QUANTIFYING THE HEATING SOURCES FOR MID-INFRARED DUST EMISSIONS IN GALAXIES: THE CASE OF M 81
文献类型：期刊论文
| 作者 | Lu, N.1; Bendo, G. J.2; Boselli, A.3,4; Baes, M.5; Wu, H.6; Madden, S. C.7; De Looze, I.5; Remy-Ruyer, A.7,8; Boquien, M.9; Wilson, C. D.10 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2014-12-20 |
| 卷号 | 797期号:2页码:129 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: individual (M 81) galaxies: ISM galaxies: star formation infrared: galaxies infrared: ISM ISM: lines and bands |
| 英文摘要 | With the newly available photometric images at 250 and 500 mu m from the Herschel Space Observatory, we study quantitative correlations over a sub-kiloparsec scale among three distinct emission components in the interstellar medium of the nearby spiral galaxy M81 (NGC 3031): (1) I-8 or I-24, the surface brightness of the mid-infrared emission observed in the Spitzer Space Telescope 8 or 24 mu m band, with I-8 and I-24 being dominated by the emissions from polycyclic aromatic hydrocarbons (PAHs) and very small grains (VSGs) of dust, respectively; (2) I-500, that of the cold dust continuum emission in the Herschel Space Observatory 500 mu m band, dominated by the emission from large dust grains heated by evolved stars; and (3) I-H alpha, a nominal surface brightness of the H alpha line emission, from gas ionized by newly formed massive stars. The results from our correlation study, free from any assumption on or modeling of dust emissivity law or dust temperatures, present solid evidence for significant heating of PAHs and VSGs by evolved stars. In the case of M81, about 67% (48%) of the 8 mu m (24 mu m) emission derives its heating from evolved stars, with the remainder attributed to radiation heating associated with ionizing stars. |
| 学科主题 | 天文和天体物理 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIFFUSE IONIZED-GAS ; AROMATIC-HYDROCARBON EMISSION ; STAR-FORMATION RATES ; NEAR-INFRARED CONTINUUM ; H-ALPHA ; SPIRAL GALAXIES ; INTERSTELLAR DUST ; VIRGO CLUSTER ; SMALL GRAINS ; M81 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000346291600057 |
| 公开日期 | 2015-05-22 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/11560]  |
| 专题 | 紫金山天文台_分子云与恒星形成研究团组 |
| 作者单位 | 1.CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA 2.Univ Manchester, Sch Phys & Astron, Jordrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England 3.Univ Aix Marseille, LAM, F-13388 Marseille, France 4.CNRS, UMR7326, F-13388 Marseille, France 5.Univ Ghent, Sterrenkundig Observat, B-9000 Ghent, Belgium 6.Chinese Acad Sci, Natl Astron Observat, Key Lab Opt Astron, Beijing 100012, Peoples R China 7.Univ Paris 07, CEA, Lab AIM, IRFU Serv Astrophys, F-91191 Gif Sur Yvette, France 8.CNRS, Inst Astrophys Spatiale, UMR8617, F-91405 Orsay, France 9.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England 10.McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada |
| 推荐引用方式 GB/T 7714 | Lu, N.,Bendo, G. J.,Boselli, A.,et al. QUANTIFYING THE HEATING SOURCES FOR MID-INFRARED DUST EMISSIONS IN GALAXIES: THE CASE OF M 81[J]. ASTROPHYSICAL JOURNAL,2014,797(2):129. |
| APA | Lu, N..,Bendo, G. J..,Boselli, A..,Baes, M..,Wu, H..,...&Zhao, Y..(2014).QUANTIFYING THE HEATING SOURCES FOR MID-INFRARED DUST EMISSIONS IN GALAXIES: THE CASE OF M 81.ASTROPHYSICAL JOURNAL,797(2),129. |
| MLA | Lu, N.,et al."QUANTIFYING THE HEATING SOURCES FOR MID-INFRARED DUST EMISSIONS IN GALAXIES: THE CASE OF M 81".ASTROPHYSICAL JOURNAL 797.2(2014):129. |
入库方式： OAI收割
来源：紫金山天文台
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