Journal
ASTROPHYSICAL JOURNAL
Volume 544, Issue 2, Pages L153-L156Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/317302
Keywords
ISM : individual (YLW 15); ISM : jets and outflows; stars : formation; X-rays : ISM
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YLW 15 is a remarkable object since it exhibits phenomena, such as strong millimeter emission and association with a bipolar outflow, that characterize extremely young stars (class 0 or I objects) while at the same time presenting strong, time-variable X-ray emission that is ubiquitous and detected characteristically in more evolved objects. Our Very Large Array observations reveal that YLW 15 is a subarcsecond (0.6) radio binary, with one of the components spatially extended and the other unresolved. We discuss the possibility that the components of the binary system may have different characteristics also at other wavelengths, possibly as a result of different evolutionary status, and discuss future observations that may test this hypothesis.
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