Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    High-mass star-forming cloud G0.38+0.04 in the Galactic center dust ridge contains H2CO and SiO masers

    241234_241234.pdf (349.9Kb)
    Access Status
    Open access
    Authors
    Ginsburg, A.
    Walsh, Andrew
    Henkel, C.
    Jones, P.
    Cunningham, M.
    Kauffmann, J.
    Pillai, T.
    Mills, E.
    Ott, J.
    Kruijssen, J.
    Menten, K.
    Batersby, C.
    Rathborne, J.
    Contreras, Y.
    Longmore, S.
    Walker, D.
    Dawson, J.
    Lopez, J.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ginsburg, A. and Walsh, A. and Henkel, C. and Jones, P. and Cunningham, M. and Kauffmann, J. and Pillai, T. et al. 2015. High-mass star-forming cloud G0.38+0.04 in the Galactic center dust ridge contains H2CO and SiO masers. Astronomy & Astrophysics. 584 (2015).
    Source Title
    Astronomy & Astrophysics
    DOI
    10.1051/0004-6361/201527452
    ISSN
    0004-6361
    School
    Curtin Institute of Radio Astronomy (Physics)
    Remarks

    Reproduced with permission from Astronomy & Astrophysics, © ESO

    URI
    http://hdl.handle.net/20.500.11937/18712
    Collection
    • Curtin Research Publications
    Abstract

    We have discovered a new H2CO (formaldehyde) 11,0−11,1 4.82966 GHz maser in Galactic center Cloud C, G0.38+0.04. At the time of acceptance, this is the eighth region to contain an H2CO maser detected in the Galaxy. Cloud C is one of only two sites of confirmed high-mass star formation along the Galactic center ridge, affirming that H2CO masers are exclusively associated with high-mass star formation. This discovery led us to search for other masers, among which we found new SiO vibrationally excited masers, making this the fourth star-forming region in the Galaxy to exhibit SiO maser emission. Cloud C is also a known source of CH3OH Class-II and OH maser emission. There are now two known regions that contain both SiO and H2CO masers in the CMZ, compared to two SiO and six H2CO in the Galactic disk, while there is a relative dearth of H2O and CH3OH Class-II masers in the CMZ. SiO and H2CO masers may be preferentially excited in the CMZ, perhaps because of higher gas-phase abundances from grain destruction and heating, or alternatively H2O and CH3OH maser formation may be suppressed in the CMZ. In any case, Cloud C is a new testing ground for understanding maser excitation conditions.

    Related items

    Showing items related by title, author, creator and subject.

    • MALT-45: A 7mm survey of the southern Galaxy - II. ATCA follow-up observations of 44GHz class I methanol masers
      Jordan, Christopher; Walsh, Andrew; Breen, S.; Ellingsen, S.; Voronkov, M.; Hyland, L. (2017)
      We detail interferometric observations of 44 GHz class I methanol masers detected by MALT-45 (a 7 mm unbiased auto-correlated spectral-line Galactic-plane survey) using the Australia Telescope Compact Array. We detect 238 ...
    • An oh(1720 MHZ) maser and a nonthermal radio source insgr b2(m): An snr-molecular cloud interaction site?
      Yusef-Zadeh, F.; Cotton, W.; Wardle, M.; Intema, Hubertus (2016)
      Sgr B2 is a well-known star-forming molecular cloud complex in the Galactic center region showing evidence of high energy activity as traced by the Kα neutral Fe I line at 6.4 keV, as well as GeV and TeV γ-ray emission. ...
    • The 6-GHz multibeam maser survey – I. Techniques
      Green, J.; Caswell, J.; Fuller, G.; Avison, A.; Breen, S.; Brooks, K.; Burton, M.; Chrysostomou, A.; Cox, J.; Diamond, P.; Ellingsen, S.; Gray, M.; Hoare, M.; Masheder, M.; McClure-Griffiths, N.; Pestalozzi, M.; Phillips, C.; Quinn, L.; Thompson, M.; Voronkov, M.; Walsh, Andrew; Ward-Thompson, D.; Wong-McSweeney, D.; Yates, J.; Cohen, R. (2009)
      A new seven-beam 6-7GHz receiver has been built to survey the Galaxy and the Magellanic Clouds for newly forming high-mass stars that are pinpointed by strong methanol maser emission at 6668MHz. The receiver was jointly ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.