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#disks

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#ALMA 2D #SuperResolution imaging survey of Ophiuchus Class I/flat spectrum/II #disks - discovery of new disk substructures: academic.oup.com/pasj/article/ -> New Super-resolution Imaging Reveals the First Step of Planet Formation after Star Birth / New Insights into Planet Formation from Public Data with New Imaging Technique: alma-telescope.jp/en/news/pres / nao.ac.jp/en/news/science/2025

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO) - Program Overview and Summary of First Results & many more papers: arxiv.org/abs/2506.10719 & agepro.das.uchile.cl/publicati -> #ALMA Reveals Lives of Planet-Forming #Disks: public.nrao.edu/news/alma-plan & news.wisc.edu/measuring-gases- & almaobservatory.org/en/press-r - observations of 30 disks change our understanding of the evolution of gas in the birthplace of #exoplanets.

arXiv.orgThe ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): I. Program Overview and Summary of First ResultsWe present the ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO), a Large Program of the Atacama Large Millimeter/submillimeter Array (ALMA). AGE-PRO aims to systematically trace the evolution of gas disk mass and size throughout the lifetime of protoplanetary disks. It uses a carefully selected sample of 30 disks around M3-K6 stars in three nearby star-forming regions: Ophiuchus (0.5-1 Myr), Lupus (1-3 Myr), and Upper Sco (2-6 Myr). Assuming the three regions had similar initial conditions and evolutionary paths, we find the median gas disk mass appears to decrease with age. Ophiuchus disks have the highest median gas mass (6 M$_{\rm Jup}$), while the Lupus and Upper Sco disks have significantly lower median masses (0.68 and 0.44 M$_{\rm Jup}$, respectively). Notably, the gas and dust disk masses appear to evolve on different timescales. This is evidenced by the median gas-to-dust mass ratio, which decreases from 122 in the youngest disks ($<$1 Myr) to 46 in Lupus disks, and then increases to 120 in the Upper Sco disks. The median gas disk sizes range between 74-110 au, suggesting that typical gas disks are much smaller than those of well-studied, massive disks. Population synthesis models suggest that magneto-hydrodynamic wind-driven accretion can reproduce median disk properties across all three regions, when assuming compact disks with a declining magnetic field over time. In contrast, turbulent-driven models overestimate gas masses of $>$1 Myr disks by an order of magnitude. Here we discuss the program's motivation, survey design, sample selection, observation and data calibration processes, and highlight the initial results.

ADFDiskBox is a graphical user interface for the Greaseweazle Host Tools for Windows and is intended to simplify the reading and writing of Amiga discs and disc images (ADF, SCP:AmigaDOS, RawSCP). Version 2.4 adds an options form to declutter the main form, changes the disk type names and adds a button to load the HxC Software.

amiga-news.de/en/news/AN-2025-

www.amiga-news.deamiga-news.de - Windows: GUI for Greaseweazle Tools - ADFDiskBox 2.4
#Windows#Amiga#disks

My experience with #FlashDrives recently has been mixed. I have no problem in encrypting them with #LUKS, using #cryptsetup or with formatting a partition with #Btrfs, for instance, using #gparted and doing other tinkering with #Gnome #disks. But the problem has been with the actual drives themselves. The cheaper ones seem to have quite a few bad sectors, etc. and so they’re not really reliable for medium term storage.

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I wonder if anyone can help me with a #Linux #USB issue. I’ve got a new flash drive on which I want to put a Linux directory structure on {with #EXT4, encrypted if possible). However, using the #GNOME #disks utility to #Format it apparently works but when I go into the disk’s root directory, I can’t create any files – I get an input/output error. If I reformat the disk as a #FAT (windows(disk then it works again and so I’m thinking there must be some problem with the utility I’m using.

I'm in the near future going to be assembling an extreme budget homelab NAS. Due to budget and unexpected change of plans instead of a single new 4TB 3.5" drive I will be able to use that plus used 2 & 1TB 3.5" drives for storage (OS being on a separate ssd). I would sell drove off matching capabilities but that is not in budget. So the question is, how should I utilize these three non- matching drives? #nas #disks

Happy Hanukkah! 🕎

A few weeks ago, I shared the lost 1980 #games and #software of Israeli cartoonist Yaakov Kirschen, recovered from old floppy #disks. 💾

breakintochat.com/blog/2022/11

The collection includes ten games, demos, and experiments in artificial personality and artificial creativity developed for the Apple II, Atari ST, Amiga and IBM PC from 1983-1989.

Download them and try them for the holidays!

#atari#atarist#ibmpc

Hi #astrodon, time for an #introduction 👋

I’m an #astrophysicist, staff researcher at the Institut de Planétologie et d’Astrophysique de Grenoble (#CNRS and Université #Grenoble-Alpes). I work on the formation of #stars and #planets, more specifically the evolution of gas ans dust in #protostars and protoplanetary #disks. For my research I mostly use #ALMA and #NOEMA observations. I also develop models and analysis tools, with a peculiar attention on research #reproducibility and #openscience.