中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 分子云与恒星形成研究团组  > 期刊论文
题名: EXPANDING MOLECULAR BUBBLE SURROUNDING TYCO'S SUPERNOVA REMNANT (SN 1572) OBSERVED WITH THE IRAM 30 m TELESCOPE: EVIDENCE FOR A SINGLE-DEGENERATE PROGENITOR
作者: Zhou, Ping; Chen, Yang; Zhang, Zhi-Yu; Li, Xiang-Dong; Safi-Harb, Samar; Zhou, Xin; Zhang, Xiao
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2016
卷号: 826, 期号:1, 页码:34
DOI: 10.3847/0004-637X/826/1/34
英文摘要: Whether the progenitors of SNe Ia are single-degenerate or double-degenerate white dwarf (WD) systems is a highly debated topic. To address the origin of Tycho's Type Ia supernova remnant (SNR), SN 1572, we have carried out a (CO)-C-12 J = 2-1 mapping and a 3 mm line survey toward the remnant using the IRAM 30 m telescope. We show that Tycho is surrounded by a clumpy molecular bubble at a local standard of rest velocity of similar to 61 km s(-1), which expands at a speed of similar to 4.5 km s(-1) and has a mass of similar to 220 M-circle dot (at the distance of 2.5 kpc). Enhanced (CO)-C-12 J = 2-1 line emission relative to (CO)-C-12 J = 1-0 emission and possible line broadenings (in velocity range -64 to -60 km s(-1)) are found at the northeastern boundary of the SNR, where the shell is deformed and decelerated. These features, combined with the morphological correspondence between the expanding molecular bubble and Tycho, suggest that the SNR is associated with the bubble at the velocity range -66 to -57 km s(-1). The most plausible origin for the expanding bubble is the fast outflow (with velocity of hundreds km s(-1)) driven from the vicinity of a WD as it accreted matter from a nondegenerate companion star. The SNR has been expanding in the low-density wind-blown bubble, and the shock wave has just reached the molecular cavity wall. This is the first unambiguous detection of an expanding bubble driven by the progenitor of a Type Ia SNR, which constitutes evidence for a single-degenerate progenitor for this SN Ia.
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16817
Appears in Collections:分子云与恒星形成研究团组_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
2016116.pdf(903KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhou, Ping]'s Articles
[Chen, Yang]'s Articles
[Zhang, Zhi-Yu]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhou, Ping]‘s Articles
[Chen, Yang]‘s Articles
[Zhang, Zhi-Yu]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 2016116.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院紫金山天文台 - Feedback
Powered by CSpace