PMO OpenIR  > 星系中的恒星形成研究团组
WATER VAPOR IN NEARBY INFRARED GALAXIES AS PROBED BY HERSCHEL
Yang, Chentao1,2,3; Gao, Yu2; Omont, A.4,5; Liu, Daizhong2,3; Isaak, K. G.6; Downes, D.7; van der Werf, P. P.8; Lu, Nanyao9
2013-07-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume771Issue:2Pages:0
Corresponding AuthorYang, CT (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China. Email: 0
AbstractWe report the first systematic study of the submillimeter water vapor rotational emission lines in infrared (IR) galaxies based on the Fourier Transform Spectrometer (FTS) data of Herschel SPIRE. Among the 176 galaxies with publicly available FTS data, 45 have at least one H2O emission line detected. The H2O line luminosities range from similar to 1 x 10(5) L-circle dot to similar to 5 x 10(7) L-circle dot while the total IR luminosities (L-IR) have a similar spread (similar to 1-300 x 10(10) L-circle dot). In addition, emission lines of H2O+ and (H2O)-O-18 are also detected. H2O is found, for most galaxies, to be the strongest molecular emitter after CO in FTS spectra. The luminosity of the five most important H2O lines is near-linearly correlated with L-IR, regardless of whether or not strong active galactic nucleus signature is present. However, the luminosity of H2O(2(11)-2(02)) and H2O(2(20)-2(11)) appears to increase slightly faster than linear with L-IR. Although the slope turns out to be slightly steeper when z similar to 2-4 ULIRGs are included, the correlation is still closely linear. We find that L-H2O/L-IR decreases with increasing f(25)/f(60), but see no dependence on f(60)/f(100), possibly indicating that very warm dust contributes little to the excitation of the submillimeter H2O lines. The average spectral line energy distribution (SLED) of the entire sample is consistent with individual SLEDs and the IR pumping plus collisional excitation model, showing that the strongest lines are H2O(2(02)-1(11)) and H2O(3(21)-3(12)).
KeywordGalaxies: Ism Galaxies: Starburst Infrared: Ism Ism: Molecules
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/771/2/L24
WOS KeywordMOLECULAR GAS ; ARP 220 ; STAR-FORMATION ; MARKARIAN 231 ; NGC 4418 ; SPIRE ; H2O ; EMISSION ; OH ; SPECTROMETER
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000321036000006
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9881
Collection星系中的恒星形成研究团组
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.UPMC Univ Paris 06, Inst Astrophys Paris, UMR7095, F-75014 Paris, France
5.Inst Astrophys, CNRS, UMR7095, F-75014 Paris, France
6.Estec, ESA Astrophys Miss Div, NL-2200 AG Noordwijk, Netherlands
7.Inst Radioastron Millimetr IRAM, F-38406 St Martin Dheres, France
8.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands
9.CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA
Recommended Citation
GB/T 7714
Yang, Chentao,Gao, Yu,Omont, A.,et al. WATER VAPOR IN NEARBY INFRARED GALAXIES AS PROBED BY HERSCHEL[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,771(2):0.
APA Yang, Chentao.,Gao, Yu.,Omont, A..,Liu, Daizhong.,Isaak, K. G..,...&Lu, Nanyao.(2013).WATER VAPOR IN NEARBY INFRARED GALAXIES AS PROBED BY HERSCHEL.ASTROPHYSICAL JOURNAL LETTERS,771(2),0.
MLA Yang, Chentao,et al."WATER VAPOR IN NEARBY INFRARED GALAXIES AS PROBED BY HERSCHEL".ASTROPHYSICAL JOURNAL LETTERS 771.2(2013):0.
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