🇺🇦 #NowPlaying on KEXP's #Expansions
missing project:
🎵 Poisson D’Avril (Da’ Future Given a Deep Soul mix)
#missingproject
https://music-from-memory.bandcamp.com/track/missing-project-poisson-davril-galaxy-dub
https://open.spotify.com/track/0GCzWPpqnXqQ2THTB1eEM0
Skellow (adj.)
Descriptive of the satisfaction experienced when looking at a really good dry-stone wall.
Douglas Adams & John Lloyd, The Meaning of Liff https://tmoliff.blogspot.com/2012/09/skellow-adj.html
Morphology-spin connection in the SAMI Galaxy Survey
Youngmin Baek, Sree Oh, Sukyoung K. Yi, Scott M. Croom, Matthew Colless, Jesse van de Sande, Stefania Barsanti, Sam P. Vaughan
https://arxiv.org/abs/2607.18654 https://arxiv.org/pdf/2607.18654 https://arxiv.org/html/2607.18654
arXiv:2607.18654v1 Announce Type: new
Abstract: The spin parameter $\lambda_{\rm{R_e}}$ is a proxy for the specific stellar angular momentum of galaxies and is a useful metric for classifying kinematic morphology. This study aims to quantify the relative importance of galaxy properties in explaining $\lambda_{\rm{R_e}}$, using data from the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) Galaxy Survey. We apply partial correlation analysis and partial least squares regression to assess the relative contributions of different parameters in explaining $\lambda_{\rm{R_e}}$. We find that morphology indicators, bulge-to-total ratio within one effective radius ($B/T_\rm{e}$) and ellipticity ($\varepsilon_\rm{e}$), show the strongest correlations with $\lambda_{\rm{R_e}}$ and play a leading role in the regression analysis. This result statistically confirms the established fast-rotator sequence, in which fast-rotating early-type galaxies form a continuous structural and kinematic sequence with spiral galaxies, with $\lambda_{\rm{R_e}}$ decreasing as bulge prominence increases. The light-weighted age and stellar mass also exhibit significant correlations, but their contributions are secondary to the morphology indicators in multivariate analyses. We also examine whether the observed trends in $\lambda_{\rm{R_e}}$ can be reproduced using galaxy properties alone. The morphology indicators (${B/T_\rm{e}}$, $\varepsilon_\rm{e}$) reproduce the overall distribution of observed $\lambda_{\rm{R_e}}$ with a scatter of about 0.12, while the inclusion of Age_LW and $M_\star$ provides only modest additional improvement. However, these relations do not reproduce the slow-rotator regime well. Overall, our results show that photometric structural parameters best explain $\lambda_{\rm{R_e}}$ and suggest that statistical inference of galaxy spin from non-IFS observables may become feasible with improved models and a broader set of parameters.
toXiv_bot_toot
Genial: Der Tankrabatt soll gleich direkt an die Ölkonzerne überwiesen werden, die Autofahrer fallen als „unnötige Bürokratie" einfach weg. Bitterböse Pointe – denn dass der reale Rabatt kaum bei den Kunden ankommt, ist längst belegt. Satire, die trifft. @… #Tankrabatt #Wirtschaftspolitik #Satire https://www.der-postillon.com/2026/05/tankrabatt-direkt.html
Sonnet 022 - XXII
My glass shall not persuade me I am old,
So long as youth and thou are of one date;
But when in thee time's furrows I behold,
Then look I death my days should expiate.
For all that beauty that doth cover thee,
Is but the seemly raiment of my heart,
Which in thy breast doth live, as thine in me:
How can I then be elder than thou art?
O! therefore love, be of thyself so wary
As I, not for myself, but for thee wil…
The university has just declared that one of its three goals in the years to come is "Advancing responsible AI adoption at scale." These goals get written into every major project the university undertakes, including a large number faculty research proposals. For years to come, then, we're going to plow even more money and support into AI while neglecting those who refuse to engage. And don't be fooled - "responsible" here is veneer, signalling our apparent commit…
Save the Glasgow School of Art!
“to accept a diminished future for [The Mack] would show a worrying lack of cultural confidence. When Notre-Dame burned, Paris didn’t scale down its ambition. Paris came out stronger afterwards.”
Sonnet 126 - CXXVI
O thou, my lovely boy, who in thy power
Dost hold Time's fickle glass, his sickle, hour;
Who hast by waning grown, and therein showest
Thy lovers withering, as thy sweet self growest.
If Nature, sovereign mistress over wrack,
As thou goest onwards still will pluck thee back,
She keeps thee to this purpose, that her skill
May time disgrace and wretched minutes kill.
Yet fear her, O thou minion of her pleasure!
…
The environmental dependence of the circumgalactic medium in a high-resolution cosmological simulation
Georg Herzog, Rajeshwari Dutta, Michele Fumagalli
https://arxiv.org/abs/2609.08654 https://arxiv.org/pdf/2609.08654 https://arxiv.org/html/2609.08654
arXiv:2609.08654v1 Announce Type: new
Abstract: There is increasing evidence from observations that the circumgalactic medium (CGM) of galaxies depends on the large-scale structure in which they are embedded. When probing the CGM in absorption using quasar sightlines, studies find an enhanced sky coverage in the CGM of galaxies in overdensities compared to galaxies in isolation. However, the exact reason for this environmental dependence is still unclear. In this work we aim to model for the first time the influence of the large-scale structure on the cool and warm ($T\sim10^{4-5}$ K) gas phases of the CGM. We use a high-resolution ($m_{gas}\approx 4.5\times 10^4$ M$_{\odot}$, $m_{dm}\approx 2.4\times 10^5$ M$_{\odot}$) cosmological simulation based on the EAGLE model of galaxy formation. We select all galaxies at $z=0$ with stellar mass $M_*>10^8$ M$_\odot$ and split them into galaxies in overdensities (group galaxies) and galaxies in isolation using a Friends-of-Friends algorithm. For these two samples, we investigate how the large-scale structure influences the physical properties of the CGM and the measured covering fractions of the cool and warm gas phases. When the two samples of group and isolated galaxies are matched in stellar mass, halo mass, and we use only central galaxies, we do not find any significant difference in the physical properties of the CGM and the measured covering fractions. However, when satellite galaxies are included, we recover the observational trends in the difference of covering fractions with the environment. The difficulty of recovering the observational trends shows the complexity of capturing the multiphase CGM in simulations. However, since our results concerning the admixture of satellites are independent of the employed subgrid physics, this work shows that central galaxies and satellites need to be disentangled in observational studies to clearly discern the role of the environment on the CGM.
toXiv_bot_toot