Heo, JEAngeloni, RDi Mille, FPalma, TLee, HW2017-05-092017-05-092016-12The Astrophysical Journal, Volume 833, Number 20004-637Xdoi:10.3847/1538-4357/833/2/286http://repositorio.unab.cl/xmlui/handle/ria/3382Indexación: Web of Science.We present a detailed modeling of the two broad bands observed at 6825 and 7082 angstrom in Sanduleak's star, a controversial object in the Large Magellanic Cloud. These bands are known to originate from Raman scattering of O VI lambda lambda 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 spectrograph at the Magellan-Clay Telescope reveals, quite surprisingly, that the profiles of the two bands look very different: while the Raman 6825 angstrom band shows a single broad profile with a redward extended bum, the Raman 7082 angstrom band exhibits a distinct trip-peak profile. Our model suggests that the O VI emission nebula can be decomposed into a red, blue, and central emission region 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) similar to 4.5, which indicates that the neutral region in Sanduleak's star is characterized by the column density N-HI similar to 1 x 10(23) cm(-2).enBinaries: symbioticLine: profilesRadiative transferScatteringStars: individual (Sanduleak's star)Artículo