LyC imaging and compile spectra from publicly available surveys, mainly from VANDELS (LBGs) and MUSE (blind) to measure the LyC escape fractions. only 6% of galaxies have any LyC leakage, with the majority of the sample giving an upper limit of fesc&lt;7% (2/5) Interestingly, we do not find any strong dependence of the measured LyC escape fraction for 11 new candidate leakers on their stellar masses or specific star-formation rates, as can be seen in the plots below: (3/5) <LINK> At these redshifts, the [OIII]+Hb lines fall in the observed K band, and we measure these line strengths by including nebular emission in SED fitting. Once again, no strong dependence of fesc is found on the [OIII]+Hb line strengths: (4/5) <LINK> It remains observationally unclear which physical property regulates high LyC leakage. We argue that orientation and timescales may play a role in actually detecting LyC leakage, and the presence of young clusters within galaxies could be important. (5/5) @jorryt_m Cheers! Typical MUV is ~ -21, so comparable to Steidel+2018 I'd say and its encouraging to get similar results. Indeed IGM stochasticity may play a role in masking correlations, which we touch upon in the paper too! @astrobellatrix Ooh so sorry about that -including MUSE redshifts thanks to your and your team's amazing work was just too tempting ;) I hope we'll arrive at similar conclusions and will keep an eye out on your results too! Thanks :) @astrobellatrix Yes that was a really cool paper. MUSE results are generally absolutely fantastic I must say! @maximetrebitsch That is an excellent point actually - we haven't explored the dust content angle here, but it is indeed something that could definitely play a role in an orientation-based scenario... Kind of similar to IGM stochasticity in effect(?) More zoom-in simulations please!!",https://arxiv.org/abs/2109.03662,"We present Lyman continuum (LyC) radiation escape fraction $f_{\rm{esc}}$ measurements for 183 spectroscopically confirmed star-forming galaxies in the redshift range $3.11 < z < 3.53$ in the \textit{Chandra} Deep Field South. We use ground-based imaging to measure $f_{\rm{esc}}$, and use ground- and space-based photometry to derive galaxy physical properties using spectral energy distribution (SED) fitting. We additionally derive [O III]+H$\beta$ equivalent widths (that fall in the observed K band) by including nebular emission in the SED fitting. After removing foreground contaminants, we report the discovery of 11 new candidate LyC leakers, with absolute LyC escape fractions, $f_{\rm{esc}}$ in the range $0.14-0.85$. From non-detections, we place $1\sigma$ upper limits of $f_{\rm{esc}}<0.12$, where the Lyman-break selected galaxies have $f_{\rm{esc}} < 0.11$ and `blindly' discovered galaxies with no prior photometric selection have $f_{\rm{esc}}<0.13$. We find a slightly higher $1\sigma$ limit of $f_{\rm{esc}}<0.20$ for extreme emission line galaxies with rest-frame [O III]+H$\beta$ equivalent widths $>300$A. For candidate LyC leakers, we find a weak negative correlation between $f_{\rm{esc}}$ and galaxy stellar masses, no correlation between $f_{\rm{esc}}$ specific star-formation rates (sSFRs) and a positive correlation between $f_{\rm{esc}}$ and EW$_0$([O III]+H$\beta$). The weak/no correlations between stellar mass and sSFRs may be explained by misaligned viewing angles and/or non-coincident timescales of starburst activity and periods of high $f_{\rm{esc}}$. Alternatively, escaping radiation may predominantly occur in highly localised star-forming regions, or $f_{\rm{esc}}$ measurements may be impacted by stochasticity of the intervening neutral medium, obscuring any global trends with galaxy properties. These hypotheses have important consequences for models of reionisation. ","No strong dependence of Lyman continuum leakage on physical properties