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| TESS Observations of Seven Newly Identified High-amplitude δ Scuti Stars | |
Lv, Chenglong1,2 ; Esamdin, Ali1,2; Hasanzadeh, A.3,4; Ma, Shuguo5; Yang, Taozhi6; Karimov, Rivkat7
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| 2023-12-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL
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| ISSN | 0004-637X |
| Volume | 959Issue:1Pages:33 |
| Contribution Rank | 1 |
| Abstract | 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. |
| DOI | 10.3847/1538-4357/acf999 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | PERIOD-LUMINOSITY RELATION ; ASTEROSEISMIC ANALYSIS ; STELLAR PARAMETERS ; PETERSEN DIAGRAMS ; RR LYRAE ; ROTATION ; LIGHT ; CONSTRAINTS ; PULSATION ; VARIABLES |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001112588300001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5623 |
| Collection | 光学天文与技术应用研究室 |
| Corresponding Author | Esamdin, Ali |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Univ Warwick, Ctr Fus Space & Astrophys, Dept Phys, Coventry CV4 7AL, England 4.Univ Tehran, Inst Geophys, Tehran, Iran 5.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 6.Xi An Jiao Tong Univ, Sch Phys, Minist Educ, Key Lab Nonequilibrium Synth & Modulat Condensed M, Xian 710049, Peoples R China 7.Uzbek Acad Sci, Ulugh Beg Astron Inst, Tashkent 100052, Uzbekistan |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Lv-2023-TESS Observa（11959KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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