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Data: H₂O, CH3OH_I

CHO12 - Water and Methanol Maser Activities in the NGC 2024 FIR 6 Region

Short title: Choi et al. (2012)
Authors: Choi, Minho Kang, Miju Byun, Do-Young Lee, Jeong-Eun
Journal: The Astrophysical Journal, Volume 759, Issue 2, article id. 136, 7 pp. (2012).
Bibcode: 2012ApJ...759..136C

PDF: CHO12.pdf

• Target type: High_mass_SFR
  Transitions: CH3OH_36(I),CH3OH_44(I),CH3OH_95(I),CH3OH_132(I)
  

• Abstract

  The NGC 2024 FIR 6 region was observed in the water maser line at 22 GHz and the methanol class I maser lines at 44, 95, and 133 GHz. The water maser spectra displayed several velocity components and month-scale time variabilities. Most of the velocity components may be associated with FIR 6n, while one component was associated with FIR 4. A typical lifetime of the water maser velocity components is about eight months. The components showed velocity fluctuations with a typical drift rate of about 0.01 km s-1 day-1. The methanol class I masers were detected toward FIR 6. The methanol emission is confined within a narrow range around the systemic velocity of the FIR 6 cloud core. The methanol masers suggest the existence of shocks driven by either the expanding H II region of FIR 6c or the outflow of FIR 6n. eprintid: arXiv:1209.5487

  Target sources: 6.9mm continuum source FIR 6c (Choi et al. 2012) Comments: Methanol observations of NGC 2024 FIR 6 region

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DSS colored 2MASS colored WISE colored SDSS color IRAC color I1,I2,I4 GLIMPSE 360 PACS color (70-160 um) SPIRE color (250-500 um) NVSS (1.4GHz) ATLASGAL 870 um ATLASGAL 870 um + Planck Bolocam 1.1 mm UKIDSS K 2MASS K