Showing 2011 · astro-ph.GAShow all

12 papers · 2 filters

astro-ph.GA2011★ 252 cited

An improved map of the Galactic Faraday sky

N. Oppermann, H. Junklewitz, G. Robbers +28

We aim to summarize the current state of knowledge regarding Galactic Faraday rotation in an all-sky map of the Galactic Faraday depth. For this we have assembled the most extensiv…

astro-ph.GA2011★ 189 cited

Spectral imaging of the Central Molecular Zone in multiple 3-mm molecular lines

P. A. Jones, M. G. Burton, M. R. Cunningham +8

We have mapped 20 molecular lines in the Central Molecular Zone (CMZ) around the Galactic Centre, emitting from 85.3 to 93.3 GHz. This work used the 22-m Mopra radio telescope in A…

astro-ph.GA2011★ 28 cited

Organic chemistry of low-mass star-forming cores I: 7 mm spectroscopy of Chamaeleon MMS1

Martin A. Cordiner, Steven B. Charnley, Eva S. Wirström +1

Observations are presented of emission lines from organic molecules at frequencies 32 - 50 GHz in the vicinity of Chamaeleon MMS1. This chemically-rich dense cloud core habours an…

astro-ph.GA2011★ 153 cited

The Millimeter Astronomy Legacy Team 90 GHz (MALT90) Pilot Survey

Jonathan B. Foster, James M. Jackson, Elizabeth Barris +11

We describe a pilot survey conducted with the Mopra 22-m radio telescope in preparation for the Millimeter Astronomy Legacy Team Survey at 90 GHz (MALT90). We identified 182 candid…

astro-ph.GA2011★ 22 cited

A Spitzer Space Telescope survey of massive young stellar objects in the G333.2-0.4 giant molecular cloud

Janet P. Simpson, Angela S. Cotera, Michael G. Burton +3

The G333 giant molecular cloud contains a few star clusters and H II regions, plus a number of condensations currently forming stars. We have mapped 13 of these sources with the ap…

astro-ph.GA2011★ 51 cited

Optical Properties of High-Frequency Radio Sources from the Australia Telescope 20 GHz (AT20G) Survey

Elizabeth K. Mahony, Elaine M. Sadler, Scott M. Croom +7

Our current understanding of radio-loud AGN comes predominantly from studies at frequencies of 5 GHz and below. With the recent completion of the Australia Telescope 20 GHz (AT20G)…

astro-ph.GA2011★ 364 cited

A 100-parsec elliptical and twisted ring of cold and dense molecular clouds revealed by Herschel around the Galactic Center

S. Molinari, J. Bally, A. Noriega-Crespo +38

Thermal images of cold dust in the Central Molecular Zone of the Milky Way, obtained with the far-infrared cameras on-board the Herschel satellite, reveal a 3x10^7 solar masses rin…

astro-ph.GA2011★ 195 cited

The H_2O southern Galactic Plane Survey (HOPS): I. Techniques and H_2O maser data

A. J. Walsh, S. L. Breen, T. Britton +19

We present first results of the H_2O Southern Galactic Plane Survey (HOPS), using the Mopra radiotelescope with a broad band backend and a beam size of about 2'. We have observed 1…

astro-ph.GA2011★ 63 cited

Major structures of the inner Galaxy delineated by 6.7-GHz methanol masers

J. A. Green, J. L. Caswell, N. M. McClure-Griffiths +9

We explore the longitude-velocity distribution of 6.7-GHz methanol masers in the context of the inner structure of our Galaxy. We analyse the correlation in velocities within this…

astro-ph.GA2011★ 11 cited

Observations and radiative transfer modelling of a massive dense cold core in G333

N. Lo, M. P. Redman, P. A. Jones +4

Cold massive cores are one of the earliest manifestations of high mass star formation. Following the detection of SiO emission from G333.125-0.562, a cold massive core, further inv…

astro-ph.GA2011★ 69 cited

The Galactic Census of High- and Medium-mass Protostars. I. Catalogues and First Results from Mopra HCO+ Maps

Peter J. Barnes, Yoshinori Yonekura, Yasuo Fukui +10

The Census of High- and Medium-mass Protostars (CHaMP) is the first large-scale, unbiased, uniform mapping survey at sub-parsec scale resolution of 90 GHz line emission from massiv…

astro-ph.GA2011★ 13 cited

IRAS 15099-5856: Remarkable Mid-Infrared Source with Prominent Crystalline Silicate Emission Embedded in the Supernova Remnant MSH15-52

Bon-Chul Koo, Christopher F. McKee, Kyung-Won Suh +18

We report new mid-infrared observations of the remarkable object IRAS 15099-5856 using the space telescopes AKARI and Spitzer, which demonstrate the presence of prominent crystalli…