Researchers claim to have found the oldest stellar disk in the …
6 days ago · DOI: 10.1038/s41550-024-02382-w. A team of astronomers and astrophysicists at the Chinese Academy of Sciences and the University of Toronto has found what they believe is the oldest stellar disk ...
Milky Way’s Ancient Stellar Disk Unveils the Galaxy’s …
5 days ago · This stellar disk dates back to a period shortly after the Big Bang, about 13.4 billion years ago, when the first stars began to form.Prior to this discovery, astronomers believed the Milky Way ...
That, the team claims, leaves the current disk with 2.2 billion solar masses—a figure that represents just 0.2% of the current mass of the galaxy, demonstrating just how much of the Milky Way is ...
Astronomers find remnants of the Milky Way’s original stellar disk
5 days ago · October 16, 2024. Astronomers find remnants of the Milky Way’s original stellar disk. Mykyta Lytvynov. A team of researchers from China and Canada reported the discovery of the remnants of the original stellar disk from which our Milky Way galaxy later evolved. The Milky Way in an artist’s impression.
The formation and survival of the Milky Way’s oldest stellar disk
Oct 10, 2024 · Recent studies with precise stellar age, kinematics and abundances suggest that the onset of the Galactic old stellar disk was in the first billion years of the universe (age τ ≈ 13 Gyr, or...
The bubbling surface of a stellar crucible | Nature Astronomy
4 days ago · news & views. article. The bubbling surface of a stellar crucible ... but the contrast between the granules and the average stellar disk is lower at submillimetre wavelengths (a few percent in the ...
[2410.09762] On the Stellar Disk Vertical Scale Height of Edge-on ...
Oct 13, 2024 · On the Stellar Disk Vertical Scale Height of Edge-on Galaxies from S. 4. G. Disk galaxies viewed as thin planar structures resulting from the conservation of angular momentum of an initially rotating pre-galactic cloud allow merely a first-order model of galaxy formation. Still, the presence of vertically extended structures has allowed us to ...
Astronomers Spotted a Disk Orbiting a Star in Another Galaxy
Astronomers have recently spotted signs of an extended disk of dust and gas, whirling in orbit around a distant star. While this phenomenon is a normal stage in the development of a star and its planetary system, what makes this find so spectacular is that it's the first one we've seen around a star in a whole other galaxy, outside of our own.
MIT researchers discover the universe’s oldest stars in ... - MIT News
May 14, 2024 · MIT researchers, including several undergraduate students, have discovered three of the oldest stars in the universe, and they happen to live in our own galactic neighborhood. The team spotted the stars in the Milky Way’s “halo” — the cloud of stars that envelopes the entire main galactic disk. Based on the team’s analysis, the three ...
Dark Halos and Warped Disks - AAS Nova
Dec 4, 2023 · Galaxies are embedded within halos of dark matter, the invisible matter thought to make up 85% of the mass of our universe. New research investigates how a tilt in a galaxy’s dark matter halo can affect its stellar halo and stellar disk.