THE 1999aa-LIKE TYPE Ia SUPERNOVA IPTF14BDN IN THE ULTRAVIOLET AND OPTICAL
文献类型：期刊论文
| 作者 | Smitka, Michael T.1; Brown, Peter J.1; Suntzeff, Nicholas B.1; Zhang, Jujia2,3,4; Zhai, Qian2,3; Wang, Xiaofeng5,6; Mo, Jun5,6; Zhang, Tianmeng7
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2015-11-01 |
| 卷号 | 813期号:1 |
| 关键词 | line: formation line: identification supernovae: individual (iPTF14bdn, SN 1991T, SN 1999aa) ultraviolet: stars |
| 英文摘要 | We present ultraviolet (UV) and optical photometry and spectra of the 1999aa-like supernova (SN) iPTF14bdn. The UV data were observed using the Swift Ultraviolet/ Optical Telescope and constitute the first UV spectral series of a 1999aa-like SN. From the photometry, we measure Delta m(15)(B) = 0.84 +/- 0.05 mag and blue UV colors at epochs earlier than -5 days. The spectra show that the early-time blue colors are the result of less absorption between 2800-3200 angstrom than is present in normal SNe Ia. Using model spectra fits of the data at -10 and +10 days, we identify the origin of this spectral feature to be a temperature effect in which doubly ionized iron group elements create an opacity "window." We determine that the detection of high temperatures and large quantities of iron group elements at early epochs imply the mixing of a high Ni mass into the outer layers of the SN ejecta. We also identify the source of the I-band secondary maximum in iPTF14bdn to be the decay of Fe III to Fe II, as is seen in normal SNe Ia. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000365284100030 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5526]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, Dept Phys & Astron, College Stn, TX 77843 USA 2.Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650011, Peoples R China 3.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China 5.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 6.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China 7.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Smitka, Michael T.,Brown, Peter J.,Suntzeff, Nicholas B.,et al. THE 1999aa-LIKE TYPE Ia SUPERNOVA IPTF14BDN IN THE ULTRAVIOLET AND OPTICAL[J]. ASTROPHYSICAL JOURNAL,2015,813(1). |
| APA | Smitka, Michael T..,Brown, Peter J..,Suntzeff, Nicholas B..,Zhang, Jujia.,Zhai, Qian.,...&Zhang, Tianmeng.(2015).THE 1999aa-LIKE TYPE Ia SUPERNOVA IPTF14BDN IN THE ULTRAVIOLET AND OPTICAL.ASTROPHYSICAL JOURNAL,813(1). |
| MLA | Smitka, Michael T.,et al."THE 1999aa-LIKE TYPE Ia SUPERNOVA IPTF14BDN IN THE ULTRAVIOLET AND OPTICAL".ASTROPHYSICAL JOURNAL 813.1(2015). |
入库方式： OAI收割
来源：国家天文台
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