High mass star formation in the IRAS 17233-3606 region: a new nearby and bright hot core in the southern sky

Abstract

We present molecular line observations of the massive star forming region IRAS 17233-3606 aimed at studying the molecular core associated with the source. The observations were made using the Atacama Pathfinder Experiment telescope in the CO (3-2) and HCO^+ (4-3) transitions, and in the CH_3OH (6_K-5_K), (7_K-6_K) and CH_3CN (16_K-15_K) bands. For the CO(3-2) and HCO^+ (4-3) transitions, we obtained maps with a size of 70''\times 70''. The typical angular resolution of the data is ~18''. Our observations reveal an exceptionally rich molecular spectrum, a signpost of hot core activity. Comparisons with two other prominent southern hot cores were made through observations in the same frequency setups. We also detected a bipolar outflow in CO (3-2) and HCO^+ (4-3) lines. Modelling reveals a hot core of size ~3'' and a temperature of 150 K in the IRAS17233-3606 region. The parameters of the molecular outflow are derived through the analysis of the CO (3-2) emission, and are typical of outflows driven by high-mass young stellar objects.

arXiv comment9 pages, 10 figures (plus 8 figures as Online material), accepted by A&A

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Cited by in corpus (14)

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• Observations of 6.7 GHz Methanol Masers with EAVN I: VLBI Images of the first Epoch of Observations
• Hot high-mass accretion disk candidates
• Extremely large and hot multilayer Keplerian disk around the O-type protostar W51N: The precursors of the HCHII regions?
• Evidence of a SiO collimated outflow from a massive YSO in IRAS 17233-3606
• Unveiling a Compact Cluster of Massive and Young Stars in IRAS 17233-3606
• ALMA-IMF XI: The sample of hot core candidates A rich population of young high-mass proto-stars unveiled by the emission of methyl formate
• The molecular distribution of the IRDC G351.77-0.51
• Extremely high velocity gas from the massive YSOs in IRAS 17233-3606
• Characterising the high-mass star forming filament G351.776--0.527 with Herschel and APEX dust continuum and gas observations
• The SiO outflow from IRAS 17233-3603 at high resolution
• ALMA-IMF XVIII: The assembly of a star cluster: Dense N${}_2$H${}^{+}$ (1-0) kinematics in the massive G351.77 protocluster
• A study of three southern high-mass star-forming regions
• A multi-line study of the filamentary infrared dark cloud G351.78-0.54