Swan bands in bright comet 1995 Q1

The image shows the spectrum was obtained by Alain Smette (Kapteyn Astronomical Institute, Groningen, The Netherlands) with the EMMI instrument at the ESO 3.5-metre New Technology Telescope. The spectral coverage was from about 4900 Angstrom (left) to 6200 Angstrom (right) in the green-yellow region. During the 60 second exposure, the spectrograph slit was oriented along the main tail at position angle ~ 145 degrees. It is easy to see three main band systems of the C2 molecule, known as the Swan bands, with band heads at 5165, 5635 and 6192 Angstroms, respectively. They are seen in most comets that approach the Sun and are named after the English pioneer spectroscopist William Swan (1818 - 1894), who first observed these emissions in hydrocarbons

Mynd/Myndskeið:

ESO

Um myndina

Auðkenni:eso9515a
Tegund:Athuganir
Útgáfudagur:21. ágúst 1995
Tengdar fréttatilkynningar:eso9515
Stærð:415 x 399 px

Um fyrirbærið

Nafn:Comet 1995 Q1, Spectrum
Tegund:Solar System : Interplanetary Body : Comet
Flokkur:Solar System

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Litir og síur

TíðnisviðSjónauki
SýnilegtNew Technology Telescope
EMMI

 

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