Spectroscopic evidence for rapid blob ejection in Wolf-Rayet stars
1988; IOP Publishing; Volume: 334; Linguagem: Inglês
10.1086/166895
ISSN1538-4357
AutoresA. F. J. Moffat, Laurent Drissen, R. Lamontagne, Carmelle Robert,
Tópico(s)Astronomy and Astrophysical Research
Resumoview Abstract Citations (166) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectroscopic Evidence for Rapid Blob Ejection in Wolf-Rayet Stars Moffat, Anthony F. J. ; Drissen, Laurent ; Lamontagne, Robert ; Robert, Carmelle Abstract The authors have monitored the five bright Cygnus WN stars in the unblended He II λ5411 emission line at high spectral resolution and high signal-to-noise ratio during four or five nights. Typical data are presented here for the two single WN6 stars HD 191765 and HD 192163. The spectra reveal narrow emission bumps superposed on a broad, smooth background wind profile, with FWHM ≈ 2 - 10 Å and height ≤10% in continuum units for HD 191765. The bumps always appear to accelerate outward along with the general wind, on a time scale of hours. Publication: The Astrophysical Journal Pub Date: November 1988 DOI: 10.1086/166895 Bibcode: 1988ApJ...334.1038M Keywords: Astronomical Spectroscopy; Stellar Mass Ejection; Wolf-Rayet Stars; Emission Spectra; Helium; Line Spectra; O Stars; Signal To Noise Ratios; Stellar Winds; Astrophysics; LINE PROFILES; STARS: INDIVIDUAL HENRY DRAPER NUMBER: HD 191765; STARS: INDIVIDUAL HENRY DRAPER NUMBER: HD 192163; STARS: WINDS; STARS: WOLF-RAYET full text sources ADS | data products SIMBAD (2)
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