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Index (hide): Higher resolution Figure EVIDENCE FOR EVOLUTION OF MASS EJECTIONS FROM YOUNG STARSDecember 2003 Both objects seem to be similar in spectral type (i.e., in mass and temperature), and they are separated by only 1400 astronomical units (AU). However, they show a strikingly different outflow geometry:
This difference in outflow geometry is surprising, being both sources so similar and so close to each other, which argues against this difference being due to the conditions of their surrounding medium. We propose that the different shape of these outflows could be the result of the evolution of these young stars. Our results suggests the presence of non-collimated (e.g. approximately spherical) ejections of material in the earliest stages of stellar evolution, a possibility which is difficult to explain with present theories of star formation. This work has been published in The Astrophysical Journal by J. M. Torrelles (IEEC), N. A. Patel (CfA), G. Anglada (IAA), J. F. Gómez (LAEFF), P. T. P. Ho (CfA), L. Lara (IAA), A. Alberdi (IAA), J. Cantó (UNAM), S. Curiel (UNAM), G. Garay (U. Chile), and L. F. Rodríguez (UNAM)
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