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If boson stars exist, they should occasionally collide and merge like stellar-mass black holes, generating gravitational waves detectable from Earth.
The explosion associated with Askap J005512-255834 is offset from the galaxy nucleus and lies within a compact star-forming region that may be a stellar cluster.
The laboratory approach could reveal where CHON-rich grains are most abundant and how they are transformed as they move from stellar envelopes into interstellar clouds and planetary systems.
The observed disc patterns suggest ongoing gravitational sculpting by unseen bodies and complex interactions between dust, gas, and stellar radiation over tens to hundreds of millions of years.
By building laboratory analogues and reading their infrared fingerprints, scientists can infer how carbonaceous material forms and evolves in stellar nurseries and debris clouds.
Tight binaries with sub-seven-day orbital periods naturally lose nearby planets through the formation and inspiral process without invoking external stellar disruptions.
Standard stellar models include a stable layer between the core and the convective envelope that acts as a barrier to mixing.
Researchers at the University of Victoria Astronomy Research Centre and the University of Minnesota found that stellar rotation dramatically enhances mixing across the stable layer separating the nuclear-burning interior from the outer convective envelope.
Simon Blouin and colleagues used high-resolution three-dimensional hydrodynamical simulations to quantify the impact of stellar rotation on internal gravity waves.
The project performed what the research team characterizes as the most computationally intensive simulations of stellar convection and internal gravity waves to date.
The numerical methods developed for the project have applications beyond stellar interiors, including ocean circulation, atmospheric dynamics, and blood flow.
A relatively weak shockwave associated with the M31-2014-DS1 progenitor failed to eject most of the stellar material, causing that material to fall back inward under gravity.
A failed supernova is a type of stellar death in which the core of a massive star collapses directly into a black hole and only a modest amount of material is expelled, producing a faint or undetectable optical signature.
The combination of a sudden infrared outburst, extreme optical fading, and a missing stellar core for M31-2014-DS1 points to collapse into a black hole rather than a conventional supernova.
Since the 1990s, astronomers have discovered more than 6,000 exoplanets, mostly by detecting small dips in stellar brightness as planets transit in front of their host stars.
The research team observed an unusual stellar object in the Andromeda Galaxy that brightened and then faded from view until it disappeared.
Rocky planets are expected to form close to their host star because intense stellar radiation can strip away most of the gas surrounding a solid core.
The chemical composition of 3I/ATLAS indicates it formed in a stellar environment markedly different from the solar system.
PBHs could be much lighter than stellar-collapse black holes observed to date.
GW250114 is the strongest gravitational wave signal recorded so far from the coalescence of two stellar-mass black holes.