Plot showing the orbits of known Galactic satellite galaxies and a representative sample of dark subhalos
🔭 Can you build a snail using dark matter? Sounds like something my nephew might ask, but also the question Gilman et al ask, with maybe my favourite plot of the year arxiv.org/abs/2412.02757 #arXivoftheweek 🔭
🔭 How can we unravel the merger history of the Milky Way? Viterbo & Buck explore the use of simulation-based inference on measured stellar chemical abundances arxiv.org/abs/2411.17269 #arXivoftheweek 🔭 1/6
alpha/Fe plots as a function of Galactocentric X & Y from Barbillon et al's paper.
🔭 The spiral arms as you've never seen them before! Barbillon explore their signature in alpha-elements (i.e., the ones primarily produced by young massive stars exploding near their formation sites) #arxivoftheweek arxiv.org/abs/2411.10007 🔭
I try, once a week, to pick a paper from arXiv and write about it (a summary, with at least one thought it provoked). It's an exercise that I use to keep me reading papers and I hope it's something people find interesting. I tag them #arxivoftheweek
An all-sky image of the Milky Way constructed by Kesküla & Kesküla 1953-55, kindly provided by Lund Observatory
🔭 Why are you so cool? That's what Hamilton et al are asking the Milky Way's disc (arxiv.org/abs/2411.08944) in my #arXivoftheweek . It is really cool, I mean just look at it! 1/N 🔭
Some programming notes: I missed a couple of #arXivoftheweek weeks. Such is life. And could people stop publishing so many interesting papers? There were at least 5 yesterday that I want to read carefully.
Full sample in R-z
🔭 Two things dear to my heart: The structure of the Milky Way, and selection functions! Khanna et al. trace the old (?) stellar disc of the Milky Way in my #arXivoftheweek arxiv.org/abs/2410.22036 1/7
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🔭 A quick #arXivoftheweek from my former Lund Observatory comrade-in-arms Florent Renaud et al. looking at metallicity gradients in a simulated Milky-Way-like disc arxiv.org/abs/2409.10598 🔭
Plot from Cavieres et al
🔭 Cavieres et al. felt a great disturbance in the Milky Way's halo, as if millions of stars (not very) suddenly felt the pull of the LMC, and were (not very) suddenly moved around the Milky Way #arXivoftheweek arxiv.org/abs/2410.00114 🔭
The warp in data and simulation
🔭 It is, topically, return of the #sausages for an #arXivoftheweek. Deng et al. look at whether the last major merger with the Milky Way created not only the unfortunately named Gaia-Sausage-Enceladus debris but also the Galactic warp. 🔭
🔭 How do star's orbits change with age? Garzon et al look at stars younger than 500Myr to try and understand this using the vertical action, Jz, to characterise the heating #arXivoftheweek arxiv.org/abs/2407.07323 🔭
Spiral perturbations as background to epicycle motion
🔭 "Galactokinetics" is the topic of the Hamilton et al. paper I've looked at as an #arXivoftheweek. What is it? A framework for analytical modelling of galactic disc disturbances arxiv.org/abs/2408.03366 🔭
🔭 The ancient accretion of a dwarf galaxy, and the way that its stars still move together, may give a clear indication of the structure of the Milky Way's dark-matter halo, so say Woudenberg & Helmi in my #arXivoftheweek arxiv.org/abs/2407.21790
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An iron snail shell
🔭 A fun paper title (and my favourite wrestler), the 'iron snail' is the topic of Neige Frankel et al's paper about the best way to investigate the disturbance of the Milky Way's disc arxiv.org/abs/2407.07149 #arXivoftheweek 🔭
z coordinate of stars changing with time
🔭 Can the bar drag metal-poor halo stars onto disc-like orbits? My #arXivoftheweek paper asks the question, and Li et al say yes
arxiv.org/abs/2406.06716 1/6 🔭
velocities of stars in the outer halo
🔭 I'm heading to the outer Milky Way for an #arXivoftheweek: Chandra et al measuring the Milky Way's response to the pull of the Large Magellanic Cloud (arxiv.org/abs/2406.01676) [1/6] 🔭
Plot show the warp of the Milky Way as f(X,Y)
🔭 I want to talk about this brilliant paper about the Milky Way's warp led by a student, Mauro Cabrera-Gadea, using Cepheid variables to study its shape and motion. I want to restart my #arxivoftheweek and I'm way behind, so this counts! arxiv.org/abs/2401.13736 1/5 🔭
