A protostellar jet model for the water masers in W49N

Mordecai Mark Mac Low, Moshe Eutzur, James McLellan Stone, Arieh Königl

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Observations by Gwinn, Moran, & Reid of the proper motions of water masers in W49N show that they have an elongated distribution expanding from a common center. Features with high space velocity only occur far from the center, while low-velocity features occur at all distances. We propose that these observations can be interpreted in terms of a shell of shocked molecular gas that is driven by the expanding cocoon of a high-velocity protostellar jet. We present three-dimensional numerical simulations in support of this interpretation and argue that this source provides a unique opportunity for a detailed study of jet-driven cocoons.

Original languageEnglish (US)
Pages (from-to)914-918
Number of pages5
JournalAstrophysical Journal
Issue number2
StatePublished - Jun 1 1994

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • ISM: individual (W49)
  • ISM: jets and outflows
  • Masers
  • Stars: formation


Dive into the research topics of 'A protostellar jet model for the water masers in W49N'. Together they form a unique fingerprint.

Cite this