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Related papers: Digging into NGC 6334I(N): Multiwavelength Imaging…

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Using the SMA and VLA, we have imaged the massive protocluster NGC6334I(N) at high angular resolution (0.5"~650AU) from 6cm to 0.87mm, detecting 18 new compact continuum sources. Three of the new sources are coincident with…

Solar and Stellar Astrophysics · Physics 2015-03-30 T. R. Hunter , C. L. Brogan , C. J. Cyganowski , K. H. Young

We present VLA and ALMA imaging of the deeply-embedded protostellar cluster NGC6334I from 5 cm to 1.3 mm at angular resolutions as fine as 0.17 (220 AU). The dominant hot core MM1 is resolved into seven components at 1.3 mm, clustered…

Astrophysics of Galaxies · Physics 2016-12-14 C. L. Brogan , T. R. Hunter , C. J. Cyganowski , C. J. Chandler , R. Friesen , R. Indebetouw

Based on sub-arcsecond Atacama Large Millimeter/submillimeter Array (ALMA) and Submillimeter Array (SMA) 1.3 mm continuum images of the massive protocluster NGC 6334I obtained in 2015 and 2008, we find that the dust emission from MM1 has…

Solar and Stellar Astrophysics · Physics 2017-03-22 T. R. Hunter , C. L. Brogan , G. MacLeod , C. J. Cyganowski , C. J. Chandler , J. O. Chibueze , R. Friesen , R. Indebetouw , C. Thesner , K. H. Young

We report the first sub-arcsecond VLA imaging of 6 GHz continuum, methanol maser, and excited-state hydroxyl maser emission toward the massive protostellar cluster NGC6334I following the recent 2015 outburst in (sub)millimeter continuum…

Using the Submillimeter Array (SMA), we have imaged the 1.3 millimeter continuum emission at the center of the massive star-forming regions NGC 6334 I and I(N). In both regions, the SMA observations resolve the emission into multiple…

Astrophysics · Physics 2008-11-26 T. R. Hunter , C. L. Brogan , S. T. Megeath , K. M. Menten , H. Beuther , S. Thorwirth

In recent years, dramatic outbursts have been identified toward massive protostars via infrared and millimeter dust continuum and molecular maser emission. The longest lived outburst ($>6$ yr) persists in NGC6334I-MM1, a deeply-embedded…

We compare multi-epoch sub-arcsecond VLA imaging of the 22 GHz water masers toward the massive protocluster NGC6334I observed before and after the recent outburst of MM1B in (sub)millimeter continuum. Since the outburst, the water maser…

Solar and Stellar Astrophysics · Physics 2018-10-24 C. L. Brogan , T. R. Hunter , C. J. Cyganowski , J. O. Chibueze , R. K. Friesen , T. Hirota , G. C. MacLeod , B. A. McGuire , A. M. Sobolev

We present sensitive, high angular resolution 1.3 cm and 7 mm observations of the massive core NGC 6334 I(N), a region known to be undergoing massive star formation. At 1.3 cm we detect three sources, of which two had been previously…

Astrophysics · Physics 2009-11-11 Luis F. Rodriguez , Luis A. Zapata , Paul T. P. Ho

A 5'x5' region encompassing NGC6334I and I(N) has been mapped at a wavelength of 3mm (from 83.5 to 115.5GHz) with the Mopra telescope at an angular resolution between 33 arcsec and 36 arcsec. This investigation has made use of the recently…

Astrophysics of Galaxies · Physics 2015-05-18 A. J. Walsh , S. Thorwirth , H. Beuther , M. G. Burton

We present (sub)millimeter imaging at 0.5'' resolution of the massive star-forming region G358.93-0.03 acquired in multiple epochs at 2 and 3 months following the recent flaring of its 6.7 GHz methanol maser emission. Using SMA and ALMA, we…

We report the first multi-epoch milliarcsecond resolution imaging of the 6.7-GHz class II methanol maser emission associated with the high-mass protocluster system NGC6334I. The observations covered a period of over 10 years in four epochs…

We present the first subarcsecond submillimeter images of the enigmatic ultracompact HII region (UCHII) G5.89-0.39. Observed with the SMA, the 875 micron continuum emission exhibits a shell-like morphology similar to longer wavelengths. By…

Astrophysics · Physics 2015-03-30 T. R. Hunter , C. L. Brogan , R. Indebetouw , C. J. Cyganowski

S255N is a luminous far-infrared source that contains many indications of active star formation but lacks a prominent near-infrared stellar cluster. We present mid-infrared through radio observations aimed at exploring the evolutionary…

Astrophysics · Physics 2009-06-23 C. J. Cyganowski , C. L. Brogan , T. R. Hunter

We find strong evidence for outflows originating in the dense molecular core NGC 6334 I(North): a 1000 Msol molecular core distinguished by its lack of HII regions and mid-IR emission. New observations were obtained of the SiO 2-1 and 5-4…

Astrophysics · Physics 2009-10-31 S. T. Megeath , A. R. Tieftrunk

Aims: Investigation of the dense gas, the outflows and the continuum emission from the massive twin cores NGC6334I and I(N) at high spatial resolution. Methods: We imaged the region with the Australia Telescope Compact Array (ATCA) at 3.4mm…

Astrophysics · Physics 2009-11-13 H. Beuther , A. J. Walsh , S. Thorwirth , Q. Zhang , T. R. Hunter , S. T. Megeath , K. M. Menten

We present the first results of a pilot program to conduct an ALMA Band 10 spectral line survey of the high-mass star-forming region NGC 6334I. The observations were taken in exceptional weather conditions (0.19 mm precipitable water) with…

NGC6334I and I(N) have been observed with the Swedish-ESO Submillimetre Telescope, SEST, at wavelengths of 3, 2, and 1.3 mm. Especially NGC6334 I shows rich emission from many different molecules, comparable in line density to prototypical…

We present Submillimeter Array (SMA) observations at 345 GHz towards the intermediate/high-mass cluster-forming region NGC 6334 V. From the dust emission we spatially resolve three dense condensations, the brightest one presenting the…

We combine multifrequency observations from the millimeter to near infrared wavelengths that demonstrate the spatial distributions of H2, CO, and NH3 emission, which are all manifestations of various shocks driven by outflows of deeply…

Following an eruptive accretion event in NGC6334I-MM1, flares in the various maser species, including water masers, were triggered. We report the observed relative proper motion of the highly variable water masers associated with the…

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