Wolf–Rayet Stars
A study of variability in the ultraviolet spectra of galactic Wolf-Rayet stars
... of Wolf-Rayet stars in visible linear polarization has only recently been started ...R stars was presented by St-Louis ...single stars, the variability is always found to be stochastic ...
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A deep near-infrared spectroscopic survey of the Scutum-Crux arm for Wolf-Rayet stars
... 17 Wolf-Rayet stars – a ∼ 13% success rate – of which 16 are newly identified ...new Wolf-Rayet stars are classified as narrow-lined WN5–7 stars, with 2 broad-lined WN4–6 ...
20
Narrow band photometry of Wolf-Rayet stars
... includes stars which appear near the edge of an extended region of nebulosity, or which appear in or near an arc of nebulosity but not at the centre of curvature of the ...these stars are, in fact, ...
231
Model atmosphere studies of Wolf-Rayet stars
... Tables 4.3 and 4.4 show selected h e liu m and m e ta l lin e s tre n g th s o f th e p ro g ra m m e sta rs. A fu ll lis t o f lin e id e n tific a tio n s and e q u iva le n t w id th s , W \ , is given in A p p e n d ...
536
Physical Properties of Wolf-Rayet Stars at Infra-red Wavelengths
... masive stars, elaborating on the 1D standard model of line driven ...WR stars are so large, and their atmospheres so extended, that an optical depth of unity arises in the outflowing stellar ...
352
Quantitative studies of Wolf-Rayet stars in Local Group galaxies
... C stars, Hel-Il, C m -iv , O lll- v are m ost im p o rta n ...C stars especially, recourse to simple atom ic stru c tu re can lead to huge underestim ...
339
Spatial distribution of Galactic Wolf–Rayet stars and implications for the global population
... rotating stars or accounting for close binary evolution are more consistent with ...WR stars, implying an average duration of ∼ ...WR stars discovered since the VIIth catalogue (313 including Annex), ...
26
CiteSeerX — MASS–LUMINOSITY RELATION AND PULSATIONAL PROPERTIES OF WOLF–RAYET STARS
... I stars with initial masses ranging within 70M ⊙ ≤ M ZAMS ≤ 130M ⊙ is considered under various assumptions on the mass loss rate ˙ M ...W–R stars is shown to be most sensitive to the mass loss rate ˙ M 3α ...
15
Spectral models for binary products: Unifying subdwarfs and Wolf-Rayet stars as a sequence of stripped-envelope stars
... ABSTRACT Stars stripped of their hydrogen-rich envelope through interaction with a binary companion are generally not considered when account- ing for ionizing radiation from stellar populations, despite the ...
39
Unlocking Galactic Wolf–Rayet stars with Gaia DR2 – II. Cluster and association membership
... Galactic Wolf-Rayet (WR) star membership of star forming regions can be used to constrain the formation environments of massive ...WR stars external to the Galac- tic Centre region are located in ...
20
Massive open star clusters using the VVV survey : II. Discovery of six clusters with Wolf-Rayet stars
... cluster stars and the standard star used for the correction of the atmospheric ...all stars included in observations at a given slit position at a given time are very ...the stars were observed twice ...
17
Do Wolf Rayet stars have similar locations in hosts as type Ib/c supernovae and long gamma ray bursts?
... WN stars to be removed from the WN and be included in the WC ...WN stars. This simulation ignores that, while some WN stars evolve to WC, some new WN stars will be born, and many stars ...
16
Wolf-Rayet Populations at High Metallicity
... of Wolf-Rayet stars at high metallicity are reviewed. Wolf-Rayet stars are more common at higher metallicity, as a result of stronger mass-loss during earlier evolutionary phases ...
11
Metallicity Dependent Wolf-Rayet Winds
... for Wolf-Rayet stars is ...in Wolf-Rayet subtype distributions in the Milky Way, LMC and SMC may be attributed to the sensitivity of subtypes to wind ...for Wolf-Rayet ...
10
On the massive star content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662
... metallicity stars, plus indirect O star numbers from nebular ...WR stars in the SMC, alternative calibra- tions should be obtained to permit a more robust line luminosity calibration for WR stars at ...
11
On the massive star content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662
... hosting Wolf-Rayet stars (or nebular He II λ 4686 ...WN stars are the dominate subtypes within A1 and A2, in addition to one WC star in each of A2 and A1-NW together with nebular He II λ 4686 ...
11
The Wolf-Rayet population of the nearby barred spiral galaxy NGC 5068 uncovered by the Very Large Telescope and Gemini
... candidate Wolf–Rayet sources have been identified, of which 59 cases possess statistically significant λ4686 ...confirms Wolf–Rayet signatures in 30 instances, corresponding to a 47 per cent ...
17
Cool Wolf-Rayet central stars and their planetary nebulae
... N on-LTE W olf-Rayet stellar atm osphere modelling is described to the winds of two central stars with WCIO spectra. From this, stellar param eters are derived which are com pared with estim ates from ...
339
Properties of hot stars in the Wolf-Rayet galaxy NGC5253 from ISO-SWS spectroscopy
... It is therefore rather troubling that the properties of NGC 5253 at which we arrive in this paper depend so crucially on the high spatial resolution ground-based data. The characteristics of NGC 5253 that make it so ...
15
How extreme are the Wolf-Rayet clusters in NGC 3125?
... O stars, accounting for non- LTE and line-blanketing ...O stars is required, such that log Q O for a typical Galactic O7V star de- creases by ...O stars indicate 2–4 kK higher temperatures than their ...
12