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Here we present high spatial resolution (<1 arcsecond) observations of molecular emission in Orion-KL conducted using the Combined Array for Research in Millimeter-Wave Astronomy (CARMA). This work was motivated by recent millimeter…

Astrophysics of Galaxies · Physics 2015-06-05 Susanna L. Widicus Weaver , Douglas N. Friedel

The Kleinmann-Low nebula in Orion (Orion-KL) is the nearest example of a high-mass star-forming environment. For the first time, we complemented 1.3 mm Submillimeter Array (SMA) interferometric line survey with IRAM 30 m single-dish…

Solar and Stellar Astrophysics · Physics 2016-05-04 S. Feng , H. Beuther , T. Henning , D. Semenov , Aina. Palau , E. A. C. Mills

It has recently been suggested that chemical processing can shape the spatial distributions of complex molecules in the Orion-KL region and lead to the nitrogen-oxygen "chemical differentiation" seen in previous observations of this source.…

Astrophysics of Galaxies · Physics 2015-06-05 D. N. Friedel , S. L. Widicus Weaver

Orion-KL is a well known high mass star forming region that has long been the target of spectral line surveys and searches for complex molecules. One spectral window where the region had never been surveyed is around wavelengths of…

Astrophysics of Galaxies · Physics 2017-09-27 Douglas N. Friedel , Leslie W. Looney

The Orion Kleinmann-Low nebula (Orion KL) is notoriously complex and exhibits a range of physical and chemical components. We conducted high angular resolution (sub-arcsecond) observations of $^13$CH$_{3}$OH $\nu=0$…

Astrophysics of Galaxies · Physics 2022-01-12 Olivia H. Wilkins , P. Brandon Carroll , Geoffrey A. Blake

We present high resolution, Combined Array for Research in Millimeter-Wave Astronomy (CARMA), $\lambda$=1mm observations of several molecular species toward Orion-KL. These are the highest spatial and spectral resolution 1mm observations of…

Astrophysics · Physics 2009-11-13 D. N. Friedel , L. E. Snyder

This work reports a high spatial resolution observations toward Orion KL region with high critical density lines of CH$_{3}$CN (12$_{4}$-11$_{4}$) and CH$_{3}$OH (8$_{-1, 8}$-7$_{0, 7}$) as well as continuum at $\sim$1.3 mm band. The…

Solar and Stellar Astrophysics · Physics 2015-06-22 Yuefang Wu , Tie Liu , Sheng-Li Qin

We investigate the chemical segregation of complex O-bearing species (including the largest and most complex ones detected to date in space) towards Orion KL, the closest high-mass star-forming region. The molecular line images obtained…

Astrophysics of Galaxies · Physics 2018-12-05 Belén Tercero , Sara Cuadrado , Alicia López , Nathalie Brouillet , Didier Despois , José Cernicharo

As part of the first high resolution far-IR spectral survey of the Orion KL region (Lerate et al. 2006), we observed 20 CO emission lines with Jup=16 to Jup=39 (upper levels from approx 752 K to 4294 K above the ground state). Observations…

We present a high angular resolution map of 850 um continuum emission of the Orion Molecular Cloud-3 (OMC 3) obtained with the Submillimeter Array (SMA); the map is a mosaic of 85 pointings covering an approximate area of 6'.5 x 2'.0 (0.88…

Astrophysics of Galaxies · Physics 2015-06-12 Satoko Takahashi , Paul T. P. Ho , Paula S. Teixeira , Luis A. Zapata , Yu-Nung Su

We present sensitive high angular resolution submillimeter and millimeter observations of torsionally/vibrationally highly excited lines of the CH$_3$OH, HC$_3$N, SO$_2$, and CH$_3$CN molecules and of the continuum emission at 870 and 1300…

Astrophysics of Galaxies · Physics 2015-05-19 Luis A. Zapata , Johannes Schmid-Burgk , Karl M. Menten

Submillimeter Array observations of Orion-KL at 1'' resolution in the 440mu/690GHz band reveal new insights about the continuum and line emission of the region. The 440mu continuum flux density measurement from source I allows us to…

We present sensitive high angular resolution ($\sim$ 0.1$''$ -- 0.3$''$) continuum ALMA (The Atacama Large Millimeter/Submillimeter Array) observations of the archetypal hot core located in Orion-KL. The observations were made in five…

Astrophysics of Galaxies · Physics 2017-10-04 M. T. Orozco-Aguilera , Luis A. Zapata , Tomoya Hirota , Sheng-Li Qin , Masqué Josep M.

Massive star-forming regions exhibit an extremely rich and diverse chemistry, which in principle provides a wealth of molecular probes, as well as laboratories for interstellar prebiotic chemistry. Since the chemical structure of these…

Aims: Our aim is to identify the dominant molecular cooling lines and characteristic emission features in the 1.3 mm window of distinct regions in the northern part of the Orion A molecular cloud. By defining and analysing template regions,…

Astrophysics of Galaxies · Physics 2020-04-15 N. Brinkmann , F. Wyrowski , J. Kauffmann , D. Colombo , K. M. Menten , X. D. Tang , R. Güsten

The different spatial distributions of N-bearing and O-bearing species, as is well known towards Orion~KL, is one of the long-lasting mysteries. We conducted a survey observation and chemical modeling study to investigate if the different…

Solar and Stellar Astrophysics · Physics 2018-07-18 Taiki Suzuki , Masatoshi Ohishi , Masao Saito , Tomoya Hirota , Liton Majumdar , Valentine Wakelam

We present observational results of the thermal dust continuum emission and its linear polarization in one of the nearest massive star-forming sites Orion BN/KL in Orion Molecular Cloud-1. The observations were carried out with the…

Astrophysics of Galaxies · Physics 2015-05-19 Ya-Wen Tang , Paul T. P. Ho , Patrick M. Koch , Ramprasad Rao

We have carried out high resolution observations with Atacama Large Millimeter/Submillimeter Array (ALMA) of continuum emission from Orion KL region. We identify 11 compact sources at ALMA band 6 (245 GHz) and band 7 (339 GHz), including…

Solar and Stellar Astrophysics · Physics 2015-06-23 Tomoya Hirota , Mi Kyoung Kim , Yasutaka Kurono , Mareki Honma

We present new, wide and deep images in the 1.1 mm continuum and the $^{12}$CO ($J$=1-0) emission toward the northern part of the Orion A Giant Molecular Cloud (Orion-A GMC). The 1.1 mm data were taken with the AzTEC camera mounted on the…

Orion KL is one of the most frequently observed sources in the Galaxy, and the site where many molecular species have been discovered for the first time. With the availability of powerful wideband backends, it is nowadays possible to…

Astrophysics of Galaxies · Physics 2017-09-20 J. R. Rizzo , B. Tercero , J. Cernicharo
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