Michael L. Sitko, Ray W. Russell, Monica Pikhartova, William Danchi
{"title":"2024 年赫比格 Ae 星 HD 163296 中的气体动力学","authors":"Michael L. Sitko, Ray W. Russell, Monica Pikhartova, William Danchi","doi":"10.3847/2515-5172/ad7381","DOIUrl":null,"url":null,"abstract":"We observed the Herbig Ae star HD 163296 over 9 nights in 2024. On 4 of the nights, the He <sc>i</sc> line at 1.083 <italic toggle=\"yes\">μ</italic>m exhibited a profile rarely seen in the star. Rather than the typical P Cygni profile indicating a net gas outflow, the profile consisted of a deep absorption line with weak emission peaks on either side. These seem to be consistent with either an outflowing bipolar jet, a circular ring of gas orbiting close to the star, and/or accretion columns connecting the inner disk to the star. Given the history of the ejection of Herbi-Haro object in the star’s bipolar jets, these observations should coincide with the very beginning of the ejection event. Coordinated observations with multiple observing techniques over the next decade are warranted.","PeriodicalId":74684,"journal":{"name":"Research notes of the AAS","volume":"4 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Gas Dynamics in the Herbig Ae Star HD 163296 in 2024\",\"authors\":\"Michael L. Sitko, Ray W. Russell, Monica Pikhartova, William Danchi\",\"doi\":\"10.3847/2515-5172/ad7381\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We observed the Herbig Ae star HD 163296 over 9 nights in 2024. On 4 of the nights, the He <sc>i</sc> line at 1.083 <italic toggle=\\\"yes\\\">μ</italic>m exhibited a profile rarely seen in the star. Rather than the typical P Cygni profile indicating a net gas outflow, the profile consisted of a deep absorption line with weak emission peaks on either side. These seem to be consistent with either an outflowing bipolar jet, a circular ring of gas orbiting close to the star, and/or accretion columns connecting the inner disk to the star. Given the history of the ejection of Herbi-Haro object in the star’s bipolar jets, these observations should coincide with the very beginning of the ejection event. Coordinated observations with multiple observing techniques over the next decade are warranted.\",\"PeriodicalId\":74684,\"journal\":{\"name\":\"Research notes of the AAS\",\"volume\":\"4 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Research notes of the AAS\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3847/2515-5172/ad7381\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research notes of the AAS","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/2515-5172/ad7381","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
我们在 2024 年的 9 个夜晚观测了赫比格 Ae 星 HD 163296。在其中的 4 个夜晚，1.083 μm 波长处的 He i 线呈现出该恒星罕见的轮廓。它不是像典型的 P Cygni 那样显示净气体外流，而是由一条深吸收线和两侧微弱的发射峰组成。这似乎与流出的双极射流、靠近恒星运行的环形气体环和/或连接内盘与恒星的吸积柱相吻合。鉴于赫比-哈罗天体在恒星双极射流中的喷射历史，这些观测结果应该与喷射事件的起始时间相吻合。在未来十年里，有必要使用多种观测技术进行协调观测。
Gas Dynamics in the Herbig Ae Star HD 163296 in 2024
We observed the Herbig Ae star HD 163296 over 9 nights in 2024. On 4 of the nights, the He i line at 1.083 μm exhibited a profile rarely seen in the star. Rather than the typical P Cygni profile indicating a net gas outflow, the profile consisted of a deep absorption line with weak emission peaks on either side. These seem to be consistent with either an outflowing bipolar jet, a circular ring of gas orbiting close to the star, and/or accretion columns connecting the inner disk to the star. Given the history of the ejection of Herbi-Haro object in the star’s bipolar jets, these observations should coincide with the very beginning of the ejection event. Coordinated observations with multiple observing techniques over the next decade are warranted.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
