A PROFILE ANALYSIS OF RAMAN-SCATTERED O VI BANDS AT 6825 angstrom AND 7082 angstrom IN SANDULE'S STAR

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dc.contributor.authorHeo, JE
dc.contributor.authorAngeloni, R
dc.contributor.authorDi Mille, F
dc.contributor.authorPalma, T
dc.contributor.authorLee, HW
dc.date.accessioned2017-05-09T16:16:18Z
dc.date.available2017-05-09T16:16:18Z
dc.date.issued2016-12
dc.descriptionIndexación: Web of Science.es
dc.description.abstractWe 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).es
dc.description.urihttp://iopscience.iop.org/article/10.3847/1538-4357/833/2/286/pdf
dc.identifier.citationThe Astrophysical Journal, Volume 833, Number 2es
dc.identifier.issn0004-637X
dc.identifier.otherdoi:10.3847/1538-4357/833/2/286
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/3382
dc.language.isoenes
dc.publisherIOP PUBLISHINGes
dc.subjectBinaries: symbiotices
dc.subjectLine: profileses
dc.subjectRadiative transferes
dc.subjectScatteringes
dc.subjectStars: individual (Sanduleak's star)es
dc.titleA PROFILE ANALYSIS OF RAMAN-SCATTERED O VI BANDS AT 6825 angstrom AND 7082 angstrom IN SANDULE'S STARes
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