Results 41 to 50 of about 1,499,205 (291)

A Compact Object with a K-type Star Companion in the Solar Neighborhood: A Wide Postcommon Envelope Binary with a White Dwarf Candidate

The Astrophysical Journal
Post-common envelope binaries (PCEBs) consisting of a white dwarf (WD) plus a main-sequence star can constrain current prescriptions of common envelope evolution (CEE) and calibrate theoretical models of binary formation and evolution. Most PCEBs studied
Jie Lin, Hailiang Chen, Bojun Wang, Yudong Luo, Wenshi Tang, Bo Huang   +5 more
doaj   +1 more source

dynoGP: Deep Gaussian Processes for Dynamic System Identification

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces a novel class of deep models for system identification, dynamical deep Gaussian processes, which combine the strengths of data‐driven methods, such as those based on neural network architectures, with the ability to output a probability distribution for uncertainty representation.
Alessio Benavoli, Marco Forgione, Dario Piga, Marco Zaffalon   +3 more
wiley   +1 more source

Great Impostors: Extremely Compact, Merging Binary Neutron Stars in the Mass Gap Posing as Binary Black Holes [PDF]

, 2023
Can one distinguish a binary black hole undergoing a merger from a binary neutron star if the individual compact companions have masses that fall inside the so-called mass gap of 3-5  M⊙?
Tsokaros, Antonios, Shapiro, Stuart L., Sun, Lunan, Uryū, Kōji, Ruiz Meneses, Milton Javier   +4 more
core   +1 more source

Electromagnetic Characterization of the LISA Verification Binary ZTF J0526+5934

The Astrophysical Journal, 2023
We present an analysis of new and archival data to the 20.506 minute LISA verification binary J052610.42+593445.32 (J0526+5934). Our joint spectroscopic and photometric analysis finds that the binary contains an unseen M _1 = 0.89 ± 0.11 M _⊙ CO-core ...
Alekzander Kosakowski, Thomas Kupfer, P. Bergeron, Tyson B. Littenberg   +3 more
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Orbital Elements of visual binary stars with very short arcs: With application to double stars from the 1829 southern double star catalog of James Dunlop [PDF]

, 2022
Binary double stars are those whose binding energies are less than zero. Obtaining binary star orbits from short arcs has been a long-standing problem in astrophysics.
Roderick R. Letchford, Carolyn J. Brown, Brown, Carolyn J., White, Graeme L., Graeme L. White, Letchford, Roderick R.   +5 more
core   +1 more source

Radial Velocity Orbital Solutions for Candidate Black Hole and Neutron Star Binary Systems in the Gaia Data Release 3 Catalog

The Astrophysical Journal
We present spectroscopic follow-up observations of binary systems from the Gaia Data Release 3 (DR3) binary catalog that were selected to have large enough mass functions for their companions to be black holes or neutron stars.
Joshua D. Simon, Casey Y. Lam, Kareem El-Badry, Henrique Reggiani, Sukanya Chakrabarti, Puragra Guhathakurta, Ian B. Thompson, Nidia Morrell, Daniel Huber, Benjamin J. Fulton, Lauren M. Weiss   +10 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

First Double Red Giant Algol System with Active Mass Transfer

The Astronomical Journal
Double red giant stars are very important for studies of the stability of mass transfer, common-envelope evolution, and the formation of double white dwarfs with short orbital periods.
Mikhail Yu. Kovalev, Hailiang Chen, Sufen Guo, Jiao Li, Hongwei Ge, Dengkai Jiang, Marina A. Burlak, Natalia P. Ikonnikova, Xuefei Chen, Zhanwen Han   +9 more
doaj   +1 more source

Double-core evolution and the formation of neutron star binaries with compact companions [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
We present the results of a systematic exploration of an alternative evolutionary scenario to form double neutron-star binaries, first proposed by Brown (1995), which does not involve a neutron star passing through a common envelope. In this scenario, the initial binary components have very similar masses, and both components have left the main ...
Dewi, J, Podsiadlowski, P, Sena, A
openaire   +2 more sources