A TALE OF THREE GALAXIES: ANOMALOUS DUST PROPERTIES IN IRAS F10398+1455, IRAS F21013-0739, AND SDSS J0808+3948
文献类型：期刊论文
| 作者 | Xie, Yanxia1,2; Hao, Lei1 ; Li, Aigen2
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2014-10-20 |
| 卷号 | 794期号:2页码:19-23 |
| 关键词 | dust galaxies: active galaxies: individual (IRAS F10398+1455 infrared: galaxies extinction IRAS F21013-0739 SDSS J0808+3948) |
| 通讯作者 | 郝蕾 |
| 英文摘要 | On a galactic scale, the 9.7 mu m silicate emission is usually only seen in type 1 active galactic nuclei (AGNs). They usually also display a flat emission continuum at similar to 5-8 mu m and the absence of polycyclic aromatic hydrocarbon (PAH) emission bands. In contrast, starburst galaxies, luminous infrared (IR) galaxies, and ultraluminous IR galaxies exhibit a red 5-8 mu m emission continuum, strong 9.7 mu m and 18 mu m silicate absorption features, and strong PAH emission bands. Here, we report the detection of anomalous dust properties by the Spitzer/Infrared Spectrograph in three galaxies (IRAS F10398+1455, IRAS F21013-0739, and SDSS J0808+3948) which are characterized by the simultaneous detection of a red 5-8 mu m emission continuum, the 9.7 and 18 mu m silicate emission features, as well as strong PAH emission bands. These apparently contradictory dust IR emission properties are discussed in terms of iron-poor silicate composition, carbon dust deficit, small grain size, and low dust temperature in the young AGN phase of these three galaxies. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; ULTRALUMINOUS INFRARED GALAXIES ; DIFFUSE INTERSTELLAR-MEDIUM ; SPITZER-SPACE-TELESCOPE ; MU-M SAMPLE ; CRYSTALLINE SILICATES ; OPTICAL-PROPERTIES ; FORMING GALAXIES ; HIGH-REDSHIFT ; EMISSION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343399200001 |
| 公开日期 | 2015-02-14 |
| 源URL | [http://119.78.226.72//handle/331011/15744]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA |
| 推荐引用方式 GB/T 7714 | Xie, Yanxia,Hao, Lei,Li, Aigen. A TALE OF THREE GALAXIES: ANOMALOUS DUST PROPERTIES IN IRAS F10398+1455, IRAS F21013-0739, AND SDSS J0808+3948[J]. ASTROPHYSICAL JOURNAL LETTERS,2014,794(2):19-23. |
| APA | Xie, Yanxia,Hao, Lei,&Li, Aigen.(2014).A TALE OF THREE GALAXIES: ANOMALOUS DUST PROPERTIES IN IRAS F10398+1455, IRAS F21013-0739, AND SDSS J0808+3948.ASTROPHYSICAL JOURNAL LETTERS,794(2),19-23. |
| MLA | Xie, Yanxia,et al."A TALE OF THREE GALAXIES: ANOMALOUS DUST PROPERTIES IN IRAS F10398+1455, IRAS F21013-0739, AND SDSS J0808+3948".ASTROPHYSICAL JOURNAL LETTERS 794.2(2014):19-23. |
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来源：上海天文台
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