12.2-GHz methanol and 1.6-GHz hydroxyl masers associated with new 6.7-GHz methanol masers
نویسندگان
چکیده
منابع مشابه
ATLASGAL — Environments of 6.7 GHz methanol masers
Using the 870-μm APEX Telescope Large Area Survey of the Galaxy (ATLASGAL), we have identified 577 submillimetre continuum sources with masers from the methanol multibeam (MMB) survey in the region 280 < l < 20; | b | < 1.5. 94 per cent of methanol masers in the region are associated with sub-millimetre dust emission. We estimate masses for ∼450 maser-associated sources and find that methanol m...
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We have used the Australia Telescope Compact Array (ATCA) to search for continuum emission toward three strong 6.7-GHz methanol maser sources. For two of the sources, G339.88-1.26 and NGC 6334F (G351.42+0.64), we detect continuum emission closely associated with the methanol masers. A further three clusters of masers showed no radio continuum emission above our sensitivity limit of 1-5 mJy. We ...
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Methanol masers are often detected in regions of intense star formation. Several studies in the last decade indicate that they may even be the earliest signpost of a high-mass star-forming region. Their powerful emission make them very good candidates for observations using both single–dish telescopes and interferometers, the latter allows detailed structural and dynamical studies of these obje...
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In the early days of methanol maser discoveries the 9 2 − 10 1 A + transition at 23.1 GHz was found to exhibit maser characteristics in the northern star-forming region W3(OH), and probable maser emission in two other sources. Attention subsequently turned to the 6.6-GHz 5 1 − 6 0 A + methanol maser transition, which has proved a valuable tracer of early high-mass star formation. We have undert...
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We have used the Australia Telescope Compact Array (ATCA) to search for 6.7-GHz methanol maser emission towards 87 galaxies.We chose the target sources using several criteria, including far-IR luminosities and the presence of known OH megamasers. In addition, we searched for methanol masers in the nearby starburst galaxy NGC 253, making a full spectral-line synthesis image. No emission was dete...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1994
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/269.2.257