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1968년 ~ 2024년까지 1,211 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 : 1,211건 (DB Construction : 1,211 Articles)
총 게시글 1,211건
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791
- SUNG HWANKYUNG
- Journal of the Korean astronomical society = 천문학회지
- 29, n.2
- pp.269-278
- 1996
- 원문 바로보기
We present the color-magnitude diagrams (CMD) of more than 24,000 stars in the field of an intermediate age open cluster M11, based on wide field CCD imaging. The morphology of the CMDs varies strikingly as the distance from the center of the cluster increases. From the surface number density analysis, we confirm the mass segregation effect in this cluster: the bright, massive stars are centrally more concetrated than the faint, low mass stars. The slope of the field-corrected surface density with respect to magnitude progressively increases as the radius increases, up to r = 5'. Most of the field stars in or near the cluster main sequence band and in the bright part of the red stars in the CMDs appear to be nearly at the same distance as M11, and they are considered to be the major component of disk stars in the Sagittarius-Carina arm.
792
- SASAKI MINORU
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.85-86
- 1996
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The imaging spectroscopic observations of the Magellanic irregular galaxy NGC 4449 were made to show the detailed kinematic structure of the galaxy. Many filamentary structures and Several bubble-like structures are recognized in a 3D data cube of H<TEX>$\alpha$</TEX> emission line. Velocity field shows the kpc-scale mosaic structure and counter- rotation of ionized gas.
793
- KIM EUNHVEUK
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.81-82
- 1996
- 원문 바로보기
794
- HUNSTEAD RICHARD W.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.35-38
- 1996
- 원문 바로보기
Much of our knowledge about the formation and evolution of high-redshift galaxies has come from studying the absorption signatures they impress on the spectra of background QSOs. The damped Lyman <TEX>$\alpha$</TEX> (DLA) systems, in particular, have proved to be valuable probes of the metallicity and dust at redshifts z <TEX>$\~$</TEX>2-3 in what are the likely progenitors of galaxies like our own. At z <TEX>$\~$</TEX> 2 we find that the typical metallicity of the universe was 1/15 solar. In addition, we find clear evidence for the existence of trace amounts of interstellar dust in DLA galaxies and show that this is consistent with recent high resolution spectra of DLAs with the Keck telescope, despite claims to the contrary.
795
- HESSER J. E.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.111-118
- 1996
- 원문 바로보기
We review observational evidence bearing on the formation of a prototypical large spiral galaxy, the Milky Way. New ground- and space-based studies of globular star clusters and dwarf spheroidal galaxies provide a wealth of information to constrain theories of galaxy formation. It appears likely that the Milky Way formed by an combination of rapid, dissipative collapse and mergers, but the relative contributions of these two mechanisms remain controversial. New evidence, however, indicates that initial star and star cluster formation occurred simultaneously over a volume that presently extends to twice the distance of the Magellanic Clouds.
796
- WEE SUN-OK
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.145-146
- 1996
- 원문 바로보기
We have estimated a metal abundance of [Fe/H]= -0.04 <TEX>$\pm$</TEX> 0.05 dex, a reddening of E(B- V)= 0.28 mag, an age of 1.1 <TEX>$\pm$</TEX> 0.1 Gyr, and a distance of 2.5 <TEX>$\pm$</TEX> 0.2 kpc for NGC 1245 using the Washington filter system.
797
- MINN Y. K.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.189-191
- 1996
- 원문 바로보기
We have made observations of the dark cloud, B5 in the transitions of <TEX>$H_2CO$</TEX>, J = <TEX>$1_{10} {\leftarrow} 1_{11}$</TEX>, and <TEX>$2_{12} {\to} 1_{11}$</TEX>. We compared the <TEX>$H_2CO$</TEX> result with the observational results of CO and with the visual extinction. There exists an overall correspondence of molecules and extinction. However, a detailed agreement is lacking. We discussed the kinematics and the spatial relationship of molecules and extinction in this cloud.
798
- ISOBE SYUZO
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.365-366
- 1996
- 원문 바로보기
799
- LI XIAOMING
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.461-462
- 1996
- 원문 바로보기
800
- KIM KEE- TAE
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.177-178
- 1996
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