TESS Observations of Seven Newly Identified High-amplitude δ Scuti Stars
文献类型：期刊论文
| 作者 | Lv, Chenglong2,3 ; Esamdin, Ali2,3; Hasanzadeh, A.1,7; Ma, Shuguo6; Yang, Taozhi5; Karimov, Rivkat4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2023-12-01 |
| 卷号 | 959期号:1页码:33 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/acf999 |
| 产权排序 | 1 |
| 英文摘要 | We report seven newly identified high-amplitude delta Scuti (HADS) stars. Among them, two stars (TIC 30977864 and TIC 387379145) exhibit pure radial pulsation without the excitation of non-radial modes. TIC 30977864 is classified as a double-mode HADS star, while the other four stars potentially show triple-mode HADS behavior. TIC 112682462 and TIC 255603395 closely resemble RR Lyrae stars based on their light curves, position in the period-luminosity diagram, and the period ratio diagram. However, without spectral observations, it is challenging to ascertain whether these two stars are HADS or RR Lyrae stars. TIC 281695001 exhibits a fundamental frequency amplitude smaller than that of the first overtone, suggesting the presence of intriguing phenomena that necessitate further analysis. We analyzed the relationship between metallicity and period using data provided by Netzel & Smolec. The metallicities of the 176 stars display a broad distribution ranging from -2.0 dex to 0.5 dex, with periods spanning 0.05 to 0.20 days. This random distribution of metallicities may contribute to the dispersion observed in the P1/P0 ratio. To derive more accurate conclusions, future spectroscopic observations of a larger sample of HADS stars are crucial. These observations will provide precise rotational velocities and more accurate determinations of metallicities. |
| WOS关键词 | PERIOD-LUMINOSITY RELATION ; ASTEROSEISMIC ANALYSIS ; STELLAR PARAMETERS ; PETERSEN DIAGRAMS ; RR LYRAE ; ROTATION ; LIGHT ; CONSTRAINTS ; PULSATION ; VARIABLES |
| 资助项目 | MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2022YFE0126200] ; National Key R&D program of China for the Intergovernmental Scientific and Technological Innovation Cooperation Project[202204910463] ; China Scholarship Council scholarship[ST/X000915/1] ; Science and Technology Facilities Council (STFC) ; Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) ; National Development and Reform Commission ; Chinese Academy of Sciences |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001112588300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166 ; National Key R&D program of China for the Intergovernmental Scientific and Technological Innovation Cooperation Project ; China Scholarship Council scholarship ; Science and Technology Facilities Council (STFC) ; Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) ; National Development and Reform Commission ; Chinese Academy of Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5622]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 通讯作者 | Esamdin, Ali |
| 作者单位 | 1.Univ Warwick, Ctr Fus Space & Astrophys, Dept Phys, Coventry CV4 7AL, England 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 4.Uzbek Acad Sci, Ulugh Beg Astron Inst, Tashkent 100052, Uzbekistan 5.Xi An Jiao Tong Univ, Sch Phys, Minist Educ, Key Lab Nonequilibrium Synth & Modulat Condensed M, Xian 710049, Peoples R China 6.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 7.Univ Tehran, Inst Geophys, Tehran, Iran |
| 推荐引用方式 GB/T 7714 | Lv, Chenglong,Esamdin, Ali,Hasanzadeh, A.,et al. TESS Observations of Seven Newly Identified High-amplitude δ Scuti Stars[J]. ASTROPHYSICAL JOURNAL,2023,959(1):33. |
| APA | Lv, Chenglong,Esamdin, Ali,Hasanzadeh, A.,Ma, Shuguo,Yang, Taozhi,&Karimov, Rivkat.(2023).TESS Observations of Seven Newly Identified High-amplitude δ Scuti Stars.ASTROPHYSICAL JOURNAL,959(1),33. |
| MLA | Lv, Chenglong,et al."TESS Observations of Seven Newly Identified High-amplitude δ Scuti Stars".ASTROPHYSICAL JOURNAL 959.1(2023):33. |
入库方式： OAI收割
来源：新疆天文台
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