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

Research output: Contribution to journalArticle

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Abstract

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
Volume54
Issue number1
DOIs
Publication statusPublished - 2006 Dec 1

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fragmentation
clumps
continuums
gases
H lines
spectral mixture analysis
massive stars
falling
filaments
shock
moments

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Qin, S. L., Zhao, J. H., Moran, J. M., Marrone, D., Patel, N., Liu, S. Y., ... Wang, J. J. (2006). Infall, fragmentation, and outflow in Sgr B2. Journal of Physics: Conference Series, 54(1), 468-473. [073]. https://doi.org/10.1088/1742-6596/54/1/073

Infall, fragmentation, and outflow in Sgr B2. / Qin, Sheng Li; Zhao, Jun Hui; Moran, James M.; Marrone, Daniel; Patel, N.; Liu, Sheng Yuan; Kuan, Yi Jehng; Wang, Jun Jie.

In: Journal of Physics: Conference Series, Vol. 54, No. 1, 073, 01.12.2006, p. 468-473.

Research output: Contribution to journalArticle

Qin, SL, Zhao, JH, Moran, JM, Marrone, D, Patel, N, Liu, SY, Kuan, YJ & Wang, JJ 2006, 'Infall, fragmentation, and outflow in Sgr B2', Journal of Physics: Conference Series, vol. 54, no. 1, 073, pp. 468-473. https://doi.org/10.1088/1742-6596/54/1/073
Qin SL, Zhao JH, Moran JM, Marrone D, Patel N, Liu SY et al. Infall, fragmentation, and outflow in Sgr B2. Journal of Physics: Conference Series. 2006 Dec 1;54(1):468-473. 073. https://doi.org/10.1088/1742-6596/54/1/073
Qin, Sheng Li ; Zhao, Jun Hui ; Moran, James M. ; Marrone, Daniel ; Patel, N. ; Liu, Sheng Yuan ; Kuan, Yi Jehng ; Wang, Jun Jie. / Infall, fragmentation, and outflow in Sgr B2. In: Journal of Physics: Conference Series. 2006 ; Vol. 54, No. 1. pp. 468-473.
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