X射线瞬变体EP240309a（EP J115415.8-501810）的光学光谱和光度分类--中间极性

Q1 Earth and Planetary Sciences

Monthly Notices of the Royal Astronomical Society: Letters Pub Date : 2024-05-03 DOI:10.1093/mnrasl/slae038

Stephen. B. Potter, D. A. H. Buckley, S. Scaringi, I. Monageng, O. D. Egbo, P. Charles, N. Erasmus, Carel van Gend, Egan Loubser, Keegan Titus, K. Rosie, H. Gajjar, H. Worters, Sunil Chandra, R. P. M. Julie, Moloko Hlakola

{"title":"X射线瞬变体EP240309a（EP J115415.8-501810）的光学光谱和光度分类--中间极性","authors":"Stephen. B. Potter, D. A. H. Buckley, S. Scaringi, I. Monageng, O. D. Egbo, P. Charles, N. Erasmus, Carel van Gend, Egan Loubser, Keegan Titus, K. Rosie, H. Gajjar, H. Worters, Sunil Chandra, R. P. M. Julie, Moloko Hlakola","doi":"10.1093/mnrasl/slae038","DOIUrl":null,"url":null,"abstract":"\n We report on optical follow-up observations of an X-ray source initially detected by the Einstein Probe mission. Our investigations categorize the source as an intermediate polar, a class of magnetic cataclysmic variables, exhibiting an orbital period of 3.7614(4) hours and a white dwarf spin period of 3.97 minutes. The orbital period was identified through TESS observations, while our high-speed photometric data, obtained using the 1.9m and Lesedi 1.0m telescopes at the South African Astronomical Observatory, revealed both the spin and beat periods. Additionally, we present orbitally phase-resolved spectroscopic observations using the 1.9m telescope, specifically centered on the Hβ emission line, which reveal two emission components that exhibit Doppler variations throughout the orbital cycle.","PeriodicalId":18951,"journal":{"name":"Monthly Notices of the Royal Astronomical Society: Letters","volume":"118 S8","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optical spectroscopic and photometric classification of the X-ray transient EP240309a (EP J115415.8-501810) as an intermediate polar\",\"authors\":\"Stephen. B. Potter, D. A. H. Buckley, S. Scaringi, I. Monageng, O. D. Egbo, P. Charles, N. Erasmus, Carel van Gend, Egan Loubser, Keegan Titus, K. Rosie, H. Gajjar, H. Worters, Sunil Chandra, R. P. M. Julie, Moloko Hlakola\",\"doi\":\"10.1093/mnrasl/slae038\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n We report on optical follow-up observations of an X-ray source initially detected by the Einstein Probe mission. Our investigations categorize the source as an intermediate polar, a class of magnetic cataclysmic variables, exhibiting an orbital period of 3.7614(4) hours and a white dwarf spin period of 3.97 minutes. The orbital period was identified through TESS observations, while our high-speed photometric data, obtained using the 1.9m and Lesedi 1.0m telescopes at the South African Astronomical Observatory, revealed both the spin and beat periods. Additionally, we present orbitally phase-resolved spectroscopic observations using the 1.9m telescope, specifically centered on the Hβ emission line, which reveal two emission components that exhibit Doppler variations throughout the orbital cycle.\",\"PeriodicalId\":18951,\"journal\":{\"name\":\"Monthly Notices of the Royal Astronomical Society: Letters\",\"volume\":\"118 S8\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-05-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Monthly Notices of the Royal Astronomical Society: Letters\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1093/mnrasl/slae038\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Earth and Planetary Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Monthly Notices of the Royal Astronomical Society: Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/mnrasl/slae038","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}

引用次数: 0

摘要

我们报告了对爱因斯坦探测器最初探测到的一个X射线源的光学跟踪观测结果。我们的研究将该源归类为中间极，这是一类磁暴变星，其轨道周期为 3.7614(4)小时，白矮星自旋周期为 3.97 分钟。轨道周期是通过 TESS 观测确定的，而我们使用南非天文台的 1.9m 和 Lesedi 1.0m 望远镜获得的高速测光数据则揭示了自旋周期和跳动周期。此外，我们还利用 1.9 米望远镜进行了轨道相位分辨光谱观测，特别是以 Hβ 发射线为中心的观测，揭示了在整个轨道周期中表现出多普勒变化的两个发射成分。

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

Optical spectroscopic and photometric classification of the X-ray transient EP240309a (EP J115415.8-501810) as an intermediate polar

We report on optical follow-up observations of an X-ray source initially detected by the Einstein Probe mission. Our investigations categorize the source as an intermediate polar, a class of magnetic cataclysmic variables, exhibiting an orbital period of 3.7614(4) hours and a white dwarf spin period of 3.97 minutes. The orbital period was identified through TESS observations, while our high-speed photometric data, obtained using the 1.9m and Lesedi 1.0m telescopes at the South African Astronomical Observatory, revealed both the spin and beat periods. Additionally, we present orbitally phase-resolved spectroscopic observations using the 1.9m telescope, specifically centered on the Hβ emission line, which reveal two emission components that exhibit Doppler variations throughout the orbital cycle.

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

Monthly Notices of the Royal Astronomical Society: Letters Earth and Planetary Sciences-Space and Planetary Science

CiteScore

8.80

自引率

0.00%

发文量

136

期刊介绍： For papers that merit urgent publication, MNRAS Letters, the online section of Monthly Notices of the Royal Astronomical Society, publishes short, topical and significant research in all fields of astronomy. Letters should be self-contained and describe the results of an original study whose rapid publication might be expected to have a significant influence on the subsequent development of research in the associated subject area. The 5-page limit must be respected. Authors are required to state their reasons for seeking publication in the form of a Letter when submitting their manuscript.