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The emission structure of formaldehyde megamasers
Baan, Willem A.1,2; An, Tao1,2,3; Kloeckner, Hans-Rainer4; Thomasson, Peter5
2017-07-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume469Issue:1Pages:916-929
Corresponding AuthorBaan, Willem A.(baan@astron.nl) ; An, Tao(antao@shao.ac.cn) ; Kloeckner, Hans-Rainer(hrk@mpifr-bonn.mpg.de)
AbstractThe formaldehyde megamaser emission has been mapped for the three host galaxies IC 860, IRAS 15107+0724 and Arp 220. Elongated emission components are found at the nuclear centres of all galaxies with an extent ranging between 30 and 100 pc. These components are superposed on the peaks of the nuclear continuum. Additional isolated emission components are found superposed in the outskirts of the radio continuum structure. The brightness temperatures of the detected features ranges from 0.6 to 13.4 x 10(4) K, which confirms their masering nature. The masering scenario is interpreted as amplification of the radio continuum by foreground molecular gas that is pumped by far-infrared radiation fields in these starburst environments of the host galaxies.
Keywordmasers stars: formation ISM: molecules galaxies: individual: IC 860, IRAS 15107+0724, Arp 220 galaxies: ISM radio lines: ISM
DOI10.1093/mnras/stx895
WOS KeywordWATER-VAPOR MASER ; OH MEGAMASER ; STAR-FORMATION ; MOLECULAR GAS ; ARP 220 ; STARBURST GALAXIES ; VLBI OBSERVATIONS ; VLA OBSERVATIONS ; METHANOL MASERS ; LINE SPECTRA
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000402825000063
PublisherOXFORD UNIV PRESS
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23049
Collection中国科学院紫金山天文台
Corresponding AuthorBaan, Willem A.; An, Tao; Kloeckner, Hans-Rainer
Affiliation1.Netherlands Inst Radio Astron ASTRON, NL-7991 PD Dwingeloo, Netherlands
2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
4.Max Planck Inst Radioastron, 69 Hugel, D-5300 Bonn, Germany
5.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England
Recommended Citation
GB/T 7714
Baan, Willem A.,An, Tao,Kloeckner, Hans-Rainer,et al. The emission structure of formaldehyde megamasers[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,469(1):916-929.
APA Baan, Willem A.,An, Tao,Kloeckner, Hans-Rainer,&Thomasson, Peter.(2017).The emission structure of formaldehyde megamasers.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,469(1),916-929.
MLA Baan, Willem A.,et al."The emission structure of formaldehyde megamasers".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 469.1(2017):916-929.
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