모달창 닫기
- 홈으로 이동
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
페이지 93/122
921
- KIM T.-S.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.39-40
- 1996
- 원문 바로보기
Using the Keck 10 m telescope data with the HIRES spectrograph, we analyzed the evolution of Lyman<TEX>$\alpha$</TEX> forest clouds at z > 2 down to the HI column density <TEX>$10^{12.8}cm^{-2}$</TEX>. The number density per unit column density does not change with redshifts at lower HI cloumn density (<TEX>$N_{HI} < 10^{14}cm^{-2}$</TEX>), while the forest clouds at higher column density disappear rapidly. The cutoff b value, the thermal temperature indicator, increases as redshift decreases. The correlation strength seems to be stronger as redshift decreases.
922
- YANG SUNG-CHUL
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.141-142
- 1996
- 원문 바로보기
923
- TSIOPA O. A.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.215-216
- 1996
- 원문 바로보기
The wind-formed features observed in the early SNe spectra type II and Ia give an evidence of the existence of an ellipsoidal shell formed by the stellar wind prior to the explosion. Such non-spherical shell can occur not only at scales of parsec (the case of SN 1987 A progenitor), but at the scales of 1000 times less. Such shells can be the result of the radial pulsation. The prolate multi-shell structures are interpreted as a result of a pulsation processes with recurrent wind ejections with velocity increasing.
924
- YANAGISAWA KENSHl
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.75-76
- 1996
- 원문 바로보기
We have started multi-color imaging program of nearby galaxies since last year and present preliminary result here. We selected 12 nearby galaxies classfied from E to Sab type and observed in BVRIJHK' bands. Photomtric parameters such as isophotal diameter, axial ratio, isophotal magnitude were measured and observed colors were compared with theoritical model. We find a standard evolution model agrees well with observed results.
925
- LEE Y.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.173-174
- 1996
- 원문 바로보기
We have mapped <TEX>$17 deg^2$</TEX> region toward Galactic anticenter in <TEX>$^{12}CO$</TEX> J = 1 - 0 using the 3 mm SIS receiver on the 14 m telescope at Taeduk Radio Astronomy Observatory (TRAO). The region mapped in this paper is the first target of the Galactic AntiCenter CO Survey Project (GACCOS) and was selected comparing with IRAS Sky Survey Atlas (ISSA) images at 100<TEX>${\mu}m$</TEX>. Molecular emission of the target area is found to be very extended and is well matching with the FIR emission boundary. There are several pieces of clouds, and as some of spectra show several peaks, there seem to be several clouds overlapped in some directions. The Velocity of Local Standard of Rest (<TEX>$V_{LSR}$</TEX>) of the CO emission of the mapped region ranges from -20 to +10 km/s. It is also found that the two cloudlets located around I = <TEX>$180^{\circ}$</TEX> have <TEX>$V_{LSR}$</TEX> = -20 km/s, which is very abnormal. The peak antenna temperature of 13 K arises near the H II Region S241.
926
- IYE MASANORI
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.371-374
- 1996
- 원문 바로보기
An updated project status review of the Japan 8m telescope, Subaru, scheduled for its first light in the second quater of 1998 atop Mauna Kea is given.
927
- CHO YOUNG JUN
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.79-80
- 1996
- 원문 바로보기
We performed CCD surface photometry in B,V,R and I filters for three southern spiral galaxies:ESO598-G009,NGC1515 and NGC7456. Isophotal map, luminosity profile, ellipticity profile and position angle profile were obtained for these galaxies using SPIRAL package. The results show that one of the galaxies, ESO598-G009 has relatively large bulge component and changes in position angle due to spiral arms. The NGC7456 has very small bulges; and the isophotal map of the NGC1515 shows that it is a typical spiral galaxy with bar.
928
- MATSUHARA H.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.171-172
- 1996
- 원문 바로보기
We present the results of an rocket-borne observation of far-infrared [CII] line at 157.7 <TEX>${\mu}m$</TEX> from the diffuse inter-stellar medium in the Ursa Major. We also introduce a part of results on the [CII] emission recently obtained by the IRTS, a liquid-helium cooled 15cm telescope onboard the Space Flyer Unit. From the rocket-borne observation we obtained the cooling rate of the diffuse HI gas due to the [CII] line emission, which is <TEX>$1.3{\pm}0.2 {\times} 10^{-26}$</TEX> <TEX>$ergss^{-1} H^{-1}_{atom}$</TEX>. We also observed appreciable [CII] emission from the molecular clouds, with average CII/CO intensity ratio of 420. The IRTS observation provided the [CII] line emission distribution over large area of the sky along great circles crossing the Galactic plane at I = <TEX>$50^{\circ}$</TEX> and I = <TEX>$230^{\circ}$</TEX>. We found two components in their intensity distributions, one concentrates on the Galactic plane and the another extends over at least <TEX>$20^{\circ}$</TEX> in Galactic latitude. We ascribe one component to the emission from the Galactic disk, and the another one to the emission from the local interstellar gas. The [CII] cooling rate of the latter component is <TEX>$5.6 {\pm} 2.2 {\times}10$</TEX>.
929
- KURTANIDZE OMAR M.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.129-131
- 1996
- 원문 바로보기
The results on the deep low dispersion (1250 <TEX>${\AA}$</TEX>/mm at <TEX>$H_r</TEX>, <TEX>$30^{\circ}$</TEX> < I < <TEX>$165^{\circ}$</TEX>, <TEX>$195^{\circ}$</TEX> < I < <TEX>$210^{\circ}$</TEX>, [b] < <TEX>$5^{\circ}$</TEX>; 7000<TEX>${\AA}$</TEX>/mm at A band, <TEX>$50^{\circ}$</TEX> < I < <TEX>$115^{\circ}$</TEX>, b=<TEX>$0^{\circ}$</TEX>, b=<TEX>${\pm}3.5^{\circ}$</TEX>) spectral surveys of the MILKY WAY are presented. More than 2250 carbon stars were identified among them 1440 new ones. The C/M5+ ratio increases from 0.02 to 0.3 when longitude varies from <TEX>$30^{\circ}$</TEX> to <TEX>$210^{\circ}$</TEX>. On the basis of A GENERAL CATALOG OF GALACTIC COOL CARBON STARS the surface distribution of carbon stars has been studied.
930
- GRIV EVGENY
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.355-355
- 1996
- 원문 바로보기