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- W3124321596 abstract "We present a detailed modeling of the two broad bands observed at 6825 AA and 7082 AA in Sanduleak's star, a controversial object in the Large Magellanic Cloud. These bands are known to originate from Raman-scattering of O VI $lambdalambda$ 1032 and 1038 photons with atomic hydrogen and are only observed in bona fide symbiotic stars. Our high-resolution spectrum obtained with the Magellan Inamori Kyocera Echelle (MIKE) spectrograph at the Magellan-Clay Telescope reveals, quite surprisingly, that the profiles of the two bands look very different: while the Raman 6825 AA band shows a single broad profile with a redward extended bump, the Raman 7082 AA band exhibits a distinct triple-peak profile. Our model suggests that the O VI emission nebula can be decomposed into a red, blue and central emission regions from an accretion disk, a bipolar outflow and a further compact, optically thick region. We also perform Monte Carlo simulations with the aim of fitting the observed flux ratio $F(6825)/F(7082) sim 4.5$, which indicate that the neutral region in Sanduleak's star is characterized by the column density $N_{HI} sim 1 times 10^{23} {rm cm^{-2}}$." @default.
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- W3124321596 date "2016-12-21" @default.
- W3124321596 modified "2023-10-15" @default.
- W3124321596 title "A PROFILE ANALYSIS OF RAMAN-SCATTERED O VI BANDS AT 6825 Å AND 7082 Å IN SANDULEAK’S STAR" @default.
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- W3124321596 doi "https://doi.org/10.3847/1538-4357/833/2/286" @default.
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