The Multiple Protostellar System L1551 IRS5 at 5 AU Resolution

Details The Multiple Protostellar System L1551 IRS5 at 5 AU Resolution The Multiple Protostellar System L1551 IRS5 at 5 AU Resolution

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jkas...38..237l&link_type=abstract

Journal of the Korean Astronomical Society, vol. 38, no. 2, pp. 237-240

Other

2

Stars: Formation, Stars: Multiple, Stars: Outflows, Stars: Individual (L1551 Irs5)

Scientific paper

We present images of L1551 IRS5 at angular resolutions as high as ˜30 mas, corresponding to a spatial resolution of ˜5 AU, made at 7 mm with the VLA. Previously known to be a binary protostellar system, we show that L1551 IRS5 is likely a triple protostellar system. The primary and secondary components have a projected separation of ˜46 AU, whereas the tertiary component has a projected separation of ˜11 AU from the primary component. The circumstellar dust disks of the primary and secondary components have dimensions of ˜15 AU, whereas that of the tertiary component has a dimension of ˜10 AU. Their major axes are closely, but not perfectly, aligned with each other, as well as the major axis of the surrounding flattened, rotating, and contracting molecular condensation (pseudodisk). Furthermore, the orbital motion of the primary and secondary components is in the same direction as the rotational motion of this pseudodisk. We suggest that all three protostellar components formed as a result of the fragmentation of the central region of the molecular pseudodisk. The primary and secondary components, but apparently not the tertiary component, each exhibits a bipolar ionized jet that is centered on and
which emergers perpendicular to its associated dust disk. Neither jets are resolved along their base, implying that they are driven within a radial distance of ˜2.5 AU from their central protostars. Finally, we show evidence for what may be dusty matter streams feeding the two main protostellar components.

Affiliated with

Also associated with

No associations

Rating

The Multiple Protostellar System L1551 IRS5 at 5 AU Resolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Multiple Protostellar System L1551 IRS5 at 5 AU Resolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Multiple Protostellar System L1551 IRS5 at 5 AU Resolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1399491