Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Alex W. Fullerton"'
Autor:
Alex W. Fullerton, D. J. Hillier, Ian D. Howarth, Nolan R. Walborn, W. L. F. Marcolino, Yaël Nazé, J.-C. Bouret, Gregg A. Wade, A. Herrero
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 422:2314-2321
We present the first ultraviolet spectrum of the peculiar, magnetic Of?p star HD 108 obtained in its spectroscopic low state. The new data, obtained with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope, reveal significan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e450120f9e5c67284b57446d7789b93c
https://doi.org/10.1111/j.1365-2966.2012.20820.x
https://doi.org/10.1111/j.1365-2966.2012.20820.x
Autor:
M. V. McSwain, Jay P. Dunn, Erika D. Grundstrom, Wenjin Huang, Chris Farrington, C. T. Bolton, D. R. Gies, D. W. Wingert, Tabetha S. Boyajian, Alex W. Fullerton, Stephen J. Williams
Publikováno v:
The Astrophysical Journal. 664:1121-1129
We present the results from an optical spectroscopic analysis of the massive stars HD 37366 and HD 54662. We find that HD 37366 is a double-lined spectroscopic binary with a period of 31.8187 +/- 0.0004 days, and HD 54662 is also a double lined binar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94a1ac2d4ac0aa885dfeec685975aee1
https://doi.org/10.1086/519015
https://doi.org/10.1086/519015
Publikováno v:
The Astronomical Journal. 132:1527-1538
HD 5980 is a unique system containing one massive star (star A) that is apparently entering the luminous blue variable phase, and an eclipsing companion (star B) that may have already evolved beyond this phase to become a Wolf-Rayet star. In this pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b212a51593733b4a6a21c635e2564ab
https://doi.org/10.1086/506966
https://doi.org/10.1086/506966
Autor:
S. Strasser, Jean-François Donati, Gregg A. Wade, Alex W. Fullerton, Pascal Petit, John D. Landstreet
Publikováno v:
Astronomy & Astrophysics. 451:195-206
In this paper we confirm the presence of a globally-ordered, kG-strength magnetic field in the photosphere of the young O star $\theta^1$~Orionis~C, and examine the properties of its optical line profile variations. A new series of high-resolution Mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1af9ad039ca7f73ee7952e6728aeb8ac
https://doi.org/10.1051/0004-6361:20054380
https://doi.org/10.1051/0004-6361:20054380
Autor:
Michael G. Richer, Alex W. Fullerton, Thomas Rauch, Ralf Napiwotzki, G. Stasinska, G. H. Tovmassian
Publikováno v:
The Astrophysical Journal. 616:485-497
We report FUSE and new deep optical spectroscopic observations of PN G 135.9+55.9, the most oxygen-poor planetary nebula located in the Galactic halo. These observations allow us to estimate the gravity of the central star by fitting the profile of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62e862eec009594206bffbd6b519441b
https://doi.org/10.1086/424795
https://doi.org/10.1086/424795
Autor:
Paul A. Crowther, Derck Massa, Ken Brownsberger, Alex W. Fullerton, George Sonneborn, Nolan R. Walborn, J. B. Hutchings, Allan J. Willis
Publikováno v:
The Astrophysical Journal Supplement Series. 154:651-672
We present an atlas of far-ultraviolet spectra of 21 Wolf-Rayet (WR) stars in the Galaxy and Large and Small Magellanic Clouds, secured with the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. The data cover the wavelength range of 912-1190
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efc99e0a1104e4af447a56f7340699bf
https://doi.org/10.1086/422825
https://doi.org/10.1086/422825
Publikováno v:
Astronomy & Astrophysics. 418:275-281
Helium-rich subdwarf B (He-sdB) stars form a very small fraction of the population of hot subdwarf stars in our Galaxy. They have been found both in the field of our Galaxy as well as in globular clusters. The evolution of these rare stars has recent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::236e0468da6cd815f319f5a716421bea
https://doi.org/10.1051/0004-6361:20035917
https://doi.org/10.1051/0004-6361:20035917
Publikováno v:
The Astrophysical Journal. 589:526-542
We have used the Far Ultraviolet Spectroscopic Explorer to conduct a snapshot 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 observations separated by int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08faa1c1d13b1351e0f51abfc87eb21d
https://doi.org/10.1086/374550
https://doi.org/10.1086/374550
Publikováno v:
The Astrophysical Journal. 579:774-799
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 treatment of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eff882e5a9f87141404655c10d8d1dd4
https://doi.org/10.1086/342877
https://doi.org/10.1086/342877
Autor:
Alex W. Fullerton, Luciana Bianchi, Anne Pellerin, Paul A. Crowther, Nolan R. Walborn, George Sonneborn, J. B. Hutchings, Allan J. Willis
Publikováno v:
The Astrophysical Journal Supplement Series. 141:443-468
An atlas of the 900-1200 A region in the spectra of 47 OB stars in the Large and Small Magellanic Clouds, observed at high resolution by the Far Ultraviolet Spectroscopic Explorer (FUSE), is presented and discussed. The systematic trends in the numer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bc7086a101b1aad7a263c66b83c5974
https://doi.org/10.1086/340571
https://doi.org/10.1086/340571