Observation by Graham Beamson: C2 Isotope Bands.

Uploaded by

Graham Beamson

Observer

Graham Beamson

Observed

2026 Sep 10 - 13:52

Uploaded

2026 Sep 10 - 14:03

Objects

UU-Aur
Spectrum

Equipment

SW Esprit 120
StarEx spectrograph
SW EQ6-R mount

Exposure

C2 Isotope Bands

Location

Cheshire UK

Target name

UU Aur and Y CvN

Title

C2 Isotope Bands.

About this image

UU Aur and Y CvN are carbon stars which show the spectrum of the diatomic molecule C2. Shown here is the C2(1<-0) vibrational band with three components due to the three possible isotopic molecules: 12C12C, 12C13C and 13C13C. UU Aur does not show an absorption due to 13C13C because it has less C13 in its atmosphere than does Y CvN.

Files associated with this observation

UU-Aur-&-Y-CVn-C2-isotope-bands.jpg (403.1 kB)

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