Results 61 to 70 of about 1,072 (156)

Spectroscopic survey of faint planetary-nebula nuclei

Astronomy & Astrophysics
Our ongoing spectroscopic survey of faint planetary-nebula nuclei (PNNi) has revealed 30 new hydrogen-deficient central stars. The majority of them (21) belong to the PG1159 spectral class (having He-C-O-dominated atmospheres).
Werner Klaus, Bond Howard E., Zeimann Gregory R.   +2 more
doaj   +1 more source

Detection of hot subdwarf binaries and He-poor hot subdwarf stars using machine learning methods and a large sample of Gaia XP spectra

Astronomy & Astrophysics
Context. Hot subdwarfs (hot sds) are compact evolved stars near the extreme horizontal branch, and they are key to understanding stellar evolution and the UV excess in galaxies.
Ambrosch M., Viscasillas Vázquez C., Solano E., Ulla A., Pérez-Couto X., Pérez-Fernández E., Medžiūnas A., Manteiga M., Dafonte C., Drazdauskas A., Magrini L., Mikolaitis Š., Šatas V.   +12 more
doaj   +1 more source

The Helium-Rich Star, Sigma Orionis E.

The Astrophysical Journal, 1958
Jesse L. Greenstein, George Wallerstein
openaire   +1 more source

Multiphase Shock Cooling Emission in Ultrastripped Supernovae

The Astrophysical Journal
Ultrastripped and Type Ibn supernovae (USSNe and SNe Ibn, respectively) are fast-evolving, hydrogen-poor transients that often show signs of interaction with dense circumstellar material (CSM). S. C. Wu & J.
Annastasia Haynie, Samantha C. Wu, Anthony L. Piro, Jim Fuller   +3 more
doaj   +1 more source

Hydrogen-helium immiscibility boundary in gas-giant planetary interiors from machine-learning molecular dynamics. [PDF]

Nat Commun
Wang X, Hamel S, Cheng B.
europepmc   +1 more source

Gravitational-wave constraints on the pair-instability mass gap and nuclear burning in massive stars. [PDF]

Nat Astron
Antonini F, Romero-Shaw IM, Callister T, Dosopoulou F, Chattopadhyay D, Ginat YB, Gieles M, Mapelli M.   +7 more
europepmc   +1 more source

Red novae, their progenitors, and remnants. [PDF]

Astron Astrophys Rev
Kamiński T, Blagorodnova N.
europepmc   +1 more source

A new helium-rich B-type star

The Astrophysical Journal, 1973
openaire   +1 more source

A periodic system of polycyclic aromatic hydrocarbons for predictive molecular growth processes. [PDF]

Chem Sci
Li W, Ju H, Xu MG, Goettl SJ, Yang JZ, Zhao L, Kaiser RI.   +6 more
europepmc   +1 more source

The Helium-Rich Star HD 264111

The Astrophysical Journal, 1967
openaire   +1 more source