Results 41 to 50 of about 180 (127)

A wind environment and Lorentz factors of tens explain gamma-ray bursts X-ray plateau. [PDF]

Nat Commun, 2022
Dereli-Bégué H, Pe'er A, Ryde F, Oates SR, Zhang B, Dainotti MG.   +5 more
europepmc   +1 more source

Atmospheric Diagnostics of Wolf-Rayet Stars [PDF]

International Astronomical Union Colloquium, 1988
Wolf-Rayet (WR) stars are the descendants of massive stars that have lost their hydrogen rich envelope. Recently more accurate data on WR stars have become available: mass-loss rates (van der Hucht et al. 1986), radii and luminosities (Underhill 1983, Nussbaumer et al.
openaire   +1 more source

Wind variations of wolf-rayet stars [PDF]

International Astronomical Union Colloquium, 1999
AbstractWhat distinguishes WR stars from most of their progenitor phases is their dense winds, that often completely hide their small hydrostatic cores. Thus, to learn about these cores, which are especially important in an evolutionary context, we are generally limited to studying the winds only.
openaire   +1 more source

Carbonaceous dust grains seen in the first billion years of cosmic time. [PDF]

Nature, 2023
Witstok J, Shivaei I, Smit R, Maiolino R, Carniani S, Curtis-Lake E, Ferruit P, Arribas S, Bunker AJ, Cameron AJ, Charlot S, Chevallard J, Curti M, de Graaff A, D'Eugenio F, Giardino G, Looser TJ, Rawle T, Rodríguez Del Pino B, Willott C, Alberts S, Baker WM, Boyett K, Egami E, Eisenstein DJ, Endsley R, Hainline KN, Ji Z, Johnson BD, Kumari N, Lyu J, Nelson E, Perna M, Rieke M, Robertson BE, Sandles L, Saxena A, Scholtz J, Sun F, Tacchella S, Williams CC, Willmer CNA.   +41 more
europepmc   +1 more source

Radiation-driven acceleration in the expanding WR140 dust shell. [PDF]

Nature, 2022
Han Y, Tuthill PG, Lau RM, Soulain A.
europepmc   +1 more source

On the Atmospheres of the Wolf-Rayet Stars [PDF]

Symposium - International Astronomical Union, 1957
In 1945 we showed[1] from a study of six Wolf-Rayet stars that their spectrophotometric temperatures, when allowance is made for interstellar reddening, are still far below the temperatures as determined by the Zanstra method. It was demonstrated that these spectrophotometric temperatures (which are only slightly in excess of those of Ao stars) agree ...
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Neutrino communication, intergalactic transit, and Astrobiology. [PDF]

Bioinformation, 2022
Shapshak P.
europepmc   +1 more source

Wolf-Rayet Stars in M33.

The Astrophysical Journal, 1972
Twenty-five objects in M33 have been identified as Wolf-Rayet stars on the basis of narrow-band interference-filter photography. Spectra of two of the objects obtained by Lynds have been interpreted as WC5 or 6 +OB. Apparent blue continuum magnitudes range from +17.6 to the plate limit at +19.8 yielding absolute magnitudes in reasonable agreement with ...
James D. Wray, George J. Corso
openaire   +1 more source

A helium-burning white dwarf binary as a supersoft X-ray source. [PDF]

Nature, 2023
Greiner J, Maitra C, Haberl F, Willer R, Burgess JM, Langer N, Bodensteiner J, Buckley DAH, Monageng IM, Udalski A, Ritter H, Werner K, Maggi P, Jayaraman R, Vanderspek R.   +14 more
europepmc   +1 more source

Observation of nonvanishing optical helicity in thermal radiation from symmetry-broken metasurfaces. [PDF]

Sci Adv, 2023
Wang X, Sentz T, Bharadwaj S, Ray SK, Wang Y, Jiao D, Qi L, Jacob Z.   +7 more
europepmc   +1 more source