Optical spectrum of the IR source IRC + 10420 in 1992-1996
نویسندگان
چکیده
منابع مشابه
Interferometric Observations of Irc ]10011 and Irc ]10420 in the Mid-infrared
The 11 km fringe visibilities of IRC ]10011 (\ CIT3) and IRC ]10420 have been measured at baselines ranging from 2 to 14 m with a two-telescope interferometer. The visibility data provide onedimensional proÐles of these two stars and their immediate surroundings with higher resolution in this spectral range than is presently possible with a single-aperture telescope. Spherically symmetric radia...
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15 صفحه اولSpectropolarimetry of the massive post-red supergiants IRC +10420 and HD 179821
We present medium resolution spectropolarimetry and long-term photo-polarimetry of two massive post-red supergiants, IRC +10 420 and HD 179 821. The data provide new information on their circumstellar material as well as their evolution. In IRC +10 420, the polarization of the Hα line is different to that of the continuum, which indicates that the electron-scattering region is not spherically s...
متن کاملProbing the mass loss history of the yellow hypergiant IRC + 10420
We have used the sub-millimeter array to image the molecular envelope around IRC+10420. Our observations reveal a large and clumpy expanding envelope around the star. The molecular envelope shows a clear asymmetry in CO J=2–1 emission in the South-West direction. The elongation of the envelope is found even more pronounced in the emission of CO J=2–1 and SO JK=65–54. A small positional velocity...
متن کاملIntegral-Field Spectroscopy of the Post Red Supergiant IRC +10420: evidence for an axi-symmetric wind
We present NAOMI/OASIS adaptive-optics assisted integral-field spectroscopy of the transitional massive hypergiant IRC +10420, an extreme masslosing star apparently in the process of evolving from a Red Supergiant toward the Wolf-Rayet phase. To investigate the present-day mass-loss geometry of the star, we study the appearance of the line-emission from the inner wind as viewed when reflected o...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1997
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/292.1.19