NAOC Open IR  > 光学天文研究部
High-resolution spectroscopy and spectropolarimetry of selected delta Sct pulsating variables
Joshi, Santosh1; Semenko, Eugene2; Moiseeva, A.2; Sharma, Kaushal3; Joshi, Y. C.1; Sachkov, M.4,5; Singh, Harinder P.3; Yerra, Bharat Kumar6
2017-05-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume467Issue:1Pages:633-645
AbstractThe combination of photometry, spectroscopy and spectropolarimetry of the chemically peculiar stars often aims to study the complex physical phenomena such as stellar pulsation, chemical inhomogeneity, magnetic field and their interplay with stellar atmosphere and circumstellar environment. The prime objective of this study is to determine the atmospheric parameters of a set of Am stars to understand their evolutionary status. Atmospheric abundances and basic parameters are determined using full spectrum fitting technique by comparing the high-resolution spectra to the synthetic spectra. To know the evolutionary status, we derive the effective temperature and luminosity from different methods and compare them with the literature. The location of these stars in the Hertzsprung-Russell diagram demonstrates that all the sample stars are evolved from the zero-age main sequence towards terminal-age main sequence and occupy the region of delta Sct instability strip. The abundance analysis shows that the light elements e.g. Ca and Sc are underabundant while iron peak elements such as Ba, Ce, etc. are overabundant and these chemical properties are typical for Am stars. The results obtained from the spectropolarimetric analysis of our studied stars show that the longitudinal magnetic field is negligible in all of them, which further support to their Am class of peculiarity.
SubtypeArticle
KeywordStars: Abundances Stars: Chemically Peculiar Stars: Fundamental Parameters
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationIndo-Russian(INT/RFBR/P-118) ; Indo-Russian(INT/RFBR/P-118) ; RFBR(12-02-92693-IND_a) ; RFBR(12-02-92693-IND_a) ; DST, India ; DST, India ; RAS, Russia ; RAS, Russia ; Russian Science Foundation(14-50-00043) ; Russian Science Foundation(14-50-00043) ; DST-INSPIRE faculty award ; DST-INSPIRE faculty award ; CAS ; CAS ; NSFC ; NSFC ; DPAC ; DPAC ; Indo-Russian(INT/RFBR/P-118) ; Indo-Russian(INT/RFBR/P-118) ; RFBR(12-02-92693-IND_a) ; RFBR(12-02-92693-IND_a) ; DST, India ; DST, India ; RAS, Russia ; RAS, Russia ; Russian Science Foundation(14-50-00043) ; Russian Science Foundation(14-50-00043) ; DST-INSPIRE faculty award ; DST-INSPIRE faculty award ; CAS ; CAS ; NSFC ; NSFC ; DPAC ; DPAC
DOI10.1093/mnras/stx087
WOS KeywordA-TYPE STARS ; CHEMICALLY PECULIAR STARS ; UPPER MAIN-SEQUENCE ; MAGNETIC-FIELDS ; EFFECTIVE TEMPERATURE ; FUNDAMENTAL PARAMETERS ; BOLOMETRIC CORRECTIONS ; SOLAR NEIGHBORHOOD ; BETA PHOTOMETRY ; SURFACE GRAVITY
Indexed BySCI
Language英语
Funding OrganizationIndo-Russian(INT/RFBR/P-118) ; Indo-Russian(INT/RFBR/P-118) ; RFBR(12-02-92693-IND_a) ; RFBR(12-02-92693-IND_a) ; DST, India ; DST, India ; RAS, Russia ; RAS, Russia ; Russian Science Foundation(14-50-00043) ; Russian Science Foundation(14-50-00043) ; DST-INSPIRE faculty award ; DST-INSPIRE faculty award ; CAS ; CAS ; NSFC ; NSFC ; DPAC ; DPAC ; Indo-Russian(INT/RFBR/P-118) ; Indo-Russian(INT/RFBR/P-118) ; RFBR(12-02-92693-IND_a) ; RFBR(12-02-92693-IND_a) ; DST, India ; DST, India ; RAS, Russia ; RAS, Russia ; Russian Science Foundation(14-50-00043) ; Russian Science Foundation(14-50-00043) ; DST-INSPIRE faculty award ; DST-INSPIRE faculty award ; CAS ; CAS ; NSFC ; NSFC ; DPAC ; DPAC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000398418900041
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8218
Collection光学天文研究部
Affiliation1.Aryabhatta Res Inst Observat Sci, Manora Peak 263002, Nainital, India
2.Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Karachai Cherke, Russia
3.Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India
4.Russian Acad Sci, Inst Astron, Moscow 119017, Russia
5.RUDN Univ, Inst Appl Tech & Econ Res & Expert Assessment, Moscow 117198, Russia
6.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Joshi, Santosh,Semenko, Eugene,Moiseeva, A.,et al. High-resolution spectroscopy and spectropolarimetry of selected delta Sct pulsating variables[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,467(1):633-645.
APA Joshi, Santosh.,Semenko, Eugene.,Moiseeva, A..,Sharma, Kaushal.,Joshi, Y. C..,...&Yerra, Bharat Kumar.(2017).High-resolution spectroscopy and spectropolarimetry of selected delta Sct pulsating variables.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,467(1),633-645.
MLA Joshi, Santosh,et al."High-resolution spectroscopy and spectropolarimetry of selected delta Sct pulsating variables".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 467.1(2017):633-645.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Joshi, Santosh]'s Articles
[Semenko, Eugene]'s Articles
[Moiseeva, A.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Joshi, Santosh]'s Articles
[Semenko, Eugene]'s Articles
[Moiseeva, A.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Joshi, Santosh]'s Articles
[Semenko, Eugene]'s Articles
[Moiseeva, A.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.