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Related papers: The Detection of Wind Variability in Magellanic Cl…

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We have used the Far Ultraviolet Spectroscopic Explorer (FUSE) to conduct a snap-shot survey of O VI variability in the winds of 66 OB-type stars in the Galaxy and the Magellanic Clouds. These time series consist of two or three…

Astrophysics · Physics 2007-05-23 N. Lehner , A. W. Fullerton , D. Massa , K. R. Sembach , J. Zsargo

A primary goal of the FUSE mission is to understand the origin of the O VI ion in the interstellar medium of the Galaxy and the Magellanic Clouds. Along sightlines to OB-type stars, these interstellar components are usually blended with O…

Astrophysics · Physics 2009-11-06 N. Lehner , A. W. Fullerton , K. R. Sembach , D. L. Massa , E. B Jenkins

We compare the stellar wind features in far-UV spectra of Sk -67 111, an O7 Ib(f) star in the LMC, with Sk 80, an O7 Iaf+ star in the SMC. The most striking differences are that Sk 80 has a substantially lower terminal velocity, much weaker…

We report the progress to date from an ongoing unbiased ultraviolet survey of supernova remnants in the Magellanic Clouds using the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. This survey is obtaining spectra of a random large…

Astrophysics · Physics 2009-11-11 William P. Blair , Parviz Ghavamian , Ravi Sankrit , Charles W. Danforth

We have undertaken a FUSE survey of Magellanic Cloud supernova remnants, looking primarily for O VI and C III emission lines. Work in earlier cycles with FUSE indicates that optical and/or X-ray characteristics of supernova remnants are not…

New constraints on the large-scale wind structures responsible for discrete absorption components are obtained from far-ultraviolet time-series observations of O supergiants in the Large Magellanic Cloud.

Astrophysics · Physics 2007-05-23 A. W. Fullerton , D. L. Massa , R. K. Prinja , I. D. Howarth , A. J. Willis , S. P. Owocki

The impact of FUSE upon the fundamental parameters of OB stars and Wolf-Rayet stars is reviewed. The stellar wind signatures available in the far-UV provide us with important additional diagnostics of effective temperature. Together with…

Astrophysics · Physics 2007-05-23 Paul A. Crowther

We present new results from our survey of diffuse O VI-emitting gas in the interstellar medium with the Far Ultraviolet Spectroscopic Explorer (FUSE). Background observations obtained since 2005 have yielded eleven new O VI detections of…

Astrophysics · Physics 2015-05-13 W. Van Dyke Dixon , Ravi Sankrit

We present an atlas of 57 Large Magellanic Cloud (LMC) and 37 Small Magellanic Cloud (SMC) observations obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. The atlas highlights twelve interstellar absorption line…

We have undertaken quantitative analysis of four LMC and SMC O4--9.7 extreme supergiants using far-ultraviolet FUSE, ultraviolet IUE/HSTand optical VLT UVES spectroscopy. Extended, non-LTE model atmospheres that allow for the consistent…

Astrophysics · Physics 2009-11-07 P. A. Crowther , D. J. Hillier , C. J. Evans , A. W. Fullerton , O. De Marco , A. J. Willis

We use a Sobolev with Exact Integration model to analyze the winds lines of 25 LMC O stars. The data include FUSE profiles of C III, N III, S IV, P V, S VI, and O VI and IUE or HST data for Si IV, C IV, and N V. Several of the FUSE lines…

Astrophysics · Physics 2009-11-07 D. Massa , A. W. Fullerton , G. Sonneborn , J. B. Hutchings

We present a survey of diffuse O VI emission in the interstellar medium obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE). Spanning 5.5 years of FUSE observations, from launch through 2004 December, our data set consists of…

Astrophysics · Physics 2008-11-26 W. Van Dyke Dixon , Ravi Sankrit , Birgit Otte

We have conducted a survey of FUSE spectra of 235 Galactic B-type stars in order to determine the boundaries in the H-R diagram for the production of the superion O VI in their winds. By comparing the locations and morphology of otherwise…

Astrophysics · Physics 2009-11-07 J. Zsargo , A. W. Fullerton , N. Lehner , D. Massa

We present a variability study of 4646 massive stars in the Small Magellanic Cloud (SMC) with known spectral types from the catalog of Bonanos et al. (2010) using the light curves from the OGLE-III database. The goal is to exploit the time…

The far-ultraviolet (FUV) diffuse emission is predominantly due to scattering of starlight from interstellar dust grains which shows a large regional variation depending on the relative orientations of dust and stars. The observations of…

Astrophysics of Galaxies · Physics 2013-07-05 Ananta C. Pradhan

We present a comprehensive analysis of the photometric variability of (presumably single) nitrogen-rich Wolf-Rayet (WN) stars in the Magellanic Clouds, using long-term observations from the OGLE survey. Our sample comprises 47 stars with no…

Solar and Stellar Astrophysics · Physics 2026-02-06 Jana Marković , Guadalupe Sáez-Cano , Yaël Nazé , María del Mar Rubio-Díez , Igor Soszyński , Andrzej Udalski

We present quantitative studies of 8 late O and early B-type supergiants in the Magellanic Clouds using far-ultraviolet FUSE, ultraviolet IUE/HST and optical VLT-UVES spectroscopy. Temperatures, mass-loss rates and CNO abundances are…

Astrophysics · Physics 2009-11-10 C. J. Evans , P. A. Crowther , A. W. Fullerton , D. J. Hillier

Since the IUE satellite produced a vast collection of high-resolution UV spectra of central stars of planetary nebulae (CSPNe), there has not been any further systematic study of the stellar winds of these stars. The high spectral…

Solar and Stellar Astrophysics · Physics 2015-05-14 Martin A. Guerrero , Gerardo Ramos-Larios , Derck Massa

We describe variable stars found in the data collected during the OGLE-III Shallow Survey covering the I-band magnitude range from 9.7 mag to 14.5 mag. The main result is the extension of period--luminosity relations for Cepheids up to 134…

We report Far Ultraviolet Spectroscopic Explorer (FUSE) observations of interstellar O VI absorption in the halo of the Milky Way towards 12 early-type stars in the Large Magellanic Cloud (LMC) and 11 in the Small Magellanic Cloud (SMC).…

Astrophysics · Physics 2007-05-23 J. Christopher Howk , Blair D. Savage , Kenneth R. Sembach , Charles G. Hoopes
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