• 제목/요약/키워드: Spectrograph

검색결과 370건 처리시간 0.023초

NST/FISS Observations of Ellerman bombs and Surges

  • Yang, Heesu;Chae, Jongchul
    • 천문학회보
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    • 제38권2호
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    • pp.86.2-86.2
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    • 2013
  • Ellerman bombs(EBs) are emission features at the wings of the H alpha spectral line. They are believed to be a kind of a magnetic reconnection feature in the low chromosphere or near photosphere. It was previously reported that surges often occur in association with EBs. However, previous observations were restricted to imaging observation. Using Fast Imaging Solar Spectrograph installed in New Solar Telescope at Big Bear Solar Observatory, California, we observed 5 EBs and associated surges with high-spatial and high-spectral resolutions. In this presentation, we will show the results and discuss the physical properties.

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Detection of the fluorescent emission of hydrogen in the Taurus cloud

  • Dae-Hui Lee;In-Su Yuk;Jang-Hyeon Park;Ho Jin;Gwang-Il Seon;Uk-Won Nam;Won-Yong Han;Gyeong-Uk Min;Gwang-Seon Yu
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2004년도 한국우주과학회보 제13권1호
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    • pp.99-99
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    • 2004
  • We detected and analyzed molecular hydrogen fluorescence in the Taurus Cloud using the Far-ultraviolet Imaging Spectrograph (FIMS) on the STSAT-1 which was launched at SeP. 27 2003. FIMS is optimized for observing diffuse emission lines in the interstellar medium in the wavelength bands of 900-l150 and 1300-1700 angstrom. The Taurus region is a local molecular cloud which is good for studying molecular hydrogen fluorescence emissions. (omitted)

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KAISTSAT-4 : A Progress Report

  • Gyeong-Uk Min;Gwang-Seon Yu;Dae-Hui Lee;Jin-Geun Lee;Seung-Han O;In-Su Yuk;Gwang-Il Seon;Ho Jin;Jang-Hyeon Park
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2004년도 한국우주과학회보 제13권1호
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    • pp.51-51
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    • 2004
  • KAISTSAT-4 is to be launched in August 2003 into an orbit at 800 km altitude with the intended mission shared between astrophysics and space physics. The primary objective of its astrophysics mission is to provide spectral sky survey data of hot Galactic plasmas in the far-ultraviolet wavelength range. Far-Ultraviolet Imaging Spectrograph (FIMS) is sensitive to emission line fluxes in 900 - 1175 $\AA$ and 1335 - 1750 $\AA$. (omitted)

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과학 위성 1호의 주 탑재체 FIMS의 자료를 이용한 Aurora 영역의 spectrum 분석

  • 이지나;민경욱;류광선
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2004년도 한국우주과학회보 제13권1호
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    • pp.87-87
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    • 2004
  • FIMS(Far-Ultraviolet Imaging Spectrograph)는 2003년에 발사된 과학 위성 1호의 주탑재체이다. FIMS는 우주의 고온 플라즈마에서 방출되는 원적외선(900-1750$\AA$) 영역을 2$\AA$의 분해능을 갖고 관측하는 기기로써 관측 영역의 범위는 선택된 천문학 target과 지구 북반구의 aurora에서 지구 대기의 glow까지 포함하고 있다. 본 연구에서는 위성발사 후 과학 위성 1호의 FIMS로부터 관측되어 내려온 data 중에서 aurora 관측 자료를 이용하여 aurora의 특성 spectrum에 대하여 분석해 보고자 한다. (중략)

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Neutron Capture Elements in Meltal-poor Giants

  • Lee, Ye-Rim;Lee, Jae-Woo;Lee, Jeong-Deok;Lee, Ji-Na
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2008년도 한국우주과학회보 제17권2호
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    • pp.29.4-30
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    • 2008
  • We present elemental abundances of 12 red giants obtained with the BOAO 1.8m telescope and its fiber-fed echelle spectrograph. We perform the abundance analysis using the Kurucz model atmosphere and MOOG. Comparisons of our alpha- and neutron-capture elemental abundances and those in globular clusters and nearby dwarf galaxies will be presented.

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