Extraordinary Late-Time Infrared Emission of Type IIn Supernovae.pdfVIP

下载本文档

2
0
约5.13万字
约 14页
2017-04-13 发布于江苏
举报
版权申诉

Extraordinary Late-Time Infrared Emission of Type IIn Supernovae.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Extraordinary Late-Time Infrared Emission of Type IIn Supernovae

a r X i v : a s t r o - p h / 0 2 0 4 4 7 7 v 1 2 7 A p r 2 0 0 2 Draft version February 1, 2008 Preprint typeset using LATEX style emulateapj v. 14/09/00 EXTRAORDINARY LATE-TIME INFRARED EMISSION OF TYPE IIN SUPERNOVAE 1 Christopher L. Gerardy,2 Robert A. Fesen,2 Ken’ichi Nomoto,3 Peter M. Garnavich,4 Saurabh Jha,5 Peter M. Challis,5 Robert P. Kirshner,5 Peter Ho?flich,6 and J. Craig Wheeler6 Draft version February 1, 2008 ABSTRACT Near-Infrared (NIR) observations are presented for five Type IIn supernovae (SN 1995N, SN 1997ab, SN 1998S, SN 1999Z, and SN 1999el) that exhibit strong infrared excesses at late times (t 100 d). H - and K -band emission from these objects is dominated by a continuum that rises toward longer wavelengths. The data are interpreted as thermal emission from dust, probably situated in a pre-existing circumstellar nebula. The IR luminosities implied by single temperature blackbody fits are quite large, 1041?42 erg s?1, and the emission evolves slowly, lasting for years after maximum light. For SN 1995N, the integrated energy release via IR dust emission was ≈ 0.5 – 1 × 1050 erg. A number of dust heating scenarios are considered, the most likely being an infrared echo powered by X-ray and UV emissions from the shock interaction with a dense circumstellar medium. Subject headings: supernovae: individual (SN 1995N, SN 1997ab, SN 1998S, SN 1999Z, SN 1999el) — dust — circumstellar matter — infrared: stars 1. introduction 1.1. Background On 3 January 1980, Merrill (1980) detected infrared emission from SN 1979C that was stronger toward longer wavelengths. Since then similar “infrared excesses” have been observed in a number of other supernovae including SN 1980K (Telesco et al. 1981), SN 1982E (Graham et al. 1983; Graham Meikle 1986), SN 1982L, SN 1982R (Graham Meikle 1986), SN 1985L (Elias et al. 1986), SN 1993J (Lewis et al. 1994), SN 1994Y (Garnavich, Noriega-Crespo Moro-Martin 1996), SN 1998S (Gerardy et al. 2000; Fassia et al. 2000) a