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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Class II 6.7 GHz methanol maser association with young massive cores revealed by ALMA
Proceedings of the International Astronomical Union, Volume 13, No. S336, Year 2017
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Description
The association of 6.7 GHz class II methanol (CH3OH) masers with ATLASGAL/ ALMA 0.9 mm massive dense cores is presented in this work from a statistical viewpoint. 42 of the 112 cores (37.5%) detected with the Atacama Compact Array (ACA) excite 6.7 GHz CH3OH masers. ACA cores have offsets 0.″17 to 4.″79 from the methanol multibeam survey (MMB), with a median of 2.″19. Approximately 90% of the MMB-associated cores are of masses > 40 M⊙. Because all the cores show evidence of outflow activity, and only a fraction of the cores excited CH3OH masers, we suggest that outflows precede the emergence of maser emission. This first ALMA survey of massive dense cores combined with the MMB survey along with other maser specie surveys is a promising tool to trace the evolutionary sequence of high-mass stars. © International Astronomical Union 2018.
Authors & Co-Authors
Chibueze, James O.
South Africa, Cape Town
Ska Africa
Nigeria, Naukka
University of Nigeria
South Africa, Potchefstroom
North-west University
Csengeri, Timea
Germany, Bonn
Max Planck Institute for Radio Astronomy
Tatematsu, Ken'ichi N.Ichi
Japan, Minato
National Institutes of Natural Sciences
Japan, Hayama
The Graduate University for Advanced Studies
Hasegawa, Tetsuo
Japan, Minato
National Institutes of Natural Sciences
Iguchi, Satoru
Japan, Minato
National Institutes of Natural Sciences
Japan, Hayama
The Graduate University for Advanced Studies
Alhassan, Jibrin Adejoh
Nigeria, Naukka
University of Nigeria
Higuchi, Aya E.
Japan, Wako
Riken the Institute of Physical and Chemical Research
Bontemps, Sylvain
France, Bordeaux
Université de Bordeaux
Menten, Karlm M.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Statistics
Authors: 9
Affiliations: 8
Identifiers
Doi:
10.1017/S1743921317011413
ISSN:
17439213
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative