Giant planet engulfment by evolved giant stars: light curves, asteroseismology, and survivability

CE O'Connor, L Bildsten, M Cantiello… - The Astrophysical …, 2023 - iopscience.iop.org
About ten percent of Sun-like (1–2 M⊙) stars will engulf a 1–10 MJ planet as they expand
during the red giant branch (RGB) or asymptotic giant branch (AGB) phase of their evolution …

Numerical simulations of the random angular momentum in convection–II. Delayed explosions of red supergiants following 'failed'supernovae

A Antoni, E Quataert - Monthly Notices of the Royal Astronomical …, 2023 - academic.oup.com
When collapse of the iron core in a massive red or yellow supergiant does not lead to an
energetic supernova, a significant fraction of the convective hydrogen envelope will fall in …

Multiwavelength detection of an ongoing FUOr-type outburst on a low-mass YSO

Z Guo, PW Lucas, RG Kurtev… - Monthly Notices of …, 2024 - academic.oup.com
During the pre-main-sequence evolution, Young Stellar Objects (YSOs) assemble most of
their mass during the episodic accretion process. The rarely seen FUOr-type events are …

High-energy Neutrinos from Gamma-Ray-faint Accretion-powered Hypernebulae

N Sridhar, BD Metzger, K Fang - The Astrophysical Journal, 2023 - iopscience.iop.org
Hypernebulae are inflated by accretion-powered winds accompanying hyper-Eddington
mass transfer from an evolved post-main-sequence star onto a black hole or neutron star …

JWST reveals a luminous infrared source at the position of the failed supernova candidate N6946-BH1

ER Beasor, G Hosseinzadeh, N Smith… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract N6946-BH1 (BH1) is the first plausible candidate for a failed supernova (SN), a
peculiar event in which a massive star disappears without the expected bright SN …

The S-PLUS Transient Extension Program: imaging pipeline, transient identification, and survey optimization for multimessenger astronomy

A Santos, CD Kilpatrick, CR Bom, P Darc… - Monthly Notices of …, 2024 - academic.oup.com
We present the S-PLUS Transient Extension Program (STEP): a supernova and fast
transient survey conducted in the southern hemisphere using data from the Southern …

Bright common envelope formation requires jets

N Soker - arXiv preprint arXiv:2306.07702, 2023 - arxiv.org
I compared with each other and with observations three energy sources to power
intermediate luminosity optical transients (ILOTs) and conclude that only jets can power …

A bipolar structure and shocks surrounding the stellar-merger remnant V1309 Scorpii

T Steinmetz, T Kamiński, M Schmidt, A Kiljan - Astronomy & Astrophysics, 2024 - aanda.org
Context. V1309 Sco is an example of a red nova, a product of the merger between non-
compact stars. V1309 Sco is particularly important within the class of red novae due to the …

Merger Precursor: Year-long Transients Preceding Mergers of Low-mass Stripped Stars with Compact Objects

D Tsuna, SC Wu, J Fuller, Y Dong, AL Piro - arXiv preprint arXiv …, 2024 - arxiv.org
Binary mass transfer can occur at high rates due to rapid expansion of the donor's envelope.
In the case where mass transfer is unstable, the binary can rapidly shrink its orbit and lead to …

Close Encounters of Wide Binaries Induced by the Galactic Tide: Implications for Stellar Mergers and Gravitational-Wave Sources

J Stegmann, A Vigna-Gómez, A Rantala… - arXiv preprint arXiv …, 2024 - arxiv.org
A substantial fraction of stars can be found in wide binaries with projected separations
between $\sim10^ 2$ and $10^ 5\,\rm AU $. In the standard lore of binary physics, these …