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HD 77326


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Interstellar and intergalactic gas towards SN 1993J in M 81: A study of optical and 21 CM spectra
We present a study of the interstellar and intergalactic clouds locatedin the direction of the recent supernova 1993J in M81 based on theanalysis of optical and 21 cm spectra obtained during the first nightsafter its discovery. The optical spectra were taken at high spectralresolution (FWHM 4 to 6 km/s) using the 4.2 m William Herschel Telescope(La Palma, Spain), covering the resonance lines of CN, Ca II, Ca I,CH(+), CH, Na I, Li I and K I. We also observed in Ca II a sample offoreground Galactic stars in the field of the supernova. The 21 cmspectra were taken with the 100 m Effelsberg Radiotelescope (beam FWHMapproximately equals 9 min) at the position of SN 1993J and in 6positions around the supernova, at 10 min separation.

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观测天体数据

星座:大熊座
右阿森松:09h05m49.17s
赤纬:+68°06'06.7"
视星:8.5
距离:250.627 天文距离
右阿森松适当运动:-5.8
赤纬适当运动:9.1
B-T magnitude:8.553
V-T magnitude:8.505

目录:
适当名称   (Edit)
HD 1989HD 77326
TYCHO-2 2000TYC 4376-454-1
USNO-A2.0USNO-A2 1575-02938941
HIPHIP 44645

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