text: 265,202,1252978714784251904,953616889,Justin Read,"Another fantastic paper from Martin Rey and the EDGE collaboration out today! We find that isolated low mass dwarf galaxies can grow in mass to accrete gas and reignite their star formation after reionisation: <LINK> [1/3] We predict that at M200~3e9 Msun, dwarfs will transition from being gas rich quiescent ""ultra-faints"" to ""Leo-T""-like dwarfs that form stars at a rate of just ~1e-5 Msun/year! [2/3] <LINK> This may solve a long-standing puzzle as to how galaxies like Leo-T survive reionisation to remain star forming today. If so, a population of ""gas rich ultra-faints"" will be uncovered by up-coming surveys. Indeed, some may have already been found: <LINK> [3/3]",https://arxiv.org/abs/2004.09530v1,"We study how star formation is regulated in low-mass field dwarf galaxies ($10^5 \leq M_{\star} \leq 10^6 \, \text{M}_{\odot}$), using cosmological high-resolution ($3 \, \text{pc}$) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of $3 \times 10^{9} \,\text{M}_{\odot}$ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies re-ignite and sustain star formation until the present day at an average rate of $10^{-5} \, \text{M}_{\odot} \, \text{yr}^{-1}$, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at $z=0$, the third galaxy remains in a temporary equilibrium with a large gas content but without any ongoing star formation. Using the ""genetic modification'' approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small $(0.2\,\mathrm{dex})$ increase in dynamical mass can overcome residual stellar feedback, re-igniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation HI and imaging surveys. ",] EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies,3,"['Another fantastic paper from Martin Rey and the EDGE collaboration out today! We find that isolated low mass dwarf galaxies can grow in mass to accrete gas and reignite their star formation after reionisation:\n\n<LINK>\n\n[1/3]', 'We predict that at M200~3e9 Msun, dwarfs will transition from being gas rich quiescent ""ultra-faints"" to ""Leo-T""-like dwarfs that form stars at a rate of just ~1e-5 Msun/year!\n\n[2/3] https://t.co/M1PKu8tFCB', 'This may solve a long-standing puzzle as to how galaxies like Leo-T survive reionisation to remain star forming today. If so, a population of ""gas rich ultra-faints"" will be uncovered by up-coming surveys. Indeed, some may have already been found:\n\nhttps://t.co/YWrr1djLFL\n\n[3/3]']",20,04,672