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- The Korean Astronomical Society (The Korean Astronomical Society)
- 계간 (Quarterly)
- ISSN : 1225-4614 (ISSN : 1225-4614)
1225-4614
- DB구축현황 : 1,227건 (DB Construction : 1,227 Articles)
총 게시글 1,227건
페이지 95/123
941
- 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.
942
- 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.
943
- 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.
944
- 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>.
945
- 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.
946
- GRIV EVGENY
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.355-355
- 1996
- 원문 바로보기
947
- BROSCH NOAH
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.421-423
- 1996
- 원문 바로보기
948
- LEE GEUNHO
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.459-460
- 1996
- 원문 바로보기
949
- KANG HYESUNG
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.271-272
- 1996
- 원문 바로보기
Assuming that particles can be accelerated to high energies via diffusive shock acceleration process at the accretion shocks formed by the infalling flow toward the clusters of galaxies, we have calculated the expected spectrum of high-energy protons from the cosmological ensemble of the cluster accretion shocks. The model with Jokipii diffusion limit could explain the observed cosmic ray spectrum near <TEX>$10^{19}eV$</TEX> with reasonable parameters and models if about <TEX>$10^{-4}$</TEX> of the infalling kinetic energy can be injected into the intergalactic space as the high energy particles.
950
- TSAY WEAN-SHUN
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.409-410
- 1996
- 원문 바로보기
Speckle Interferometer equipped with an ITT intensified CCD have been used on the NCUO ( National Central University Observatory, Taiwan) 24-inch telescope for studying the orbits of bright binary systems selected from the Yale's Bright Star Catalogue. The high resolution and high sensitivity ITT intensified solid state video camera ( F4577 ) has external gain and gate control functions which will simplify the design of the speckle camera and allow us to do precise speckle photometry. The goal of this project is trying to study the bright binary systems with separations between the average size of seeing disk and the diffraction limit of the 24-inch telescope. Recently some observing data have been reduced and compared with the other teams' results. We are now improving the data reduction technology and trying to use real time observing mode on the monthly routine observation.