Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-17T23:14:13.671Z Has data issue: false hasContentIssue false
  • English
  • Français

Class II 6.7 GHz Methanol Maser Association with Young Massive Cores Revealed by ALMA

Published online by Cambridge University Press:  16 July 2018

James O. Chibueze ,
Timea Csengeri ,
Ken’ichi Tatematsu ,
Tetsuo Hasegawa ,
Satoru Iguchi ,
Jibrin A. Alhassan ,
Aya E. Higuchi ,
Sylvain Bontemps  and
Karl M. Menten
James O. Chibueze
Affiliation:
SKA Africa, 3rd Floor, The Park, Park Road, Pinelands, Cape Town, 7405, South Africa email: jchibueze@ska.ac.za Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria, Carver Building, 1 University Road, Nsukka, Nigeria Space Research Unit, Physics Department, NorthWest University, Private Bag X6001, Potchefstroom, 2520, South Africa
Timea Csengeri
Affiliation:
Max Planck Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany email: tcsengeri@mpifr-bonn.mpg.de
Ken’ichi Tatematsu
Affiliation:
National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan The Graduate University for Advanced Studies), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Tetsuo Hasegawa
Affiliation:
National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Satoru Iguchi
Affiliation:
National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan The Graduate University for Advanced Studies), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Jibrin A. Alhassan
Affiliation:
Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria, Carver Building, 1 University Road, Nsukka, Nigeria
Aya E. Higuchi
Affiliation:
The Institute of Physical and Chemical Research (RIKEN), 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan
Sylvain Bontemps
Affiliation:
The Graduate University for Advanced Studies), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Karl M. Menten
Affiliation:
Max Planck Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany email: tcsengeri@mpifr-bonn.mpg.de
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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\rlap.″17 to 4\rlap.″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.

Keywords

stars: formationstars: winds, outflowsISM: H II regionssurveys
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe , September 2017 , pp. 247 - 250
Copyright
Copyright © International Astronomical Union 2018 

References

Bayandina, O. S., Val'tts, I. E., & Larionov, G. M., 2012, Astron. Rep., 56, 553Google Scholar
Breen, S. L., Ellingsen, S. P., Caswell, J. L., & Lewis, B. E., 2010, MNRAS, 401, 2219Google Scholar
Breen, S. L., Ellingsen, S. P., Caswell, J. L., et al. 2011, ApJ, 733, 80Google Scholar
Breen, S. L., Ellingsen, S. P., Contreras, Y., et al. 2013, MNRAS, 435, 524Google Scholar
Caswell, J. L., Fuller, G. A., Green, J. A., et al. 2010, MNRAS, 404, 1029Google Scholar
Caswell, J. L., Fuller, G. A., Green, J. A., et al. 2011, MNRAS, 417, 1964Google Scholar
Chibueze, J. O., Omodaka, T., Handa, T., et al. 2014, ApJ, 784, 114CrossRefGoogle Scholar
Chibueze, J. O., Csengeri, T., Tatematsu, K., et al. 2017, ApJ, 836, 59CrossRefGoogle Scholar
Csengeri, T., Bontemps, S., Wyrowski, F., et al. 2017b, A&A, 601, A60Google Scholar
Csengeri, T., Bontemps, S., Wyrowski, F., et al. 2017a, A&A, 600, L10Google Scholar
Codella, C., Lorenzani, A., Gallego, A. T., Cesaroni, R., & Moscadelli, L., 2004, A&A, 417, 615Google Scholar
de Villiers, H. M., Chrysostomou, A., Thompson, M. A., et al. 2015, MNRAS, 449, 119Google Scholar
Gerner, T., Beuther, H., Semenov, D., et al. 2014, A&A, 563, A97Google Scholar
Green, J. A., Caswell, J. L., Fuller, G. A., et al. 2012, MNRAS, 420, 3108CrossRefGoogle Scholar
Reid, M. J., 2007, Astrophysical Masers and their Environments, 242, 522Google Scholar
Urquhart, J. S., Moore, T. J. T., Schuller, F., et al. 2013, MNRAS, 431, 1752Google Scholar
Urquhart, J. S., Thompson, M. A., Moore, T. J. T., et al. 2013, MNRAS, 435, 400CrossRefGoogle Scholar