text:   fluctuations",10,"['🚨PAPER ALERT🚨 \n\nHow far is a galaxy? Almost everything we want to know about it depends on the answer. In our new paper, we take a deep dive into the theory and feasibility of measuring distances to diffuse dwarf galaxies using *imaging data alone*: <LINK> <LINK>', 'We use surface brightness fluctuations, which arise from pixel-to-pixel Poisson fluctuations in the number of bright stars in a galaxy image. The more distant the galaxy, the smaller the fluctuations. The effect is shown in this fig. Ω = resolution element. #DistancesAreHard https://t.co/cOzrXKbgKJ', ""@rareflwr41 For you, anything🙂here's another: https://t.co/7C7ILHnGR2"", 'We compare our calculations to observations of dwarf galaxies with independent distance measurements based on the TRGB. Single-age stellar pop models are in good agreement with red dwarfs, but blue dwarfs are more consistent with composite stellar pop models. #DistancesAreHard https://t.co/Ba9ov8xSQQ', 'To study SBF in practice, we inject artificial galaxies star-by-star into images from the #HyperSuprimeCam survey using one of my favorite tools: #ArtPop! @DanieliShany #DistancesAreHard \n\n👇👇👇👇\n\nhttps://t.co/Phq6a86JjG', 'There’s more, but I’ll end with an exciting plot for the future. LSST will be capable of measuring SBF distances to dwarf galaxies out to ~25 Mpc! HUGE thanks to my amazing collaborators @DokkumPieter, @DanieliShany, Scott Carlsten, and Charlie Conroy! https://t.co/YKYKw12onM https://t.co/ZgzMNjKsPi', '@dstndstn Thanks, Dustin! That means a lot coming from you. \n\nNot naive all -- You want as many resolution elements as possible, so my expectation is that you want GOOD seeing (and you need to understand your PSF). And for the regime we are interested in, we are already short on pixels!', '@BenneHolwerda https://t.co/cEsKO4zgnC', '@BenneHolwerda You mean for the gif? I certainly can! @rareflwr41 wanted one too, so I can make a higher resolution version and put it somewhere public. But we are working on making ArtPop open source sometime soon-ish so you can make one too!', '@JohnFeldmeier Thank you 🙏']",20,04,1930