A. Yushchenko, Chulhee Kim, Yeuncheol Jeong, D. Doikov, V. Yushchenko, S. V. Khrapatyi, A. Demessinova
{"title":"The Chemical Composition of V1719 Cyg: δ Scuti Type Star without the Accretion of\n Interstellar Matter","authors":"A. Yushchenko, Chulhee Kim, Yeuncheol Jeong, D. Doikov, V. Yushchenko, S. V. Khrapatyi, A. Demessinova","doi":"10.5140/JASS.2020.37.3.157","DOIUrl":null,"url":null,"abstract":"High resolution spectroscopic observation of V1719 Cyg were made at 1.8 meter\n telescope of Bohyunsan Optical Astronomy observatory in Korea. Spectral resolving power\n was R=45,000, signal to noise ratio S/N>100. The abundances of 28 chemical elements\n from carbon to dysprosium were found with the spectrum synthesis method. The abundances\n of oxygen, titanium, vanadium and elements with Z>30 are overabundant by 0.2–0.9 dex\n with respect to the solar values. Correlations of derived abundances with condensation\n temperatures and second ionization potentials of these elements are discussed. The\n possible influence of accretion from interstellar environment is not so strong as for ρ\n Pup and other stars with similar temperatures. The signs of accretion are absent. The\n comparison of chemical composition with solar system r- & s-process abundance\n patterns shows the enhancement of the photosphere by s-process elements.","PeriodicalId":44366,"journal":{"name":"Journal of Astronomy and Space Sciences","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Astronomy and Space Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5140/JASS.2020.37.3.157","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
High resolution spectroscopic observation of V1719 Cyg were made at 1.8 meter
telescope of Bohyunsan Optical Astronomy observatory in Korea. Spectral resolving power
was R=45,000, signal to noise ratio S/N>100. The abundances of 28 chemical elements
from carbon to dysprosium were found with the spectrum synthesis method. The abundances
of oxygen, titanium, vanadium and elements with Z>30 are overabundant by 0.2–0.9 dex
with respect to the solar values. Correlations of derived abundances with condensation
temperatures and second ionization potentials of these elements are discussed. The
possible influence of accretion from interstellar environment is not so strong as for ρ
Pup and other stars with similar temperatures. The signs of accretion are absent. The
comparison of chemical composition with solar system r- & s-process abundance
patterns shows the enhancement of the photosphere by s-process elements.
期刊介绍：
JASS aims for the promotion of global awareness and understanding of space science and related applications. Unlike other journals that focus either on space science or on space technologies, it intends to bridge the two communities of space science and technologies, by providing opportunities to exchange ideas and viewpoints in a single journal. Topics suitable for publication in JASS include researches in the following fields: space astronomy, solar physics, magnetospheric and ionospheric physics, cosmic ray, space weather, and planetary sciences; space instrumentation, satellite dynamics, geodesy, spacecraft control, and spacecraft navigation. However, the topics covered by JASS are not restricted to those mentioned above as the journal also encourages submission of research results in all other branches related to space science and technologies. Even though JASS was established on the heritage and achievements of the Korean space science community, it is now open to the worldwide community, while maintaining a high standard as a leading international journal. Hence, it solicits papers from the international community with a vision of global collaboration in the fields of space science and technologies.
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