Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Lee Anne Willson"'
Publikováno v:
Vol. 54, Issue 1 (Obituaries, News & Commentaries, Community Reports). 54
Autor:
W. D. Cotton, William C. Danchi, Wesley A. Traub, S. Ragland, Lee Anne Willson, M. G. Lacasse, E. A. Pluzhnik
Publikováno v:
The Astrophysical Journal Supplement Series. 188:506-525
This is the fourth paper in a series of multi-epoch observations at 7 mm wavelength of the SiO masers in several asymptotic giant branch stars from a sample of Mira variable stars showing evidence of asymmetric structure in the infrared. These stars
Autor:
Lee Anne Willson, M. G. Lacasse, S. Ragland, William C. Danchi, W. D. Cotton, Wesley A. Traub, E. A. Pluzhnik
Publikováno v:
The Astrophysical Journal Supplement Series. 187:107-118
This is the third paper in a series of multi-epoch observations at 7 mm wavelength of the SiO masers in several asymptotic giant branch stars from a sample of Mira variable stars showing evidence of asymmetric structure in the infrared. These stars h
Autor:
W. D. Cotton, Lee Anne Willson, Wesley A. Traub, M. G. Lacasse, S. Ragland, E. A. Pluzhnik, William C. Danchi
Publikováno v:
The Astrophysical Journal Supplement Series. 185:574-585
This is the second paper in a series of multi-epoch observations of the SiO masers at 7 mm wavelength in several asymptotic giant branch stars from a sample of Mira variable stars showing evidence of asymmetric structure in the infrared. These stars
Autor:
Wesley A. Traub, Lee Anne Willson, M. G. Lacasse, W. D. Cotton, S. Ragland, William C. Danchi, E. A. Pluzhnik
Publikováno v:
The Astrophysical Journal. 704:170-182
This is the first paper in a series of multi-epoch observations of the SiO masers at 7 mm wavelength in several asymptotic giant branch (AGB) stars. This is a sample of Mira variable stars showing evidence of asymmetric structure in the infrared whic
Autor:
Lee Anne Willson, Sam Ragland, E. Pluzhnik, Herve Le Coroller, W. D. Cotton, William C. Danchi, Wesley A. Traub
Publikováno v:
The Astrophysical Journal. 700:114-122
Many of the Mira stars observed with adequate spatial resolution show detectable asymmetry. This asymmetry can be caused by an asymmetric stellar photosphere and/or asymmetric envelope around the star and can be the origin of asymmetries in the subse
Autor:
M. G. Lacasse, W. C. Danchi, Lee Anne Willson, John D. Monnier, H. Le Coroller, S. Ragland, W. D. Cotton, E. Pluzhnik, J. P. Berger, W. A. Traub
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2008, 679, pp.746. ⟨10.1086/529573⟩
The Astrophysical Journal, American Astronomical Society, 2008, 679, pp.746. ⟨10.1086/529573⟩
We report imaging observations of the symbotic long-period Mira variable R Aquarii (R Aqr) at near-infrared and radio wavelengths. The near-infrared observations were made with the IOTA imaging interferometer in three narrow-band filters centered at
Autor:
Lee Anne Willson
Publikováno v:
Proceedings of the International Astronomical Union. 4:189-195
Observations tend to select mass loss rates near the critical rate, Ṁcrit = M/L. There are two reasons for this. In some situations, such as near the tip of the AGB, the mass loss rate is very sensitive to stellar parameters. In this case, stars wi
Autor:
David Malin, Rafael Millan-Gabet, F. P. Schloerb, Wesley A. Traub, P. Kern, Michael R. Pearlman, W. D. Cotton, John D. Monnier, P. Labeye, Ettore Pedretti, J. P. Berger, Charles H. Townes, Fabien Malbet, K. Perraut, S. Ragland, Gary Wallace, Kamal Souccar, W. C. Danchi, Nathaniel P. Carleton, P. Haguenauer, M. G. Lacasse, M. Brewer, Lee Anne Willson
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2006, 652, pp.650. ⟨10.1086/507453⟩
The Astrophysical Journal, American Astronomical Society, 2006, 652, pp.650. ⟨10.1086/507453⟩
International audience; We have measured nonzero closure phases for about 29% of our sample of 56 nearby asymptotic giant branch (AGB) stars, using the three-telescope Infrared Optical Telescope Array (IOTA) interferometer at near-infrared wavelength
Autor:
Lee Anne Willson
Publikováno v:
Symposium - International Astronomical Union. 210:403-411
Speakers for this session were selected according to our perceptions about the frontier areas in dynamical atmospheres, the atmospheres of very cool stars, and stellar winds. This summary of posters and topics raised in the round table discussion ope