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A dynamically discovered and characterized non-accreting neutron star-M dwarf binary candidate
DOI: 10.1038/s41550-022-01766-0 Bibcode: 2022NatAs...6.1203Y

Huang, Yang; Liu, Jifeng; Bai, Yu +26 more

Typically, neutron stars are discovered by observations at radio, X-ray or gamma-ray wavelengths. Unlike radio pulsar surveys and X-ray observations, optical time-domain surveys can unveil and characterize exciting but less explored non-accreting and/or non-beaming neutron stars in binaries. Here we report the discovery of such a neutron star cand…

2022 Nature Astronomy
IUE Gaia 23
γ Columbae as a recently stripped pulsating core of a massive star
DOI: 10.1038/s41550-022-01809-6 Bibcode: 2022NatAs...6.1414I

Meynet, Georges; Przybilla, Norbert; Irrgang, Andreas

Stellar cores, that is, the central regions where densities and temperatures are high enough for nuclear fusion processes to take place, are usually covered by an opaque envelope. Only in very rare cases, stars may expose their cores, for example, when a tiny fraction of them evolve into Wolf-Rayet or helium hot subdwarf stars. However, for the va…

2022 Nature Astronomy
IUE Gaia 17