File:First extra-galactic SiO maser (eso9618b).tiff

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Original file ‎(938 × 694 pixels, file size: 39 KB, MIME type: image/tiff)

Captions

Captions

This is a small part of the microwave spectrum of the maser star IRAS 04553-6825 in the Large Magellanic Cloud (LMC), a satellite galaxy to the Milky Way.

Summary

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Description
English: This is a small part of the microwave spectrum of the maser star IRAS 04553-6825 in the Large Magellanic Cloud (LMC), a satellite galaxy to the Milky Way.The region shown is centered at a frequency of about 86 GHz (wavelength about 3 mm), where SiO molecules in the atmosphere of this very large star produce a strong emission by the maser effect.The abscissa shows the velocity, as indicated by the Doppler shift of the SiO emission; the ordinate shows the relative intensity. The line at the centre has a measured velocity of about 275 km/sec, very near the mean velocity of the LMC. There is therefore no doubt that this star is located in the LMC.The observation was made with a new state-of-art millimetric receiver at the 15-metre Swedish-ESO Submillimetre Telescope (SEST) at the La Silla Observatory. The signal represents 26 hours of observation.
Date 6 March 1996 (upload date)
Source
This media was produced by the European Southern Observatory (ESO), under the identifier eso9618b

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Author ESO
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current00:30, 21 June 2024Thumbnail for version as of 00:30, 21 June 2024938 × 694 (39 KB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of https://www.eso.org/public/archives/images/original/eso9618b.tif via Commons:Spacemedia

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