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1968년 ~ 2023년까지 1,187 건의 한국천문학회지를 격월간 확인하실 수 있습니다.
- The Korean Astronomical Society (The Korean Astronomical Society)
- 계간 (Quarterly)
- ISSN : 1225-4614 (ISSN : 1225-4614)
1225-4614
- DB구축현황 : 1,187건 (DB Construction : 1,187 Articles)
총 게시글 1,187건
페이지 81/119
801
- CHA SEUNG-HOON
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.253-254
- 1996
- 원문 바로보기
To understand the dynamical structures of stellar wind bubble, one and two-dimensional calculations has been performed. Using FCT Code with cooling effects and assuming constant mass loss rate and ambient medium density, we could divide stellar winds into the regime of slow and fast winds. The slow wind driven bubble shows initially radiative and becomes partially radiative bubble in which shocked stellar wind zone is still adiabatic. In contrast., the fast wind driven bubble shows initially fully adiabatic and becomes adiabatic bubbles with radiative outer shell. We also determine analytically the onset of thin-shell formation time in case of fast wind driven bubble with power-law energy injection and ambient density structure. We solve the line transfer problem with numerical results in order to calculate line profile of [OIII] forbidden line.
802
- YUAN Q. R.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.55-56
- 1996
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In order to investigate the spatial orientation of the spin vectors of galaxies in the Virgo cluster, we carried out a detailed identification of all the certain and possible member disk galaxies with four UK Schmidt Telescope (UKST) III a-j direct plates digitized by the Automated Plate Measuring System (APM). As a result, a relatively large and complete database with no selection effect of the member galaxies has been established. We provide the APM measured values of the position angle (P.A.) and diameters at the isophotal level of 24.5 <TEX>$m_j / arcsec^2$</TEX>. Based on this newly generated database, an initial study on the spatial orientation of the spin vectors of galaxies in the Virgo cluster is shown.
803
- KIM YONGGI
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.235-236
- 1996
- 원문 바로보기
Using a phenomenological model for the accretion onto the magnetic white dwarf, we calclliated some optical line profiles from the magnetosphere of such systems. Line profiles of these systems seem to be produced in the magnetosphere of the compact star due to the reemission of X-ray produced near the stellar surface. Some results of our new calculation and the analysis of these results will be presented. Our results show that the model used here can reproduce the observed optical line profiles and open the possiblity to determine the parameters of individual systems.
804
- CHEN ALFRED B.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.123-124
- 1996
- 원문 바로보기
Snapshots of eight SA and standard fields from low to high galactic latitudes were made using the KPNO 0.9m 2K <TEX>$\times$</TEX> 2K CCD with a limiting magnitude from 19 to 22.5. The purpose of this study is to determine the vertical distribution of stars with respect to Galactic latitude and z-distance in comparison with the model simulation between intermediate population to the 'thick disk' component of scale height of a few kpc. Comparison of the preliminary results between observed and model simulation for 3 of the S fields shows good agreement both in V-mag and B- V color distributions. A bimodal distribution in B- V at high galactic latitude seems to be represented by a halo and 'thick disk' dwarf in the blue and by a normal disk dwarf population in the red.
805
- SAHNI V.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.19-21
- 1996
- 원문 바로보기
We apply topological measures of clustering such as percolation and genus curves (PC & GC) and shape statistics to a set of scale free N-body simulations of large scale structure. Both genus and percolation curves evolve with time reflecting growth of non-Gaussianity in the N-body density field. The amplitude of the genus curve decreases with epoch due to non-linear mode coupling, the decrease being more noticeable for spectra with small scale power. Plotted against the filling factor GC shows very little evolution - a surprising result, since the percolation curve shows significant evolution for the same data. Our results indicate that both PC and GC could be used to discriminate between rival models of structure formation and the analysis of CMB maps. Using shape sensitive statistics we find that there is a strong tendency for objects in our simulations to be filament-like, the degree of filamentarity increasing with epoch.
806
- CANNON RUSSELL
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.367-370
- 1996
- 원문 바로보기
Construction of the 'Two-degree Field' (2dF) instrument on the Anglo-Australian Telescope (AAT) is now virtually complete and commissioning is well underway. The key components are described. Several recent milestones are reported, including the first scientific results. Future prospects and plans are discussed.
807
- REY Soo-JONG
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.11-14
- 1996
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Super-inflation driven by dilaton/moduli kinetic energy is naturally realized in compactified string theory. Discussed are selected topics of recent development in string inflationary cosmology: kinematics of super-inflation, graceful exit triggered by quantum back-reaction, and classical and quantum power spectra of density and metric perturbations.
808
- XU ZHENTAO
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.441-442
- 1996
- 원문 바로보기
809
- KWON SUK MINN
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.197-198
- 1996
- 원문 바로보기
We have carried out <TEX>$^{13}CO$</TEX> J = 1 <TEX>$\to$</TEX> 0 line observations with spatial resolution of 2' toward 17 small globules selected from the catalogue of Clemens & Barvainis (1988) with a selection criterion of [b] <TEX>$\ge$</TEX> 15 degrees using the Nagoya 4-m radio telescope. Overall characteristics and physical parameters are presented and discussed by examining the <TEX>$^{13}CO$</TEX> integrated intensity map for each of the globules.
810
- TIERSCH H.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.59-60
- 1996
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