失控O星周围的HII区域和弓形激波

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Revista Mexicana de Astronomia y Astrofisica Pub Date : 2022-10-01 DOI:10.22201/ia.01851101p.2022.58.02.18

A. Raga, J. Cantó, A. Noriega-Crespo

{"title":"失控O星周围的HII区域和弓形激波","authors":"A. Raga, J. Cantó, A. Noriega-Crespo","doi":"10.22201/ia.01851101p.2022.58.02.18","DOIUrl":null,"url":null,"abstract":"We present a model for the HII region and stellar wind bow shock formed by runaway O stars passing through the Galactic disk. We develop a quasi-analytic approach in which the absorption of stellar ionizing photons by the bow shock is considered. With these models we study the transition between a detached ionization front (leading the bow shock) and an ionization front trapped by the stellar wind bow shock. We find that for an O7 star one needs to have a stellar velocity of only a few km/s and an environmental density > 105 cm−3.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":" ","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"THE HII REGIONS AND BOW SHOCKS AROUND RUNAWAY O STARS\",\"authors\":\"A. Raga, J. Cantó, A. Noriega-Crespo\",\"doi\":\"10.22201/ia.01851101p.2022.58.02.18\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present a model for the HII region and stellar wind bow shock formed by runaway O stars passing through the Galactic disk. We develop a quasi-analytic approach in which the absorption of stellar ionizing photons by the bow shock is considered. With these models we study the transition between a detached ionization front (leading the bow shock) and an ionization front trapped by the stellar wind bow shock. We find that for an O7 star one needs to have a stellar velocity of only a few km/s and an environmental density > 105 cm−3.\",\"PeriodicalId\":49602,\"journal\":{\"name\":\"Revista Mexicana de Astronomia y Astrofisica\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2022-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Revista Mexicana de Astronomia y Astrofisica\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.22201/ia.01851101p.2022.58.02.18\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista Mexicana de Astronomia y Astrofisica","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.22201/ia.01851101p.2022.58.02.18","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

摘要

我们提出了一个HII区域和由逃逸的O型恒星穿过银盘形成的恒星风弓激波的模型。我们发展了一种准解析方法，其中考虑了弓形激波对恒星电离光子的吸收。利用这些模型，我们研究了分离的电离锋(导致弓形激波)和被恒星风弓形激波捕获的电离锋之间的过渡。我们发现，对于一颗O7恒星来说，恒星速度只需几公里/秒，环境密度为105cm - 3。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

THE HII REGIONS AND BOW SHOCKS AROUND RUNAWAY O STARS

We present a model for the HII region and stellar wind bow shock formed by runaway O stars passing through the Galactic disk. We develop a quasi-analytic approach in which the absorption of stellar ionizing photons by the bow shock is considered. With these models we study the transition between a detached ionization front (leading the bow shock) and an ionization front trapped by the stellar wind bow shock. We find that for an O7 star one needs to have a stellar velocity of only a few km/s and an environmental density > 105 cm−3.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Revista Mexicana de Astronomia y Astrofisica 地学天文-天文与天体物理

CiteScore

1.30

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Revista Mexicana de Astronomía y Astrofísica, founded in 1974, publishes original research papers in all branches of astronomy, astrophysics and closely related fields. Two numbers per year are issued and are distributed free of charge to all institutions engaged in the fields covered by the RMxAA.