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The 2008 Outburst in the Young Stellar System Z CMa: The First Detection of Twin Jets

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dc.contributor.author Redman, Matt P. en
dc.date.accessioned 2011-03-10T16:54:31Z en
dc.date.available 2011-03-10T16:54:31Z en
dc.date.issued 2010 en
dc.identifier.citation Emma Whelan, Catherine Dougados, Marshall Perrin, Mickael Bonnefoy, Indra Bain...(2010)The 2008 Outburst in the Young Stellar System Z CMa: The First Detection of Twin Jets, en
dc.identifier.uri http://hdl.handle.net/10379/1722 en
dc.description.abstract The Z CMa binary is understood to undergo both FU Orionis (FUOR) and EX Orionis (EXOR) type outbursts. While the SE component has been spectro- scopically identified as an FUOR, the NW component, a Herbig Be star, is the source of the EXOR outbursts. The system has been identified as the source of a large outflow, however, previous studies have failed to identify the driver. Here we present adaptive optics (AO) assisted [FeII] spectro-images which reveal for the first time the presence of two jets. Observations made using OSIRIS at the Keck Observatory show the Herbig Be star to be the source of the parsec-scale outflow, which within 2'' of the source shows signs of wiggling and the FUOR to '' be driving a ~ 0.4 jet. The wiggling of the Herbig Be star's jet is evidence for an additional companion which could in fact be generating the EXOR outbursts, the last of which began in 2008 (Grankin & Artemenko 2009). Indeed the dy- namical scale of the wiggling corresponds to a time-scale of 4-8 years which is in agreement with the time-scale of these outbursts. The spectro-images also show a bow-shock shaped feature and possible associated knots. The origin of this structure is as of yet unclear. Finally interesting low velocity structure is also observed. One possibility is that it originates in a wide-angle outflow launched from a circumbinary disk. en
dc.format application/pdf en
dc.language.iso en en
dc.relation Test
dc.subject Astrophysics - Solar and Stellar Astrophysics en
dc.title The 2008 Outburst in the Young Stellar System Z CMa: The First Detection of Twin Jets en
dc.type Article en
dc.local.publishedsource http://arxiv.org/pdf/1008.0111 en
dc.description.peer-reviewed peer-reviewed en
dc.local.authors Emma Whelan, Catherine Dougados, Marshall Perrin, Mickael Bonnefoy, Indra Bains, Matt Redman, Tom Ray, Herve Bouy, Myriam Benisty, Jerome Bouvier, Gael Chauvin, Paulo Garcia, Konstantin Grankin, Fabien Malbet en
dc.local.arxivid 1008.0111 en

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