Infall, fragmentation, and outflow in Sgr B2

Sheng Li Qin*, Jun Hui Zhao, James M. Moran, Daniel Marrone, N. Patel, Sheng Yuan Liu, Yi Jehng Kuan, Jun Jie Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Observations of H2CO lines and continuum at 1.3 mm towards Sgr B2(N) and Sgr B2(M) cores were carried out with the SMA. We imaged H 2CO line absorption against the continuum cores and the surrounding line emission clumps. The results show that the majority of the dense gas is falling into the major cores where massive stars have been formed. The filaments and clumps of the continuum and gas are detected outside of Sgr B2(N) and Sgr B2(M) cores. Both the spectra and moment analysis show the presence of outflows from Sgr B2(M) core. The H2CO gas in the red-shifted outflow of Sgr B2(M) appears to be excited by a non-LTE process which might be related to the shocks in the outflow.

Original languageEnglish
Article number073
Pages (from-to)468-473
Number of pages6
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2006 Dec 1

ASJC Scopus subject areas

  • General Physics and Astronomy


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