A disrupted molecular torus around Eta Carinae as seen in 12CO with ALMA
نویسندگان
چکیده
منابع مشابه
Comparing Eta Carinae with the Red Rectangle
I compare the structures of the bipolar nebulae around the massive binary system η Carinae and around the low mass binary system HD 44179. While η Carinae is on its way to become a supernova, the Red Rectangle is on its way to form a planetary nebula. Despite the two orders of magnitude difference in mass, these two systems show several similarities, both in the properties of the stellar binary...
متن کاملDissecting the Homunculus Nebula Around Eta Carinae With Spatially Resolved Near-Infrared Spectroscopy
Near-infrared emission lines provide unique diagnostics of the geometry, structure, kinematics, and excitation of η Carinae’s circumstellar ejecta, and give clues to the nature of its wind. The infrared spectrum is a strong function of position in η Car’s nebula, with a mix of intrinsic and reflected emission. Molecular hydrogen traces cool gas and dust in the polar lobes, while [Fe ii] blanket...
متن کاملThe Systemic Velocity of Eta Carinae
High-resolution spectra of molecular hydrogen in the Homunculus nebula allow for the first direct measurement of the systemic velocity of η Carinae. Near-infrared longslit data for H2 1-0 S(1) λ21218 obtained with the Phoenix spectrometer on the Gemini South telescope give Vsys=−8.1±1 km s −1 (heliocentric), or VLSR=−19.7±1 km s , from the average of the near and far sides of the Homunculus. Th...
متن کاملEta Carinae and Other Luminous Blue Variables
Luminous Blue Variables (LBVs) are believed to be evolved, extremely massive stars close to the Eddington Limit and hence prone to bouts of large-scale, unstable mass loss. I discuss current understanding of the evolutionary state of these objects, the role duplicity may play and known physical characteristics of these stars using the X-ray luminous LBVs Eta Carinae and HD 5980 as test cases.
متن کاملSuperluminous supernovae: no threat from eta Carinae.
Recently, Supernova 2006gy was noted as the most luminous ever recorded, with a total radiated energy of approximately 10(44) Joules. It was proposed that the progenitor may have been a massive evolved star similar to eta Carinae, which resides in our own Galaxy at a distance of about 2.3 kpc. eta Carinae appears ready to detonate. Although it is too distant to pose a serious threat as a normal...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2017
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stx3050