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Evidence for evolution of the outflow collimation in very young stellar objects

Authordc.contributor.authorTorrelles, J. M. 
Authordc.contributor.authorPatel, N. A. es_CL
Authordc.contributor.authorAnglada Escudé, Guillem es_CL
Authordc.contributor.authorGómez, J. F. es_CL
Authordc.contributor.authorHo, P. T. P. es_CL
Authordc.contributor.authorLara, L. es_CL
Authordc.contributor.authorAlberdi, A. es_CL
Authordc.contributor.authorCantó, J. es_CL
Authordc.contributor.authorCuriel, S. es_CL
Authordc.contributor.authorGaray Brignardello, Guido es_CL
Authordc.contributor.authorRodríguez, L. F. es_CL
Cita de ítemdc.identifier.citationThe Astrophysical Journal, 598:L115–L119, 2003 December 1en_US
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractWe present Very Long Baseline Array proper-motion measurements of water masers toward two young stellar objects (YSOs) of the W75 N star-forming region. We find that these two objects are remarkable for having a similar spectral type, being separated by 0 .7 (corresponding to 1400 AU), and sharing the same environment, but with a strikingly different outflow ejection geometry. One source has a collimated, jetlike outflow at a 2000 AU scale, while the other has a shell outflow at a 160 AU scale expanding in multiple directions with respect to a central compact radio continuum source. This result reveals that outflow collimation is not only a consequence of ambient conditions but is something intrinsic to the individual evolution of stars and brings to light the possibility of noncollimated outflows in the earliest stages of YSOs.en_US
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectISM: individual (W75)en_US
Títulodc.titleEvidence for evolution of the outflow collimation in very young stellar objectsen_US
Document typedc.typeArtículo de revistaen_US

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile