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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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Observation and Astrometry data

Constellation:おおぐま座
Right ascension:09h05m49.17s
Declination:+68°06'06.7"
Apparent magnitude:8.5
Distance:250.627 parsecs
Proper motion RA:-5.8
Proper motion Dec:9.1
B-T magnitude:8.553
V-T magnitude:8.505

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 77326
TYCHO-2 2000TYC 4376-454-1
USNO-A2.0USNO-A2 1575-02938941
HIPHIP 44645

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