| First Chromospheric Activity and Doppler Imaging Study of PW And Using a New Doppler Imaging Code: SpotDIPy | |
Bahar, Engin1; Şenavcı, Hakan V.1; Işık, Emre2,3; Hussain, Gaitee A. J.4; Kochukhov, Oleg5; Montes, David6; Xiang Y(项越)7,8
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2024 | |
| 卷号 | 960期号:1 |
| DOI | 10.3847/1538-4357/ad055d |
| 产权排序 | 第7完成单位 |
| 收录类别 | SCI |
| 摘要 | Measuring the coverage of dark spots on cool stars is important to understanding how stellar magnetic activity scales with the rotation rate and convection zone depth. In this respect, it is crucial to infer surface magnetic patterns on G and K stars, to reveal solar-like stellar dynamos in action. Molecular bands serve as invaluable indicators of cool spots on the surfaces of stars, as they play a crucial role in enabling accurate assessments of the extent of spot coverage across the stellar surface. Therefore, more reliable surface images can be obtained considering the inversion of atomic lines with molecular bands. In this context, we simultaneously carry out Doppler imaging (DI) using atomic lines as well as titanium oxide band profiles of PW And (K2 V) and also investigate chromospheric activity indicators for the first time in the literature, using high-resolution spectra. The surface spot distribution obtained from the inversion process represents both atomic line and TiO-band profiles quite accurately. The chromospheric emission is also correlated with photospheric spot coverage, except during a possible flare event during the observations. We detect frequent flare activity, using TESS photometry. We also introduce a new open-source, Python-based DI code SpotDIPy that allows performing surface reconstructions of single stars using the maximum entropy method. We test the code by comparing surface reconstruction simulations with the extensively used DoTS code. We show that the surface brightness distribution maps reconstructed via both codes using the same simulated data are consistent with each other. |
| 资助项目 | Scientific And Technological Research Council of Turkiye (TUBIdot;TAK)[1001-115F033]; Agencia Estatal de Investigacion of the Spanish Ministerio de Ciencia e Innovacion; Swedish Research Council[2019-03548] |
| 项目资助者 | Scientific And Technological Research Council of Turkiye (TUBIdot ; TAK)[1001-115F033] ; Agencia Estatal de Investigacion of the Spanish Ministerio de Ciencia e Innovacion[PID2019-109522GB-C5[1:4]] ; Swedish Research Council[2019-03548] |
| 语种 | 英语 |
| 学科领域 | 天文学 |
| 文章类型 | Article |
| 出版者 | IOP Publishing Ltd |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:001128967000001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | RADIAL-VELOCITIES ; YOUNG ; STARS ; ASTROPY ; DISTRIBUTIONS ; SPECTROSCOPY ; ALGORITHM ; PACKAGE ; PROJECT ; MEMBERS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/26455 |
| 专题 | 系外行星研究组 中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Department of Astronomy and Space Sciences, Faculty of Science, Ankara University, Beşevler 06100, Ankara, Türkiye; [email protected]; 2.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany; 3.Department of Computer Science, Turkish-German University, Beykoz 34820, Istanbul, Türkiye; 4.European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands; 5.Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden; 6.Departamento de Física de la Tierra y Astrofísica & IPARCOS-UCM (Instituto de Física de Partículas y del Cosmos de la UCM), Facultad de Ciencias Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain; 7.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 8.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Bahar, Engin,Şenavcı, Hakan V.,Işık, Emre,et al. First Chromospheric Activity and Doppler Imaging Study of PW And Using a New Doppler Imaging Code: SpotDIPy[J]. ASTROPHYSICAL JOURNAL,2024,960(1). |
| APA | Bahar, Engin.,Şenavcı, Hakan V..,Işık, Emre.,Hussain, Gaitee A. J..,Kochukhov, Oleg.,...&项越.(2024).First Chromospheric Activity and Doppler Imaging Study of PW And Using a New Doppler Imaging Code: SpotDIPy.ASTROPHYSICAL JOURNAL,960(1). |
| MLA | Bahar, Engin,et al."First Chromospheric Activity and Doppler Imaging Study of PW And Using a New Doppler Imaging Code: SpotDIPy".ASTROPHYSICAL JOURNAL 960.1(2024). |
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| First Chromospheric （2998KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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