모달창 닫기
- 홈으로 이동
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 88/119
871
- XIAO K. C.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.413-414
- 1996
- 원문 바로보기
A 230 GHz SIS tunnel junction receiver has been being developed for radio astronomy in Nagoya University. In this heterodyne receiver, we use a <TEX>$\~$</TEX>1/3 reduced hight rectangular waveguide SIS mixer with two tuning elements as front end. The mixer block with SIS junction was cooled to 4K with a closed cycle He-gas refrigerator. So far, a double sideband receiver noise temperature lower than l00K in 222-237 GHz is obtained. The receiver exhibits a best DSB noise temperature of 69K at 236 GHz as well as 228 GHz.
872
- 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.
873
- CHOE SEUNG-URN
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.445-449
- 1996
- 원문 바로보기
We introduce the National Science Curriculum issued by the Education Ministry in Korea. Astronomy should be given and taught as compulsory courses in Nature of elementary school, Science of middle school, General Science of high school, and as elective courses in Earth Science I, II. Astronomy concepts have been designed in sprial pattern. College levels of astronomy have been given as majoring in astronomy course, cultivating one for earth science pre-teacher students and cultural subjects for non-major students
874
- SASAKI MINORU
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.85-86
- 1996
- 원문 바로보기
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.
875
- LI XIAOMING
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.461-462
- 1996
- 원문 바로보기
876
- KIM EUNHVEUK
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.81-82
- 1996
- 원문 바로보기
877
- ITOH NOBUNARI
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.379-380
- 1996
- 원문 바로보기
We have constructed a near-infrared imaging camera which is attached to the prime focus of 105cm Schmidt telescope at Kiso Observatory. The camera is equipped with a 1040<TEX>$\times$</TEX>1040 PtSi CSD array developed by Mitsubishi Electric Co. The combination of Kiso Schmidt and the array gives a wide field of view of 18.4'<TEX>$\times$</TEX>18.4' with a reasonable spatial resolution of 1.06' /pixel. The system performances of the camera have been evaluated through laboratory and observational tests. Low noise, good cosmetics(no defect pixels), and good stability of the camera system show an excellent performance for astronomical use.
878
- 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.
879
- ZHOU WENGE
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.403-404
- 1996
- 원문 바로보기
This paper describes a plan of a new IR phace-shfting interferometric system for testing astronomical aspheric mirror which has big departure from the best fit reference sphere during fine grinding. In this experimental system, some new technology will be adopted. The accuracy of system can reach <TEX>$\lambda$</TEX>/40(<TEX>$\lambda$</TEX>=10.6<TEX>${\mu}m$</TEX>)
880
- SONG GUO-XUAN
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.165-166
- 1996
- 원문 바로보기
A bottom-up model for the formation of GMCs is described, where the observed GMCs are the aggregates of less massive clouds. The aggregates are getting more and more massive in the process of consecutive collision between clouds.