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Chromospheric activity on the late-type star V1355 Ori using Lijiang 1.8-m and 2.4-m telescopes
Pi, Qing-Feng1,2,3; Zhang, Li-Yun1,2; Chang L(常亮)2,4; Han, Xian-Ming1,5; Lu, Hong-Peng1,2; Zhang XL(张西亮)2,4; Wang, Dai-Mei1,2; Pi, QF
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2016-10-01
卷号16期号:10页码:153-U34
DOI10.1088/1674-4527/16/10/153
产权排序第4完成单位
收录类别SCI
关键词Stars: Chromosphere Stars: Activity Stars: Individual (V1355 Ori)
摘要We obtained new high-resolution spectra using the Lijiang 1.8-m and 2.4-m telescopes to investigate the chromospheric activities of V1355 Ori as indicated in the behaviors of Ca II H&K, H delta, H gamma, H beta, Na I D-1, D-2, H alpha and Ca II infrared triplet (IRT) lines. The observed spectra show obvious emissions above the continuum in Ca II H&K lines, absorptions in the H delta, H gamma, H beta and Na I D-1, D-2 lines, variable behavior (filled-in absorption, partial emission with a core absorption component or emission above the continuum) in the H alpha line, and weak self-reversal emissions in the strong filled-in absorptions of the Ca II IRT lines. We used a spectral subtraction technique to analyze our data. The results show no excess emission in the H delta and H gamma lines, very weak excess emissions in the Na I D-1, D-2 lines, excess emission in the H beta line, clear excess emission in the H alpha line, and excess emissions in the Ca II IRT lines. The value of the ratio of EW8542/EW8498 is in the range 0.9 to 1.7, which implies that chromospheric activity might have been caused by plage events. The value of the ratio E-H alpha/E-H beta is above 3, indicating that the Balmer lines would arise from prominence-like material. We also found time variations in light curves associated with equivalent widths of chromospheric activity lines in the Na I D-1, D-2, Ca II IRT and H alpha lines in particular. These phenomena can be explained by plage events, which are consistent with the behavior of chromospheric activity indicators.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000385996000004
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]RS-CANUM-VENATICORUM ; HD 291095=V1355 ORIONIS ; BRIGHT SOURCE CATALOG ; ALL-SKY SURVEY ; URSAE MAJORIS ; SYSTEMS ; PHOTOMETRY ; BINARIES ; SEARCH ; ALPHA
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9741
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Pi, QF
作者单位1.College of Physics/Department of Physics and Astronomy, Guizhou University, Guiyang 550025, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Mingde College, Guizhou University, Guiyang 550025, China
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
5.Dept. of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA
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Pi, Qing-Feng,Zhang, Li-Yun,Chang L,et al. Chromospheric activity on the late-type star V1355 Ori using Lijiang 1.8-m and 2.4-m telescopes[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(10):153-U34.
APA Pi, Qing-Feng.,Zhang, Li-Yun.,Chang L.,Han, Xian-Ming.,Lu, Hong-Peng.,...&Pi, QF.(2016).Chromospheric activity on the late-type star V1355 Ori using Lijiang 1.8-m and 2.4-m telescopes.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(10),153-U34.
MLA Pi, Qing-Feng,et al."Chromospheric activity on the late-type star V1355 Ori using Lijiang 1.8-m and 2.4-m telescopes".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.10(2016):153-U34.
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